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EK-P500B-SV-002

December 1987

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Document:	VAXmate Service Guide May1987
Order Number:	EK-P500B-SV
Revision:	002
Pages:	242
Original Filename:	http://bitsavers.org/pdf/dec/vaxmate/EK-P500B-SV-002_VAXmate_Service_Guide_May1987.pdf

OCR Text

EK-P500B-SV-002

Service Guide

mate
Service Guide

~eptember 1986

May 1987

The information in this document is subject to change without notice
and should not be construed as a commitment by Digital Equipment
Corporation. Digital Equipment Corporation assumes no responsibility
for any errors that may appear in this document.
The software described in this document is furnished under a license
and may only be used or copied in accordance with the terms of such
license.
No responsibility is assumed for the use or reliability of software on
equipment that is not supplied by DIGITAL or its affiliated companies.
MS-DOS is a trademark of Microsoft Corporation.

The following are trademarks of Digital Equipment Corporation:

!amaamo'"
DEC
DEC mate
DECsystem-IO
DECSYSTEM-20
DECUS
DECwriter
Printed in U.S.A.

DIBOL
MASSBUS
PDP
P/OS
Professional
Rainbow
RSTS

RSX
UNIBUS
VAX
VMS
VT
Work Processor

Contents

Chapter 1

Overview

1.1 Introduction ......................................................................................... 1-1
1.2 VAXmate Workstation Components ........................................................ 1-3
1. 2.1 Monitor (Amber or Green Screen) .................................................. 1-6
1.2.2 I/O Board ...................................................................................... 1-6
1 .2.2.1 Communications Port .............................................................. 1-6
1.2.2.2 Printer Port ............................................................................ 1-6
1.2.3 CPU Board ..................................................................................... 1-8
1.2.4 Power Supply ................................................................................ 1-8
1. 2.5 RX33 1. 2 Mbyte Diskette Drive ..................................................... 1-8
1.2.6 Keyboard ....................................................................................... 1-9
1.2.7 Mouse ........................................................................................... 1-9
1.2.8 ThinWire Ethernet Cable ............................................................... 1-9
1.2.9 Options ......................................................................................... 1-9
1.2.9.1 2 Mbyte Memory ................................................................... 1-10
1.2.9.2 80287 Coprocessor .............................................................. 1-10
1.2.9.3 Expansion Box ...................................................................... 1-10
l. 2.9.4 Integral Modem Board for North America .............................. 1-1 0
1.2.9.5 LA75 Printer ........................................................................ 1-10
1.2.9.6 LN03 Plus Printer ................................................................. 1-11
1.2.10 DIGITAL ThinWire Ethernet Multiport Repeater (DEMPR) .......... 1-11
1.2.11 DIGITAL ThinWire Ethernet Station Adapter (DESTA) ................. 1-11
1. 3 Environmental and Electrical Description ............................................ 1-11

Chapter 2

Troubleshooting the VAXmate Workstation

2.1 Introduction ......................................................................................... 2-1
2.1.1 Diagnostic Tests ............................................................................. 2-1
2.1.1.1 Power-Up Test ........................................................................ 2-1

iii

11111 Contents

2.1.1.2 Extended Self-Test .................................................................. 2-2
2.1.1.3 Service Diagnostics ................................................................. 2-3
2.1.2 Light Emitting Diodes (LEOs) ........................................................ 2-3
2.2 Troubleshooting Procedure ................................................................... 2-5
2.3 Power-Up Test ...................................................................................... 2-6
2.3.1 System Halt ................................................................................. 2-15
2.3.2 CPU Board]umpers ..................................................................... 2-15
2.3.3 Error Numbers ............................................................................. 2-16
2.3.4 What To Do If the VAXmate Power Shuts Down ............................ 2-18
2.3.4.1 Thermal Shutdown/Overvoltage ............................................ 2-19
2.3.4.2 Overcurrent Shutdown .......................................................... 2-19
2.3.4.3 Blown Fuse or Short Circuit .................................................. 2-20
2.4 Extended Self-Test .............................................................................. 2-22
2.4.1 Exceptions to Testing Results ....................................................... 2-26
2.4.1.1 If the Customer Reports a Modem Problem ............................ 2-26
2.4.1.2 New Expansion Box .............................................................. 2-26
2.4.1.3 New Hard Disk in Expansion Box .......................................... 2-27
2.4 .1.4 LA75 Printing Erroneous Characters ...................................... 2-27
2.5 Service Diagnostics ............................................................. ,............... 2-27
2.5.1 System Errors Versus Diagnostic Errors ......................................... 2-28
2.5.2 Previously Detected Error ............................................................ 2-28
2.5.3 Main Diagnostic Menu ................................................................. 2-29
2.5.4 Selecting a Mode from Main Diagnostic Menu ............................... 2-33
2.5.5 System Test Mode ........................................................................ 2-33
2.5.5.1 Test Option Menu ................................................................. 2-34
2.5.5.2 System Test Requirements ..................................................... 2-37
2.5.5.3 System Test Execution ........................................................... 2-42
2.5.6 Individual Tests....................................................................... ·..... 2-44
2.5.7 New Diagnostic Installation ......................................................... 2-47
2.5.8 ~rror Log Mode ............................................................................ 2-48

Chapter 3 ThinWire Ethernet
3.1 Introduction ......................................................................................... 3-1
3.2 ThinWire Network Hardware Components ............................................. 3-1
3.2.1 ThinWire Network Terms ............................................................... 3-3
3.3 ThinWire Network Troubleshooting ....................................................... 3-6
3.4 Installation Guidelines .......................................................................... 3 -7
3.5 Installation Procedures ......................................................................... 3-9
3.5.1 ThinWire Network and VAXmate Server ......................................... 3-9
3.5.2 ThinWire Network with MicroVAX II Computer Server ................. 3-11

Contents

IIIII

3.5.3 Adding a Workstation to End of ThinWire Segment ....................... 3-13
3.5.4 Adding a VAXmate Workstation to Middle of an Existing
Segment ...................................................................................... 3-14
3.6 ThinWire Local Area Network (LAN) Example .................................... 3-15
3.7 ThinWire Network Map and Worksheet ............................................... 3-16

Chapter 4

Monitor Adjustments

4.1 Introduction ......................................................................................... 4-1
4.2 Brightness and Contrast Adjustment ...................................................... .4-2
4.3 Internal Monitor Adjustments ............................................................... .4-3
4.3.1 Horizontal Hold ............................................................................. 4-5
4.3.2 Cutoff............................................................................................ 4-6
4.3.3 Width Coil .................................................................................... 4-7
4.3.4 Height - 400 Line Mode ............................................................... .4-8
4.3.5 Centering Rings ............................................................................. 4-9
4.3.6 Rotation ....................................................................................... 4-11
4.3.7 Video Compensation .................................................................... 4-12
4.3.8 Height - 250 Line Mode ............................................................. .4-13
4.3.9 Focus .......................................................................................... 4-13

Chapter 5

FRU Replacement

5.1 Introduction ......................................................................................... 5-1
5.2 Before You Replace Any FRUs .............................................................. .5-3
5.3 Replacing FRUs ..................................................................................... 5-4
5.3.1 Turning Off Power and Unplugging External Cables ...................... .5-4
5.3.2 Separating the Expansion Box from the System Unit ...................... .5-5
5.3.3 Fuse Replacement .......................................................................... 5-6
5.3.4 Opening the System Unit Back Door ............................................. .5-7
5.3.5 System Unit Back Door Removal.. .................................................. .5-8
5.3.6 System Unit Cover Removal.. ....................................................... .5-11
5.3.7 2 Mbyte Memory Replacement ...................................................... 5-13
5.3.8 Modem Board Replacement .......................................................... 5-14
5.3.9 Math Coprocessor (80287) Replacement ..................................... .5-16
5.3.10 Speaker Replacement ................................................................. 5-18
5.3.11 Monitor Board RemovaL ............................................................ 5-20
5.3.12 CRT Handling Precautions ......................................................... 5-25
5.3.13 CRT Assembly Removal ............................................................. .5- 26
5.3.14 CRT Assembly Installation ......................................................... .5-31
5.3.15 Diskette Drive Removal .............................................................. 5-33
5.3 . 16 Diskette Drive Installation ......................................................... 5 -3 6

11111 Contents

5.3.17 CPU Board Removal .................................................................. .5-37
5.3.18 CPU Board Installation ............................................................... 5-42
5.3.19 Power LED Removal ................................................................... 5-44
5.3.20 Power LED Installation ............................................................... 5-45
5.3.21 IjO-Video Board Removal .......................................................... 5-46
5.3.22 IjO-Video Board Installation ..................................................... .5-49
5.3.23 Power Supply Board Replacement .............................................. .5-50
5.3.24 Expansion Box Cover Removal .................................................. .5-50
5.3.25 Hard Disk Drive Removal ........................................................... 5-52
5.3.26 Hard Disk Drive Removal with Fan Present.. ............................... 5-54
5.3.27 Hard Disk Drive BAse Plate Removal.. ........................................ .5.56
5.3.28 ReadjWrite Board Removal from the Hard Disk .......................... 5-57
5.3.29 ReadjWrite Board Installation ................................................... .5-59
5.3.30 Removing Skid Plate from New Hard Disk .................................. 5-61
5.3.31 Hard Disk Drive Installation ....................................................... 5 -6 2
5.3.32 Gaining Access to the Expansion Box Card Cage ....................... .5-64
5.3.33 Hard Disk Controller Replacement ............................................. 5-65
5.3.34 Option Replacement in the Expansion Box ................................ .5-66
5.3.35 Option Backplane Replacement .................................................. 5-67
5.3.36 Expansion Box Fan Replacement ................................................ 5-68
5.3.37 Expansion Box Power Connector and Bridge Replacement.. ......... 5-70
5.3.38 Expansion Box Power Regulator Replacement ............................ .5-72

Appendix A

Part Numbers ............................................... ............ A-1

Appendix B

Test Descriptions ..................................................... B-1

B.l Introduction ......................................................................................... B-1

Appendix C Error Numbers ........................................................ C-1
Tables
Table 1-1
Table 1-2
Table 2-1
Table 2-2
Table 4-1
Table 5-1

Electrical Description .............................................................. 1-12
Expansion Box Power Consumption (Maximum) ...................... 1-13
LED Function ............................................................................. 2-5
Symptoms ................................................................................ 2-11
Adjustments, Patterns, and Control Locations .............................. .4-3
FRUs and Removal/Replacement Procedures Paragraph
Numbers .................................................................................... 5-2

Contents

Table A-I
Table A-2
Table A-3
Table A-4
Table A-5
Table C-1
Table C-2
Table C-3
Table C-4

11111

VAXmate Workstation Recommended Spares ................................ A-2
Printer Components ................................................................... A-4
Base System ...............................................................................A-4
Networking Components ............................................................ A-5
Country Specific Components .....................................................A-6
ROM Diagnostics Error Numbers ............................................... C-1
Service Diagnostics Error Numbers ............................................ C-4
Install New Diagnostics Error Messages ................................... C- 21
System Error Messages ............................................................. C-22

Figures
Figure 1-1 VAXmate Workstation ............................................................... 1-2
Figure 1-2 VAXmate Workstation Block Diagram ........................................ 1-5
Figure 1-3 I/O-Video Baord Block Diagram ................................................ 1-7
Figure 2-1 LED Locations .......................................................................... 2-4
Figure 2-2 ROM Diagnostic Test Sequence (Sheet 1 of 3) .......................... 2-7
Figure 2-2 ROM Diagnostic Test Sequence (Sheet 2 of 3) .......................... 2-8
Figure 2-2 ROM Diagnostic Test Sequence (Sheet 3 of 3) .......................... 2-9
Figure 2-3 CPU BoardJumpers ................................................................ 2-16
Figure 2-4 Inserting the Diskette ............................................................. 2-23
Figure 2-5 Extended Self-Test Keys .......................................................... 2-23
Figure 2-6 Sample Configuration Display ................................................. 2-24
Figure 2-7 Restarting Service Diagnostics ................................................. 2-28
Figure 2-8 ROM Diagnostic Error ............................................................. 2-29
Figure 2-9 Main Diagnostic Menu ............................................................ 2-30
Figure 2-10 Service Diagnostics Mode Selection Keys ............................... 2-33
Figure 2-11 Test Option Menu ................................................................. 2-34
Figure 2-12 Prompt on Error ................................................................... 2-35
Figure 2-13 Loop on Error ....................................................................... 2-36
Figure 2-14 System Test Requirements ..................................................... 2-37
Figure 2-15 Assembling the Network Port Loopback Connector ................ 2-38
Figure 2-16 Disconnecting from the Network .......................................... 2-39
Figure 2-17 Disconnecting Mouse, Printer, and
Communications Cables ........................................................ 2-40
Figure 2-18 Installing Loopback Connectors ............................................ 2-41
Figure 2-19 System Test Execution .......................................................... 2-43
Figure 2-20 Individual Test Menu ............................................................ 2-45
Figure 2-21 Individual Test Execution ..................................................... 2-46
Figure 2-22 Sample Error Log .................................................................. 2-49

vii

IIIII Contents
Figure 3-1 Cable Components ................................................................... 3-2
Figure 3-2 Two Sample ThinWire Networks ............................................... 3-2
Figure 3-3 DIGITAL Faceplate .................................................................... 3-5
Figure 3-4 Correct and Incorrect ThinWire Segment Installation ................ 3-8
Figure 3-5 ThinWire Network with a VAXmate Server.. ............................ 3-10
Figure 3-6 ThinWire Network with MicroVAX II Server ............................ 3-11
Figure 3-7 Adding a VAXmate Workstation to End of Existing Segment ..... 3-13
Figure 3-8 Adding a VAXmate Workstation to Middle of an Existing
Segment ............................................................................... 3-14
Figure 3-9 Sample ThinWire LAN ............................................................ 3-15
Figure 4-1 Brightness and Contrast Controls .............................................. 4-2
Figure 4-2 Monitor Board Controls ............................................................. 4-4
Figure 4-3 Horizontal Hold ...................................................................... .4-5
Figure 4-4 Cutoff Adjustment ................................................................... .4-6
Figure 4-5 Width Measurement ................................................................. .4-7
Figure 4-6 Height Measurement ................................................................ .4-8
Figure 4-7 Centering Measurement ........................................................... .4-9
Figure 4-8 Yoke Centering Rings ............................................................ .4-1 0
Figure 4-9 Rotation Measurement ........................................................... .4-11
Figure 5 -1 Cable Locations ........................................................................ 5-4
Figure 5-2 Separating the Expansion Box from the System Unit .................. 5-5
Figure 5-3 Fuse Location .......................................................................... .5-6
Figure 5 -4 Opening the Back Door ............................................................ 5 -7
Figure 5-5 Removing the Back Door Screws ............................................... 5-8
Figure 5-6 Swinging the Door Up ............................................................. .5-9
Figure 5-7 Releasing the Links to Remove the Door ................................. 5-10
Figure 5-8 Removing the Cover ............................................................... 5-11
Figure 5-9 Board Locations ..................................................................... .5-12
Figure 5-10 Removing the 2 Mbyte Memory Board ................................... 5-13
Figure 5-11 Removing the Modem Board ................................................. 5-14
Figure 5-12 Modem Board]umper Locations ............................................ 5-15
Figure 5-13 Installing the 80287 Coprocessor.. ...................................... .5-16
Figure 5-14 Special Option Installed Label.. ........................................... .5-17
Figure 5-15 Removing the Speaker ......................................................... .5-19
Figure 5-16 Webbed Shield .................................................................... .5-20
Figure 5-17 Discharging the Anode ......................................................... 5-21
Figure 5-18 Removing the Anode Connector ........................................... .5-22
Figure 5-19 Monitor Board Screw ............................................................ 5-23
Figure 5-20 Unplugging Cables and Pushing the Anode Wire Through
the Shield ............................................................................ 5-24

viii

Contents

Figure 5-21
Figure 5-22
Figure 5-23
Figure 5-24
Figure 5-25
Figure 5-26
Figure 5-27
Figure 5-28
Figure 5-29
Figure 5-30
Figure 5-31
Figure 5-32
Figure 5-33
Figure 5-34
Figure 5-35
Figure 5-36
Figure 5-37
Figure 5-38
Figure 5-39
Figure 5-40
Figure 5-41
Figure 5-42
Figure 5-43
Figure 5-44
Figure 5-45
Figure 5-46
Figure 5-47
Figure 5-48
Figure 5-49
Figure 5-50
Figure 5-51
Figure 5-52
Figure 5-53
Figure 5-54
Figure 5-55
Figure 5-56

IIIII

Removing Connectors, Lug, Spring, and Braided Ground
Straps ................................................................................. 5-27
Disconnecting Power LED Cable .......................................... .5-28
Removing the Four Bezel Screws and the Top Screw ............. 5-29
Removing the CRT Assembly ................................................ .5-30
CRT Installation ................................................................... 5 -31
Removing Cables, Screws, and Heat Shield ........................... .5-33
Sliding Drive and Housing Out of the System Unit ............... .5-34
Sliding the Diskette Drive from Its Housing ......................... .5-35
Jumper FG Location (Diskette Drive) ................................... .5-37
Removing LED Cable and Plastic Dress Bezel ........................ 5-38
Power Supply Ground Wire ................................................. .5-39
Lifting Out Power Supply, 1j0-Video, and CPU Boards ......... .5-40
CPU Board Components and Jumpers .................................... 5-41
Removing the Power On LED Assembly ................................. 5-44
Replacing the Power LED Assembly ....................................... 5-45
Mounting Screws ................................................................. .5-46
Removing the I/O-Video Board Bezel.. ................................. .5-47
Removing the I/O-Video Board Shield ................................... 5-48
Removing the Expansion Box Cover ...................................... 5-51
Hard Disk Drive Cables and Screws ...................................... 5-53
Hard Disk Drive Removal with Fan Present .......................... .5-54
Removing Base Plate ............................................................ .5-56
ReadjWrite Board Screws and Washers ................................. .5-57
Removing Connectors 1 and 2 ............................................. .5-58
Removing Connector 3 ........................................................ .5-59
Jumper Setting for Drive Select ............................................ .5-60
Removing Skid Plate ............................................................. 5-61
Replacing Base Plate ............................................................ .5-62
Hard Disk Drive Installation ................................................ .5-63
Gaining Access to the Card Cage ......................................... .5-64
Removing Hard Disk Controller ........................................... .5-65
Removing Option Board ....................................................... .5-66
Removing Backplane ............................................................ .5-67
Removing Fan ...................................................................... .5-69
Removing Bridge and Power Connector ................................ .5-71
Power Regulator Board ......................................................... 5-73

Introduction

The VAXmate Service Guide is packaged in the VAXmate Maintenance Kit
and is designed to help you diagnose and repair the VAXmate Workstation.
This guide also describes the basic concepts of connecting the VAXmate to a
network, and troubleshooting a part of the VAXmate network.
WARNING
The procedures in this guide are for DIGITAL service technicians
only.

By using this guide, along with the other items in the Maintenance Kit, you
can isolate problems to the field replaceable unit (FRU).

/-1

11111

Introduction

Make sure your Maintenance Kit contains these items.
LOOPBACK CONNECTORS AND TERMINATORS

~
PRINTER

MOUSE

TWO 50-OHM TERMINATORS

DISKETTES

SERVICE DIAGNOSTICS
SERVICE GUIDE AND 3-RING BINDER

l'liXmate

1111111

LJ-0896

Maintenance Kit Items
/-2

Introduction

11111

The part numbers for the VAXmate Maintenance Kit items are as follows.
Description of Item

Part/Kit No.

VAXmate Maintenance Kit

00-Z6002-M7

Communications loop back connector

12-15536-06

Printer loopback connector

12-25083-01

Mouse loopback connector

12-25628-01

T-connector

12-25534-01

BNC terminator (50-ohm) (two)

12-25535-01

Formatted high density diskette (RX33)

BN-HU11A-BK

Formatted Low Density Diskette (RX3 1)

BL-N402A-BK

VAXmate Service Diagnostic diskette

BN-HD93x-Y7

VAXmate Service Guide

EK-P500B-SV

DEPCA Service Diagnostic diskette'

Bl-KL23x¥H

DEPCA Service Guide'

EK-DEPCA-SV

DECNA loop back connector'

12-22196-01

In addition to the Maintenance Kit you may also need these items, depending
on the type of repair. Ask your branch to order them for you.
Description of Item

Part No.

Type of Repair

Ohmmeter (times 1 scale)

N/A

Network testing

Anode discharge tool

29-24717

CRT or monitor board
replacement

Metric tape measure

29-25342

Video alignment

This guide does not help you diagnose problems caused by options purchased
from vendors other than DIGITAL.

• These items are for servicing Digital's network adapter (DEPCA) for IBM personal
computer.

1-3

IIIII Introduction
The chapters and appendices in this guide are as follows.
Chapter 1, Overview, describes the VAXmate computer.
Chapter 2, Troubleshooting the VAXmate Workstation, describes the testing
procedure and how to isolate problems to the failing field replaceable unit
(FRU).
Chapter 3, ThinWire Ethernet, describes ThinWire Ethernet terms, gives
installation examples, and gives procedures for troubleshooting part of the
VAXmate ThinWire network.
Chapter 4, Monitor Adjustments, describes how to adjust the screen display
after replacing of the CRT and/or the monitor board.
Chapter 5, FRU Replacement describes how to remove faulty FRUs and
replace them with new FRUs.
Appendix A, Part Numbers lists the recommended spares for the VAXmate
workstation. It also lists networking and printer components, and order
numbers.
Appendix B, Test Descriptions, describes the tests in the Service Diagnostics.
Use this as a reference to Chapters 2, 3, and 4.
Appendix C, Error Numbers lists all error numbers and possible messages that
can occur through diagnostic testing. Also listed with the error numbers are
the corresponding FRUs (Field Replaceable Units).
For more information on the VAXmate computer and information about
networking, refer to the documents in Table 1-1.

/-4

Introduction
Table 1-1

IIIII

Related Documents

Document

Part Number
VAXmate Workstation

VAXmate System Handbook
VAXmate System Administrator's Guide, including:
-VAXmate User's Guide, Volume 1 and 2
VAXmate Technical Description Manual
VAXmate Technical Reference Manual, Volume 1 and 2
(programming reference manuals and binders)
VAXmate Illustrated Parts Breakdown Manual

AA-]C47A-TH
QLA93-GZ
EK-PCSOO-TD
Q6ZCS-GZ
EK-PCSOO-IP

Options
VAXmate Expansion Box Installation Guide (Card)
VAXmate Expansion Box Internal Option Installation Guide (Card)
VAXmate Expansion Box Installation Guide and Owner's Manual
VAXmate Integral Modem User's Guide
PCSOX-MA Modem Installation Guide
PCSOX-AA Memory Installation Guide
80287 Coprocessor Installation Guide
VAXmate PCSOX-MA Integral Modem User's Guide
Installing and Using the LA7S Companion Printer

EK-RCD31-IN
EK-BASOO-IN
EK-RCD 3 I-OM
EK-PSOXM-UG
EK-PSOXM-IN
EK-P50XA-IN
EK-FP287 -IN
EK-P50XM-UG
EK-OLA7S-UG

Networks
DECconnect System Requirements Evaluation Workbook
DECconnect System Planning and Configuration Guide
DECconnect System Installation and Verification Guide
DESTA Installation Card
DESTA Technical Description
ThinWire Ethernet Cable Connector Installation Guide (Card)
Ethernet Installation Guide, Volume 1

EK-DECSY-EG
EK-DECSY-CG
EK-DECSY-VG
EK-DESTA-IN
EK-DESTA-TM
EK-CABLE-IN
EK-ETHER-IN

Vendor Equipment Services
YES Mini Reference Guide, Volume 1
YES Mini Reference Guide, Volume 2
YES Mini Reference Guide, Volume 3
YES Mini Reference Guide, Volume 4
YES Mini Reference Guide, Volume 5

EK-MINI 1-RG
EK-MINI2-RG
EK-MINI3-RG
EK-MINI4-RG
EK-MINI5-RG

1-5

Chapter 1
Overview

1.1 Introduction
The VAXmate Workstation (Figure 1-1) is a desktop computer. It can be used
as a standalone personal computer or, more often, as a node on a network to a
VAX, MicroVAX II computer, or even to another VAXmate that has network
server software. The VAXmate computer is compatible with industry-standardpersonal computers and runs both industry-standard- applications and applications designed by DIGITAL.
As a node on the Personal Computing System Architecture (PCSA) network, the
VAXmate computer system is the user's interface into the applications and
services that the PCSA family of products provides. As part of a network, the
VAXmate computer communicates with other computers on the network, as
well as shares the various resources and services offered by DIGITAL computers and servers.

- The computer industry recognizes two open architectures as industry standards. The
first is the IBM-pe-AT bus structure. The second is the MicroSoft disk operating
system (MS-DOS). The term industry-standard refers to compatibility with these
architectures. To support MS-DOS requires a defined set of ROM-BIOS (basic I/O
system) services, which the VAXmate workstation offers.

1-1

\ \ \ \ \ Overview

DISKETTE DRIVE

SYSTEM UNIT

EXPANSION BOX

Figure 1-1

1-2

VAXmate Workstation

Overview

IIIII

1.2 VAXmate Workstation Components
The VAXmate workstation consists of the following items. An asterisk (') indicates that the component is a field replaceable unit (FRU).
System Unit including:
• Power indicator light'
• Monitor (amber or green screen),
• Monitor Board'
• I/O-Video Board' containing:
Video controller
Diskette controller
Communications port
Printer port
Port for integral modem option
DIGITAL ThinWire Ethernet interface
• CPU Board' containing:
Memory (1 Mbyte)
80286 processor
Keyboard port
Mouse port
Socket for 80287 coprocessor option
Connector for memory option board
• Power Supply (120 V or 240 V)'
• Diskette drive (1.2 Mbytes),
Keyboard (LK2 50)'
Mouse'
Speaker'
LAN (Local Area Network) assembly' (ThinWire Ethernet) including:
• ThinWire Ethernet Cable
• One T-connector
• One terminator (50-ohm)

• Indicates that the component is a field replaceable unit (FRU).

1-3

IIIII Overview
Options for the system unit include the following items.
• Integral modem board with 8-pin modular (telephone compatible)
connectors
• Memory (2 Mbyte memory board) ,
• Numeric processor extension - 80287 chip'
• Dot-matrix companion printer - LA75
• Laser printer - LNO 3 Plus
• Expansion box'
The Expansion Box option includes the following items.
• Power regulator'
• Lithium battery backup for event timer*
• Two option slots for industry-standard options'
(Each slot accepts options that require 9.5 watts/slot maximum, a CPU
clock frequency of 8 megacy1ces, and is compatible with the industrystandard 8-bit bus and 16-bit bus.)
• Hard disk drive"
• Hard disk controller'
Networking options include the following items.
• DIGITAL Ethernet Multiport Repeater (DEMPR)
• DIGITAL Ethernet Station Adapter (DESTA)
Figure 1-2 is a block diagram of the VAXmate workstation. If you need more
technical information, refer to the VAXmafe Technical Description Manual
(EK-PC500-TD) .

• Indicates that the component is a field replaceable unit (FRU).

1-4

Overview

IIIII

SPEAKER

KEYBOARD

~I--I-_ SERIAL PRINTER

1---1---1--_ SERIAL COMM

1--+-+-1--- TE LEPHONE

+_+_"

AC _ _

~------I EXPANSION BOX OPTION

--------,
HARD DISK CONTROLLER

I
I

II
II

SLOT
#2

BATTERY BACK-UP
FOR EVENT TIMER

I
I
I
I
I
II

--------------~--~
Figure 1-2

VAXmate Workstation Block Diagram
1-5

Overview

11111

1.2.1 Monitor (Amber or Green Screen)
The monitor isa 14 inch diagonal display cathode ray tube (CRT) and generates 800 X 250 or 640 X 400 raster. The CRT displays a video image of up to
16 shades of gray. Through use of a control signal from the video controller,
the CRT can switch to 250 scan or 400 scan operation.
The monitor can be tilted up or down to provide the user with a range of
viewing angles. While pressing the bar at the base of the screen, press inward
at the top or at the bottom of the monitor bezel.

1.2.2 I/O-Video Board
The I/O-video board accepts the 16-bit bus signals generated by the CPU
board. The I/O-video board provides all the non-optional I/O, peripheral interface, and video display control functions of the VAXmate workstation system.
Figure 1-3 shows a block diagram of the I/O-video board. The board contains:
• Video subsystem
• Serial communications port
• Serial printer port
• ThinWire Ethernet interface
• Connection for integral modem and
• Diskette controller logic.
1.2.2.1 Communications Port

This port, a 25-pin connector, is on the rear bezel of the VAXmate system
unit. This connector is functionally compatible with RS-232-C and electrically
compatible with RS-423, configured as DTE (Data Terminal Equipment). The
communications port has a DEC Std 52 compliant serial communications interface with modem control.
1.2.2.2 Printer Port

This port has a 9-pin connector, located on the rear bezel of the VAXmate
system unit. The serial printer port can communicate with an ASCII protocol
printer. The port supports two modem control lines.

J-6

..
.

V'-.

~.....

I\..

....

~....,

..
y

<
....

~
o

I-

III..

lit.

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a:

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rl
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....

....

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en \.
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II':'

NETWORK
INTERFACE

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I-

c:=

z
z

+==:J

DIRECT
DRIVE
MONITOR

-Httl

ThinWire
Ethernet
CONNECTION

H-A

PRINTER

-H~

ASYNCHRONOUS
COMMUNICATIONS
CONNECTION

.....

C.....

!j.l

VIDEO
DISPLAY
CONTROLLER

ASYNCHRONOUS
SERIAL
PRINTER PORT
INTERFACE

ASYNCHRONOUS
COMMUNICATIONS
PORT
INTERFACE

lii..

COMMON
LOGIC

V'.....-

I\..

...

DISKETTE
DRIVE
CONTROLLER

-H[}o[]l

8-BIT
OPTION
CONNECTOR

DISKETTE
DRIVE

OPTIONAL
DEVICE

~
LJ-1363

IIIII Overview
1.2.3 CPU Board
The CPU/Memory board has an 8 MHz, 80286 processor with its associated
logic (DMA control, interrupt control, bus control, event timer, command/
status registers, and so on). An optional 5.33 MHz 80287 coprocessor can be
added to enhance the CPU by providing fast processing of math functions on
floating point and other data types.
The memory part of the board has a one Mbyte dynamic memory with byte
parity. An optional DIGITAL two Ml?yte memory board can be added to provide
a total of three Mbytes of usable memory. By adding industry-standard expansion boards in the expansion box, the total memory can be extended to 15
Mbytes. In addition, the CPU board has a 32 byte Ethernet address ROM,
which stores the unique xx-byte node number.
The old CPU board (54-16847) and the new CPU board (54-17187) basically
function the same, but the new board solves the EGA/network conflict. Do not
install the new CPU board unless the mechanical parts in the PC500-UA
grounding kit are also installed. The PC500-UA kit includes the new CPU
board and all the necessary grounding hardware.
See Appendix D for a detailed block diagram of the CPU board.

1.2.4 Power Supply
The power supply delivers all dc power required by the VAXmate workstation.
The VAXmate workstation comes with either a 120 Vor 240 V ac power
supply. An appropriate power cord for each country is available.

1.2.5 RX33 1.2 Mbyte Diskette Drive
The RX33 is a 5 1/4 inch, double-sided, dual-speed, half-height, 96 tracks per
inch (tpi) diskette drive. It has full RX50 Single-sided, read/write compatibility and industry-standard 1.2 megabyte compatibility.

1-8

Overview 11111

1.2.6 Keyboard
The LK250 keyboard is compatible with DIGITAL and industry-standard computers when the appropriate cable is used. The keycap labeling is as follows.
• Black labels are for standard DIGITAL keyboard keys.
• Blue labels are for special functions with industry-standard applications.
• Gold labels are for special functions with DIGITAL's WPS-Plus word
processing software.
There are two different part numbers for the keyboard. (See Appendix A, Part
Numbers.) The industry-standard keyboard uses a different cable than the
DIGITAL keyboard.

1.2.7 Mouse
The three-button mouse is a pointing device that provides X-Y coordinate output data. It has a resolution of 0.127 mm (0.005 in) for use in controlling
various functions of the VAXmate workstation.

1.2.8 ThinWire Ethernet Cable
The ThinWire Ethernet is a second-generation cabling standard that provides
10 Mbits/second transfer rate performance and enables configuration of lowcost, high-bandwidth local area networks. Customers can connect their
VAXmate workstations with small sections of cable and simple connectors; no
tools are needed. ThinWire Ethernet can be used to link desktop computers,
such as VAXmate workstations to a MicroVAX II computer or any networking
devices.

1.2.9 Options
The following options are available.
2 Mbyte memory
80287 coprocessor
Expansion box
Hard disk drive and controller board
Integral modem board for North America
LA75 printer
LN03 PLUS printer

1-9

11111

Overview

1.2.9.1 Two-Mbyte Memory Board
This option board mounts in a connector on the back of the CPU board and
can be installed by the customer by simply opening the rear Qoor. The option
memory board has dynamic memory, memory control circuitry, and parity
generation/checking circuitry.

1.2.9.2 80287 Coprocessor
The coprocessor is a chip that plugs into the CPU board. It must not be
installed by the customer or the warranty is voided. Installation by Field Service is included in the list price (MLP) of this option. The coprocessor speeds
up arithmetic instructions for a variety of numeric data processing.

1.2.9.3 Expansion Box
The expansion box connects to the bottom of the system unit. The expansion
box contains the hard disk drive and hard disk drive controller. It also contains the expansion box power supply regulator, battery back-up for the event
timer and two slots for industry-standard hardware options. The RD31 has 20
Mbytes of storage on the drive; the RD32 has 40 Mbytes of storage.

1.2.9.4 Integral Modem Board for North America
The modem board is customer-installable and plugs into connectors on the
I/O-video board. The modem has two modular telephone line compatible connectors that protrude through the rear panel of the VAXmate workstation. The
connector uses an 8-pin, keyed modular housing for an RC 11 C jack (or CAll
jack in Canada).

1.2.9.5 LA75 Printer
The printer is a dot-matrix "companion" printer for the VAXmate workstation.
It is DIGITAL's replacement for the LA50 printer. The LA75 offers the ability
to insert single sheets of paper without removing the continuous form paper,
and a separate feed for envelope addressing.
The LA75 uses DIGITAL printer protocols, as well as industry-standard protocols, for text and bit map graphics. It is shipped with the same default settings as the VAXmate workstation. These settings are: 4800 baud rate, 8 data
bits no parity. The LA75 returns an LA50 ID upon interrogation by the cpu.

1-10

Overview

IIIII

The LA75 cable part number is BCI6E-xx. An adapter may be required for a
host computer other than the VAXmate workstation. See the printer
documentation.
1.2_9_6 LN03 Plus Printer
This letter-quality laser printer operates at 8 pages per minute. Like the LA75,
the LN03 uses DIGITAL printer protocols. With the addition of a plug-in ROM
cartridge, the LN03 provides industry-standard compatibility. The LN03 printer
uses a BC22D cable to connect to a VAXmate.

1.2.10 DIGITAL ThinWire Ethernet Multiport Repeater (DEMPR)
The DEMPR connects up to eight thin coaxial cable segments, each up to 185
meters long. Up to 29 workstations can be connected on each segment for a
maximum of 232 workstations.
The DEMPR can also stand alone to link desktop systems in several offices to a
resource-sharing network. The DEMPR can be mounted on a wall or table, and
is also rack-mountable.

1.2.11 DIGITAL ThinWire Ethernet Station Adapter (DESTA)
The DESTA is a compact Ethernet transceiver that adapts standard Ethernet
products for connection to ThinWire Ethernet cable. It has a 15-pin transceiver cable connector at one end to attach to the standard Ethernet devices,
and a BNC connector at the other end to connect to the ThinWire Ethernet
cable.

1.3 Environmental and Electrical Description
The VAXmate workstation is convection cooled, and therefore, generates no
noise in an office environment. The system package housing is constructed of
plastic with inner conductive coatings to provide EMCjRFI shielding. The
VAXmate workstation is designed and tested to meet DEC Std 102 requirements for a class A (computer room) environment. The VAXmate workstation
also complies with the following environmental and safety standards.

1-11

IIIII Overview
• DEC Std 103 - Electromagnetic Compatibility (EMC) Hardware Design
Requirements. The VAXmate workstation meets FCC class "A" Level,
which makes it unsuitable for home use.
• DEC Std 119 - Digital Product Safety
• DEC Std 122 - AC Power Line Standard
Table 1-1 lists the power consumption of the system unit.
Table 1-1

System Unit Power Consumption (Maximum Amps and Power)

Component

+5.1V

+12_1V

-12.0V

+28.0V

-9.0V

Watts

CPU board (max)

4.486
Amps

0.013
Amps

0.000
Amps

23.192

I/O-video board

3.100

0.060

0.039

0.000

0.200

18.806

Monitor board (max)

0.200

0.250

0.550

0.000

22.445

RX33
Start-up
(400 ms)

0.630

1.000

0.000

15.313

Read/write

0.550

0.600

0.000

10.065

2 Mbyte memory

0.600

0.000

3.060

Integral modem

0.750

0.040

0.030

0.000

4.669

LK250 (external)

0.220

0.000

1.122

Mouse (external)

0.250

0.000

1.275

TOTAL
steady-state
peak

10.156
10.236

0.963
1.363

0.332
0.332

0.550
0.550

0.200
0.200

84.633
89.881

The VAXmate workstation power supply and the expansion box power regulator provide a total of 28.5 watts of power to the expansion box card cage (9.5
watts per option slot). The hard disk controller occupies the top option slot
(when installed). A total of 19 watts is available for any industry-standard
options in the remaining two slots. Each option slot accepts options that use
an 8-bit and/or 16-bit industry-standard bus and a clock frequency of 8 Mhz.
Table 1-2 lists power consumption in the expansion box.

1-12

Overview 11111
Table 1-2

Expansion Box Power Consumption (Maximum)

Component

+5.1V

+12.1V

-12.0V

-5.0V

Fan

Watts

RD31 (max)
Start-up
(20 sec)

Amps
1.20

Amps
2.60

Amps
0.00

Amps

38.80

Operating:
idle

0.60

0.90

0.00

15.50

random seek

0.60

1.10

0.00

17.50

1.30

2.00

0.00

32.00

Operating:
idle

1.20

0.51

0.00

12.73

random seek

1.30

1.80

0.00

29.50

RCD31/32 controller

1.00

0.001

0.00

5.26

Option-1

1.30

0.10

9.54

Option-2

1.30

0.10

9.54

TOTAL
RCD31-EA, -EC
steady-state
peak

4.30
4.80

1.30
2.80

0.20
0.20

41.44
63.14

RCD31-FA, -FC
steady-state
peak

4.30
4.80

1.30
2.80

0.20
0.20

0.25
0.25

44.44
66.14

RCD32-FA, -FC
steady-state
peak

4.90
4.90

2.00
2.20

0.20
0.20

0.25
0.25

53.84
59.34

RD32 (max)
Startup
(20 sec)

CAUTION

Never install option boards that exceed the available expansion box
wattage. A single option or a combination of options that needs
more then 19 watts can damage the expansion box circuitry, blow a
fuse in the workstation, or damage the VAXmate workstation power
supply.

1-13

Chapter 2
Troubleshooting the
VAXmate Workstation

2.1 Introduction
This chapter describes how to diagnose problems in the VAXmate worksta
tion to the failing FRU. It describes the VAXmate diagnostic tests and how to
use them. It also describes the VAXmate light emitting diodes (LEDs), their
locations and functions.
This chapter does not describe how to troubleshoot the network. If you suspect a problem in the network, see Chapter 3, ThinWire Ethernet.

2.1.1 Diagnostic Tests
The VAXmate workstation has three diagnostic tests to help isolate problems.
The tests vary in level of testing.
1. Power-Up

2. Extended Self-Test

3. Service Diagnostics
2.1.1.1 Power-Up Test
This is the most basic of the three VAXmate diagnostic tests. It is stored in
the VAXmate firmware and is referred to as a ROM-based diagnostic. It performs a quick check of 80 percent of the VAXmate workstation, including
the CPU board, keyboard, I/O board, video subsystem, diskette drive, hard
disk controller and drives (if present), and any DIGITAL options that have
on-board diagnostics. Power-Up test also checks only the real mode memory
(768 Kbytes).

2-1

IIIII Troubleshooting the VAXmate Workstation
The Power-Up test starts automatically when the VAXmate workstation is
turned on and runs for about 30 seconds. When the test is complete the
system boots. If the Power-Up test finds a failure, an error number displays in
the middle of the screen, the LED on the failing FRU stays on (if that component has an LED), testing stops, and the system tries the boot procedure.
The Power-Up test does not test options that are not supported by DIGITAL
unless the vendor adds option ROMs containing a Power-Up test that conforms to the VAXmate standard. The Power-Up test does check, however, the
size of the non-DIGITAL memory and does initialize it.
2_1.1.2 Extended Self-Test
This is a more thorough test of the system than the Power-Up test. The
Extended Self-Test is also a ROM-based diagnostic. It performs the same
series of tests as the Power-Up test, as well as more extensive tests on the
various components. It checks real memory and protected memory, including
the 2 Mbyte memory option board, and the functioning of the 80287
coprocessor option. Extended Self-Test performs extensive internalloopback
tests on the printer, communications, and mouse connectors and performs
extensive event timer tests. No loopback connectors are required. A formatted high-density diskette must be in the drive and the drive must be locked,
otherwise error number 43 displays on the screen. The test does not write to
the diskette so any formatted high density diskette can be used; data is not
lost. Extended Self-Test also reads the hard disk (if present) and checks any
other DIGITAL options that have on-board diagnostics.
Extended Self-Test runs when you press the Ctrl/Alt/Home keys (after the
power-up test is complete). See Figure 2-5 for the location of these keys. It
takes between 3 to 5 minutes to run, depending on the number of options
installed in the VAXmate workstation. When the test completes the screen
displays a list of the components in the system's configuration. During this
time, a background process (invisible to the user) allows the host computer
to check the network connection. Pressing any key, after the configuration
list displays, begins the boot procedure and stops the background process.

2-2

Troubleshooting the VAXmate Workstation 11111

If the test finds a failure, a 2-digit error number displays in the middle of the
screen, testing stops, and the system's configuration displays.
NOTE

The configuration is displayed if the test passes or if the test finds
a failure.
ALWAYS run the Extended Self-Test when you install a new DIGITAL option or
when you install or remove the expansion box. Otherwise, the system configuration information (stored in memory) does not get updated. See Paragraph
2.4 to run the Extended Self-Test.

2.1.1.3 Service Diagnostics
These diagnostics thoroughly test the VAXmate workstation. These diagnostics
are stored on the VAXmate Service Diagnostics diskette, included in the Maintenance Kit. The Service Diagnostics diagnose the system, as well as some
networking functions. There are many different types of tests to select. It is
also possible to install new tests or update existing tests on the Service Diagnostic diskette.
Many of the tests are interactive - you are prompted to assist in the testing.
Status messages display as the testing progresses, to aid in the diagnostic
process.
Each test in the Service Diagnostics package takes between 1 and 25 minutes
to run, depending on user interaction. If the test finds a failure, a four-digit
error number displays at the bottom left of the screen.

2.1.2 Light Emitting Diodes (LEDs)
Figure 2-1 shows the locations of the VAXmate LEDs. Table 2-1 lists the function of each LED.

2-3

IIIII Troubleshooting the VAXmate Workstation
SYSTEM UNIT ITOP VIEW)

MODEM BOARD IRED)

D
DISKETTE DRIVE IRED)
KEYBOARD IRED)
SYSTEM UNIT POWER ON IGREEN)

1/0 BOARD IYELLOW)

CPU BOARD IRED)

EXPANSION BOX

1-:=======~14:.0~cm~::::::f.:::::::::~
15.5 in) - -_ _J

Figure 2-1 LED Locations

2-4

IIIII

Troubleshooting the VAXmate Workstation

Table 2-1 lists the function of each LED.
Table 2-1

LED Function

Location

Color

Function

System unit

Green

On when the VAXmate workstation power is on.

Keyboard

Red

The four red LEDs are on momentarily during keyboard reset and during the diagnostics.

CPU board

Red

On during the CPU board part of the diagnostic. The
LED stays on if there is a CPU board failure.

I/O board

Yellow

On during the I/O board part of the diagnostic. The
LED stays on if there is an I/O board failure.

Option memory board

Red

Off during testing and on if there is a parity error on
the board.

Option
modem board

Red

On during testing and stays on if there is a failure on
the board. Can also blink during failure.

Expansion box

Green

On when the system unit power switch is on.

Diskette drive

Red

On when drive is operating.

2.2 Troubleshooting Procedure
Troubleshoot the VAXmate workstation as follows.
l. Run the Power-Up test (Paragraph 2.3). See Appendix C for the error

codes.
2. Turn the system off, wait 15 seconds, and turn the system on. Then, run
the Extended Self-Test (Paragraph 2.4) if you have not found the
problem.
NOTE

You must always run the Extended Self-Test when a new option is
installed or when the expansion box is installed or replaced.
Running the Extended Self-Test updates the system configuration.
3. Run the Service Diagnostics (Paragraph 2.5), if you still have not found
the problem.
a.

Run the System Test to isolate the problem.

2-5

11111 Troubleshooting the VAXmate Workstation

b. Run the Individual Test(s) to confirm a problem area. Individual Test
descriptions are in Appendix B.
If you run the individual network tests and you have not found the
problem, see Chapter 3, ThinWire Ethernet.
c. If you replace the CPU, install the original Ethernet address ROM on
the new CPU board. If you replace either the CPU or IjO-video board,
run the system test to check the system.
d. If you replace an option, run the Individual Test for that option.

2.3 Power-Up Test
Run the Power-Up test as follows.
1. Turn off the system power and wait 15 seconds.

2. Turn on the system power.
See Figure 2-2 for a flowchart of the ROM diagnostic test sequence.
A successful test produces these results.
1. The system unit LED is on showing power to the VAXmate workstation. If
an expansion box is attached, its LED is also on.
2. A horizontal hollow bar displays and fills in as the test progresses.
3. The screen goes blank, then the top line flashes and blinks as the video
components are tested.
If a non-DIGITAL video option is present, the Power-Up test does not

perform the video test.
4. The LEDs for the CPU board, I/O board, and DIGITAL option boards are
on during their part of the test and shut off when the test for that board
completes.
S. The system speaker beeps once and the horizontal bar is completely filled in when the test is successful.
6. The system boots from either the diskette (if one is in the drive), the
hard disk (if one is installed and formatted), or the network (if one is
connected), in that order.

2-6

Troubleshooting the VAXmate Workstation 11111
TEST SEQUENCE-PROCESSOR BOARD

EXTENDED
SELF-TEST
CTRL/ALT/HOME
PROCESSOR SHUTDOWN

SOFT RESET
CTRL/ALT/DEL

HALT

ERROR

YES

OPTION TESTS

ERROR

LJ·1028

Figure 2-2

ROM Diagnostic Test Sequence (Sheet 1 of 3)

2-7

IIIII Troubleshooting the VAXmate Workstation
TEST SEQUENCE-I/O BOARD

ERROR

DISKETTE DRIVE
READ TEST
HIGH DENSITY
FORMATTED
DISKETTE NEEDED

Figure 2-2

2-8

ERROR
~------------~~

ROM Diagnostic Test Sequence (Sheet 2 of 3)

Troubleshooting the VAXmate Workstation

IIIII

TEST SEQUENCE-OPTIONS

1 __
L

2__-,

HARD DISK

---1---

~-...:E:.:R:..:R:.:O:.:R~--"

I--~DE;---,

ERROR

L---El~ODEM LED OFF I
laTHER DIGITAL _,
L-flf!lQ.NS _ _ _ -.J

ERROR

ERROR
SOFT
RESET

LJ·1030

Figure 2-2

ROM Diagnostic Test Sequence (Sheet 3 of 3)

2·9

IIIII Troubleshooting the VAXmate Workstation
If ALL of the previous results did not occur, do the following.

Symptom

Action

No video display.

See Table 2-2, Symptoms.

LEDs are not functioning
properly.

See Table 2-2, Symptoms.

System halts - CPU LED
stays on.

See Paragraph 2.3.1, System Halt. Also see
Table 2-2, Symptoms.

System halts - I/O LED
stays on.

See Paragraph 2.3.1, System Halt. Also see
Table 2-2, Symptoms.

Horizontal bar is not
displayed.

See Paragraph 2.3.2, CPU Board Jumpers.
Jumper WI on CPU board must be in. If removed, replace it. Also see Table 2-2, Symptoms.

Wrong characters on the
screen, or the display is not
correct.

The modem jumper is set to disable the
modem portion of the ROM diagnostics.
Enable the modem testing by setting the
jumper to pins 2 and 3. (See Figure 5-12).
Also read Paragraph 2.4 .1.1.

Horizontal bar is partially filled in. No numbers are displayed, and the system
doesn't try to boot.

See Paragraph 2.3.2, CPU Board Jumpers.
Jumper W2 on CPU board must be out. If
there is a jumper in this position, remove it.

Two-digit number displays.
System mayor may not boot.

See Paragraph 2.3.3, Error Numbers.

Power supply and CPU errors
occur.

The expansion box runs off of the CPU board.
The expansion box power regulator may be
the source of the problem. Remove the expansion box and run the Extended Self-Test.

EGA/network conflict

Install the PC500-UA CPU board and grounding kit.

2-10

Table 2-2 Symptoms
Indicator LEDs
System
Unit
CPU

I/O

Option Indicator LEDs
Expansion 2 Mbyte
Box
Memory

Probable Cause

Corrective Action

ac power cable

Plug in cable

Power switch

Make sure power is on.

Blown fuse

See Paragraph 2.3.4.3.

VAXmate workstation
power failure

See Paragraph 2.3.4.

Expansion box options.

Detach the expansion box from
the system unit and try to powerup again. If it passes, then reseat
each option. Continue with
troubleshooting procedures. Remove options if they are faulty.
Replace only DIGITAL supported
options. Inform customer of faulty
options that are not supported by
DIGITAL.

Modem

No Video Displayed on Screen
off

off

o~
~

f
.

~
~

~
$:I

*...'"c·
~

t;.J

........

::I

.....

t\J

Table 2-2 Symptoms (cont.)
Indicator LEDs
System
Unit
CPU

I/O

~
...
<::I-

Option Indicator LEDs
Expansion 2 Mbyte
Box
Memory

Probable Cause

Corrective Action

o
o

Modem

~
Power supply board
on

off

Reseat the board. If conditions
persist, replace the board.

Brightness/contrast
Screen saver is on.
Monitor board

Adjust the controls. Press any key
to refresh the screen. Adjust
brightness control to maximum to
check if raster is displayed. If not,
replace monitor board.

off

CPU board

Reseat. Replace if conditions persist.

off

I/O board

Reseat. Replace if conditions persist.

1:1
~

i...c·
;:!

Table 2-2 Symptoms (cont.)
Indicator LEDs
System
Unit
CPU

I/O

Option Indicator LEDs
Expansion 2 Mbyte
Box
Memory

Probable Cause

Corrective Action

Modem

Video displayed on screen
on

off

Normal settings

No corrective action is necessary.

off

System unit LED

Check LED connection and CPU
board. Replace LED assembly if
blown.

off

CPU board jumpers

Check jumpers. See paragraph
2.3.2.

CPU board

Reseat. Replace if conditions persisto See Appendix C for error
numbers.

t:--

I/O board

Reseat. Replace if conditions persisto See Appendix C for error
numbers.

c
c.....

;:\

Cici

.....

~
~

off

Memory option

Reseat. See Appendix C for error
numbers.

off

on
(or
flashes)

Modem option

Reseat. See Appendix C for error
numbers.

.....

off

Expansion box not
correctly attached to
system unit

Check pins on expansion box.

Power regulator

Reseat. Replace if faulty.

.......

off

~;:,
~

*.,

iii
.....
c

t;w
~
"""

o~
~

Table 2-2 Symptoms (cant.)
Indicator

Probable Cause

Corrective Action

Diskette drive LED on

Diskette drive or
cables

Make sure all cables are secure
and not damaged. If the drive is
faulty, see Appendix C for error
numbers.

Speaker does not sound

Keyboard LEOs off

Speaker cable

Make sure the speaker cable is not
damaged and is firmly plugged into the CPU board.

Speaker driver

Replace the CPU board.

Speaker

Replace the speaker.

Keyboard connection

Make sure the keyboard cable is
firmly plugged in. Tum power
off, then on again.

CPU board

Keyboard fuse is soldered to CPU
board for keyboard safety. Replace
CPU board and keyboard.

~
~

$:I

*'"
~

;:s

Troubleshooting the VAXmate Workstation

IIIII

2.3.1 System Halt
There are only a few subtest failures that are severe enough to cause the
system to halt.
Memory access
Data path validity
Address
ROM checksum
Stack and vector area
Refresh request
CMOS shutdown byte.
If the CPU board LED stays on and the system speaker beeps twice, replace the

CPU board. See Chapter 5, FRU Replacement.
Initializing the video gate array chip may also cause the system to halt. If the
I/O board LED stays on, and no error number is reported, replace the I/O
board. See Chapter 5, FRU Replacement.

2.3.2 CPU Board Jumpers
The ROM diagnostics will not run correctly if the three jumper locations on
the CPU board are configured incorrectly. Make sure the jumpers are configured as follows. See Figure 2-3.
WI
W2
W3

Installed
Removed
Installed if the system DOES contain a diskette drive. Removed during manufacturing testing without diskette drive in
system.

NOTE

If the VAXmate workstation DOES have a diskette drive, make sure
that jumper W3 is installed, otherwise the ROM diagnostics will
not test the diskette drive. Jumper W3 may have been removed at
the factory when manufacturing tested the VAXmate workstation
without a diskette drive.
If the VAXmate workstation DOES NOT have a diskette drive, make
sure to remove jumper W3. If the jumper is not removed, the ROM
diagnostics will report error number 40 (drive A recalibration test)
- the drive was not found, therefore the recalibration test could
not be performed. The VAXmate workstation stops the test and
tries to boot from the hard disk, then the network.

2-15

IIIII Troubleshooting the VAXmate Workstation
FACTORY SETTINGS
W1 (INSTALLED)

[QJ

CPU BOARD JUMPER LOCATIONS W1, W2, & W3
LJ-0899

Figure 2-3

CPU Board Jumpers

2.3.3 Error Numbers
If the test detects an error the following occurs:

• The horizontal bar brightens.
• A two-digit error number displays.
• The system speaker beeps twice.
• The VAXmate workstation tries to boot.
NOTE

See Appendix C for a complete list of error number and the test that
failed.

2-16

Troublesbooting tbe VAXmate Workstation

\\\\\

To correct the error, follow these steps.
1. If error number 40, 60, 83 (or 87) displays, do the following.

• 40 - Drive A recalibration failure
Make sure the diskette drive cable is firmly connected. Repeat the
test.
If the system does not have a diskette drive, make sure jumper W3 on
the CPU board is removed. Repeat the test. (See Paragraph 2.3.2).
• 60 - Keyboard not recognized
Turn off the VAXmate workstation power. Make sure the keyboard is
firmly plugged in.
Turn on the power. If the keyboard is still not recognized, turn off
the power and replace the keyboard.
Turn on the power. If the keyboard is still not recognized, and the
keyboard LEDs are off, the problem is the CPU board. There is a
keyboard protection fuse soldered to the CPU board. Replace the
CPU board (make sure to keep the keyboard plugged in because the
original keyboard has a fault that caused the fuse to blow on the CPU
board.
Turn on the power.
• 83 (or 87) - Drive 0 (or drive 1) hard disk not formatted
This error can occur for the following reasons.
- Hard disk controller is not seated correctly.
- Hard disk is newly installed and is not formatted.
- Sometimes this error occurs on formatted drives; in which case,
back up disk if necessary. Then, tell the customer to format the
disk by using the MS-DOS FDISK and FORMAT commands. These
commands are on the customer's keydisk.

2-17

IIIII Troubleshooting the VAXmate Workstation
2. If any other error number displays, find the error number in Appendix
C. This appendix lists error numbers and corresponding FRUs. Make
sure the FRU is firmly seated before replacing it.
NOTE
When the system boots, the error number moves to the middle of
the top line. It stays there until scrolled off the screen either by
the system or you.

3. Run the Power-Up test again.
4. If the same error number displays again, replace the faulty FRU. See
Chapter 5, FRU Replacement. If you replace a monitor board or CRT
assembly, make the necessary monitor adjustments. See Chapter 4, Monitor Adjustments.
NOTE
If the system boots while showing an error number, you must still

replace the faulty FRU.
5. Run the Power-Up test again to make sure you have corrected the problem and that there are no more failing FRUs.
NOTE
Only one error number displays. Correct the error by reseating or
replacing the FRU, then run the Power-Up Test again to make sure
there are no more errors.

6. Run Extended Self-Test.

2.3.4 What To Do If the VAXmate Power Shuts Down
The VAXmate workstation can shut off automatically, or fail to power-up, for
one of several reasons.
• Thermal shutdownjovervoltage
• Overcurrent shutdown
• Blown fuse or short circuit due to:
A component in the system unit,
A component in the expansion box, or
A faulty connection between the system unit and the expansion box.

2-18

Troubleshooting the VAXmate Workstation

\\\\\

2.3.4.1 Thermal Shutdown/Overvoltage
If the VAXmate workstation overheats, it automatically shuts down. This is
called thermal shutdown. If the VAXmate system unit overheats, it shuts down.
If, however, an expansion box overheats and shuts down, it does NOT cause
the system unit to shut down. The VAXmate workstation is rated as an environmental Class A system. The temperature in the room must be between 56° and
90° F (13° to 32° C) to operate the VAXmate workstation. In addition, the
VAXmate computer needs 10 centimeters (4 inches) of clearance around it for
air circulation. Make sure the vents are clear and NOTHING is resting on the
computer.
CAUTION
If there is an overheating problem, the diskette in the drive may get
damaged before the VAXmate workstation automatically shuts down.

Test for thermal shutdown as follows.
1. Turn off the power.
2. Remove the diskette from the drive to make sure it is not warped or
damaged.
3. Let the VAXmate workstation cool for 15 seconds.
4. Turn on the power. Power should be restored. If power is not restored,
and the green power LED is not on, there may be a blown fuse or a
problem relating to the power supply. If an expansion box is present and
its LED is off, check the expansion box for short circuit or overcurrent
shutdown.

2.3.4.2 Overcurrent Shutdown
A non-DIGITAL option can require more than the allowable current. If this
happens, the system unit and/or expansion box might not power up. This is
evident if the system unit power LED is on and the expansion box LED is off
(if an expansion box is present). Do the following.
1. Turn off the power and wait 15 seconds.

2. Turn the power on. If the power is present, run the Extended Self-Test.

2-19

IIIII Troubleshooting the VAXmate Workstation
3. If the power still fails, remove the non-DIGITAL options.
4. Check the options to make sure they meet DIGITAL electrical specifications for the industry-standard option slots (Chapter 1). If they do not
meet the DIGITAL specifications, tell the customer.
5. Turn on the power.
6. If the power still fails, replace the hard disk or hard disk controller.
7. Test the power. If it fails again, replace the power regulator.
2_3-4_3 Blown Fuse or Short Circuit

A fuse can blow when there is a power overload or short somewhere within
the system unit or expansion box. Each time you test the power in the following steps, make sure to check the fuse and replace it if necessary; see Paragraph 5.3.3. Correct the problem as follows.
1. Turn off the power switch. Let the VAXmate workstation cool for 15
seconds.
2. Turn on the power. If the power fails to come on, go to step 3.
NOTE

If the system unit power LED is on, but the expansion box LED is

off, go to step 5.
3. If no expansion box is present, go to step 8.
If an expansion box is present, separate it from the system unit. See

Chapter 5, FRU Replacement. Replace the system unit fuse if it is bad.
(There is no fuse on the expansion box).
4. Turn the system unit power on. If the power fails again, go to step 8.
The problem is in the system unit.
If the power stays on, however, the problem is in the expansion box.

2-20

Troubleshooting the VAXmate Workstation 11111

5. Remove all non-DIGITAL options in the expansion box then test the
power as follows.
a. Replace the bad fuse on the system unit.
b. Reattach the expansion box to the system unit.
c. Turn on the power.
If the power stays on, then the problem is one of the non-DIGITAL
options or the option slot itself. Go to step 6. If there is still no power,
go to step 7.
6. Test the option slot as follows.
a. Remove the option from the suspected faulty slot.
b. Install the hard disk controller board into that slot.
c. Turn on the power. If the hard disk functions, then the slot is good.
Inform the customer that one of the non-DIGITAL options is causing
the problem.
NOTE

See Table 1-1, Electrical Description. The two option slots in the
expansion box can only accept industry-standard options that
require power of 9.5 watts/slot maximum and a clock frequency
of 8 megahertz. The slots use an industry-standard bus with 8 or
16 bits.
7. Try to restore power as follows.
a. Check the expansion box pins that connect to the system unit. Make
sure they are not damaged or touching each other. If they are damaged or touching each other, fix them and test the power again. If
the power is present, go to step 11.
b. Unplug the hard disk cable from the power regulator board.
c. Test the power. If the power is present, replace the hard disk and go
to step 11.
d. Unplug the controller board.
e. Test the power. If the power is present, replace the controller board.

2-21

IIIII Troubleshooting the VAXmate Workstation
f. Test the power. If the power is present, go to step 11.

g. If the power still fails, replace the power regulator or the connections to the power regulator. If the power is present, go to step 11.
8. Remove the modem option and the 2 Mbyte memory option one at a
time, if they are present; then test the power by replacing the fuse and
turning on the power. If the power is present, replace the options and
go to step 11 to complete the test procedure.
9. Replace the system unit power supply board (see Chapter 5, FRU
Replacement), then test the power. If this is successful, go to step 11 to
test the VAXmate workstation.
10. Replace the system unit FRUs one at a time, in the order they are listed
here, and test the power each time. Make sure to change the fuse each
time if it is blown.
Power supply board
CPU board
I/O board
Diskette drive
Monitor board
CRT
11. Run the Extended Self-Test.

2.4 Extended Self-Test
Run the Extended Self-Test as follows.
1. Insert a formatted high-density diskette into the drive. See Figure 2-4.

The high-density diskette is included in the Maintenance Kit.
NOTE

The diskette drive part of the test only reads the diskette; it does
not write on it, therefore, data on the diskette is not lost.
2. Lock the drive by pushing the drive latch down.
3. Press the Ctrl/Alt/Home keys at the same time to start the test. See
Figure 2-5. The test takes 3 to 5 minutes to run, depending on the
number of options installed. During the video part of the test, the
screen flashes and blinks.

2-22

Troubleshooting the VAXmate Workstation 11111

LJ-0900

Figure 2-4

Inserting the Diskette

LJ-0901

Figure 2-5

Extended Self-Test Keys

2-23

IIIII Troubleshooting the VAXmate Workstation
A successful Extended Self-Test gives the same results as the Power-Up test
(Paragraph 2.3) with these exceptions.
• The system does not start booting.
• The screen displays a configuration list of the system's hardware.
Figure 2-6 is a sample list. If a component is not recognized or an option is
not present, a dashed line displays.
NOTE

Options, other than those shown in Figure 2-6, are not listed. If Li
is not displayed, see step 2 in the next procedure.

1024 Kb

1 RX
1 RO
Li

BASOO
80287

PCSOX-MA
VSXXX-AA
LK250 01
272S6 MO/OA/YR
08- 00-28- 02-78-SE

STANDARD MEMORY
OPTIONAL MEMORY
DISKETTE DRIVE
HARD DISK DRIVE OPTION
LITHIUM BATTERY
EXPANSION BOX
MATH COPROCESSOR OPTION
MODEM OPTION
MOUSE
KEYBOARD VERSION NUMBER
ROM AND REVISION DATE
ETHERNET ADDRESS

LJ·l031

Figure 2-6

Sample Configuration Display

Check the accuracy of the list as follows.
1. If the list is accurate, and there are no error numbers, press any key to
start the booting process.
2. If the list is not accurate, the reason is one or more of the following
conditions.
An expansion box is present but the lithium battery (Li) is not listed

because it was not recognized. Correct the problem as follows.
a. Turn off the power and wait 15 seconds for the hard disk to stop
spinning.

2-24

Troubleshooting the VAXmate Workstation

IIIII

b. Turn on the power again, and let the Power-Up test complete.
c. Run the Extended Self-Test again. Make sure Li is displayed in the
configuration list. See Paragraph 2.4.1.2, New Expansion Box.
A module needs to be reseated. Do the following steps.
a. Turn off the system and wait 15 seconds.
b. Reseat the option you know is missing from the list. See Chapter 5,
FRU Replacement.
c. Run Extended Self-Test again.
d. If the option still is not on the list, run the Service Diagnostics Individual Test for that component. See Paragraph 2.5.6.
If an error is detected during the Extended Self-Test, the following occurs.

• The horizontal bar brightens.
• A 2-digit error number displays.
• The system speaker beeps twice.
• The LED on the faulty FRU stays on.
• The configuration list also displays.
To correct the error, do the following.
1. Find the error number and the corresponding faulty FRU in Appendix C.
NOTE

If error number 43 displays, there is a read error.
Make sure there is a known good formatted, high-density diskette in
the drive and that the diskette is inserted correctly.
2. Inspect and reseat the FRU.
3. Run the Extended Self-Test again.
4. If the error number displays again, replace the FRU.
5. Run the Extended Self-Test again.
NOTE

There may be more than one failing FRU. Replace all failing FRUs.

2-25

IIIII Troubleshooting the VAXmate Workstation
2.4.1 Exceptions to Testing Results
2.4.1.1 If the Customer Reports a Modem Problem
If the customer is having problems with the modem, but the Power-Up Test
and the Extended Self-Test do not display a modem error number, then check
the modem jumper setting. The jumper setting is probably disabling the
modem part of the ROM diagnostics. This is NOT an incorrect jumper setting.
When there is an industry-standard option in the expansion box, the option
may be using the ROM space that the modem needs for ROM diagnostics.
Depending upon how the jumper is set (enable or disable) the ROM diagnostics will or will not test the modem. The jumper does not, however, affect
the Service Diagnostics modem test.
Test the modem as follows.
1. Run the Service Diagnostics. See Paragraph 2.5.

2. Select the Individual Test mode of the Service Diagnostics. See Paragraph 2.5.6.
3. Run individual test number 17 - Modem Tests.
4. If the VAXmate workstation displays an error number during the test,
see Appendix C.

2.4.1.2 New Expansion Box
When an expansion box is first installed do the following steps.
1. Run the Extended Self-Test as follows.
a. Turn on the power and let the power-up test complete.
b. Turn the power off and wait 1 S seconds for the drive to spin down,
then turn it on again to clear the power fail bit in the event timer.
Allow the Power-Up test to complete. The power fail bit indicates if
the battery is present thus controlling Li (lithium battery) in the
configuration list.
c. Run the Extended Self-Test to display the configuration list.
2. Make sure that Li (lithium battery) and BASOO (expansion box) appears
in the configuration list, verifying the operation of the lithium battery.
The lithium battery provides back-up power for the event timer on the
CPU board.

2-26

Troubleshooting the VAXmate Workstation

IIIII

2.4.1.3 New Hard Disk in Expansion Box
When a hard disk is newly installed, it must be formatted (if it has not
already been formatted) by running specific formatting software. If the hard
disk is not formatted, error number 83, drive 0 (or 87, drive 1) displays
during the Extended Self·Test. Have the customer format the hard disk.
2.4.1.4 LA75 Printing Erroneous Characters
Use the following steps to power·up the printer.
1. Make sure the VAXmate workstation and IA75 are both off.

2. Turn on the VAXmate workstation power first.
3. Then turn on the IA75 power.
Use the following steps to power-down the IA75.
1. Turn off the IA75 power first.
2. Then turn off the VAXmate workstation power.

2.5 Service Diagnostics
To run the Service Diagnostics, follow these steps.
1. Turn off the VAXmate workstation power.

2. Insert the Service Diagnostics diskette in the drive. Push the drive latch
down to lock it.
3. Turn on the VAXmate workstation power.
After the Power-Up test completes, the system loads the Service Diagnostics.
If at any time you must restart the Service Diagnostics, press the
Ctrl/Alt/Del keys at the same time. See Figure 2-7.

2-27

IIIII Troubleshooting the VAXmate Workstation

.---.. .---.. .----, ,--,

H H H j---1
j---1 j---1 j---1 j---1

H IH H H
j---1 '};--\ )---\

ro,1
LJ-0902

Figure 2-7

Restarting Service Diagnostics

2.5.1 System Errors Versus Diagnostic Errors
System errors are operating system errors that can occur any time you are
using the Service Diagnostics. These messages are listed in Table C-4. To
correct ANY system error, you must start the Service Diagnostics again by
doing one of the following.
• Turn the system off, then on again, or
• Restart the Service Diagnostics by pressing the Ctrl/Alt/Del keys at the
same time.
Diagnostic errors occur if the Service Diagnostics find faulty hardware. When
a Service Diagnostic error occurs, a four-digit error number displays at the
bottom of the screen. Table C-2, lists these numbers and corresponding FRUs.

2.5.2 Previously Detected Error
If either the Power-Up test or Extended Self-Test detected an error, and you

did not correct it, the Service Diagnostics displays the screen shown in Figure 2-8 with the two-digit error number. Find the two-digit ROM diagnostic
error number in Table C-l, and res eat the faulty FRU. Start the Service Diagnostics again. If the same screen displays again with the same error number,
replace the faulty FRU.

2-28

Troubleshooting the VAXmate Workstation 11111

ROM DIAGNOSTIC ERROR MENU

ERROR#60 was detected while running the ROM
diagnostics. Refer to the VAXmate Service Guide
for the ROM diagnostic error number listings and
a description of the corrective action that may
be taken.
Perform one of the following

- To continue when ready, press the Return key.
- To restart the system, press the Ctrl, Alt, Del keys together.

LJ·l033

Figure 2-8 ROM Diagnostic Error
Press the Return key to continue with the Service Diagnostics.

2.5.3 Main Diagnostic Menu
The Main Diagnostic Menu consists of the following items.
1. The System Configuration list
2. The testing status (shown only after the test is executed)
3. A list of the four service diagnostic modes
4. The instructions for choosing a mode. See Figure 2-9.

2-29

IIIII Troubleshooting the VAXmate Workstation
VAXmate SERVICE DIAGNOSTICS VERSION 1.2 mm/dd/yy
Copyright (c) 1987 Digital Equipment Corporation

========== SYSTEM CONFIGURATION =========
Memory size
Option memory size
Diskette drive(s)
Hard disk
80287
Battery

1024 KB
2048 KB
1
present
present
present

Expansion box
Modem
Mouse
LK250 keyboard
ROM rev date
Ethernet address

present
none
present
present
mm/dd/yy
08-00·2B-02· 78·5E

II MAIN DIAGNOSTIC MENU II
1 SYSTEM TEST
[default]
*2 I ndividual tests
3 New diagnostic installation
4 Error log
Perform one of the following
. To select an option, use the arrow keys to move the pointer,
then press the Select key .
. To start the selected option, press the Return key.
- To restart the system, press the Ctrl, Alt, Del keys together.

LJ-,034

Figure 2-9

Main Diagnostic Menu

The system configuration lists the hardware recognized by the VAXmate
workstation. If the list is not accurate, try to update it as follows.
NOTE

Do not remove the Service Diagnostics diskette to update the
configuration list.
1. Run Extended Self-Test by pressing Ctrl/Alt/Home. Let the test
complete.
2. Start the Service Diagnostics again by pressing the Return key.

3. Check the accuracy of the system configuration list. If the list is still
incorrect, there may be a hardware or interconnection problem. Reseat
the unrecognized FRUs, then perform steps 1 through 3 again. If the list

2-30

Troubleshooting the VAXmate Workstation

IIIII

is still incorrect, run the Individual Test for the unrecognized FRU. See
Paragraph 2.5.6 and Appendix B for a description of the Individual
Tests in the Service Diagnostics.
The testing status displays the word PASSED, to indicate that all of the tests
passed, or the word FAILED to indicate that one or more tests failed. These
tests apply only to the Service Diagnostics. The testing status does not display
the first time you see the Main Diagnostics Menu.
There are four modes in the Service Diagnostics. Paragraph 2.5.4 explains
how to run each of the modes.
1. System Test
This mode checks only the VAXmate system unit and the keyboard - not
the expansion box, hard disk, or options. The test itself is non-interactive, although, you are initially prompted to choose an error reporting
method and to installioopback connectors. When the test completes, the
passed/failed status displays on the Main Diagnostic Menu.
System test takes about 25 minutes to run.
2. Individual Test
This mode can check the VAXmate workstation, the expansion box
(including DIGITAL options), and some networking functions. Thus, you
can choose to test a part of the system, the entire system, or part of the
network. You can also choose an error reporting method. Many of the
Individual Tests are interactive, so do not leave the area while running
the tests.
The tests vary in length from several seconds to 25 minutes. A summary
of each Individual Test and subtest is given in Appendix B.
3. New Diagnostic Installation
This mode updates existing tests, or adds new tests to the Service Diagnostic diskette. Upon completion, the updated or new test is listed on
the Individual Test menu.

2-31

11111 Troubleshooting the VAXmate Workstation

4. Error log
This mode displays the current list of errors from the test you ran. The
error log is the only place in the Service Diagnostics where error numbers, found during testing, are stored.
Both System Test mode and Individual Test mode ask if you want the
errors to be recorded in the log. If you choose not to have the errors
recorded, then the Error Log mode is not in effect. The default is to
have the errors recorded in the log.
The error log lists the following items.
a. The hard error and soft error counts of all tests run. The maximum
count is 9999 errors.
b. Each subtest in which an error was found. No more than 52 failed
subtests are listed. The remainder are not logged.
c. Each 4-digit error number that corresponds to the failed subtest.
Again, no more than 52 are logged.
d. When the error occurred - the nth time through the test loop. For
example, the error occurred on the fourth pass through the test
loop.
NOTE

The word "pass" has two different meanings in the Service
Diagnostics. Do not be confused by them. The first means the test
was successful (versus unsuccessful). For example, the test passed
(versus failed). The second means the number of times the test
was run. For example, an error was found on the seventh test pass.
The error log lists the hard errors for all tests. It also lists the soft errors
for the diskette test, the hard disk test, and the network test. Soft errors
are errors that are internally correctable by the hardware or are correctable after software retries. Soft errors are not displayed on the screen
while the test is running, but are logged in the error log. Hard errors are
errors that are not correctable by the hardware or by software retries.
Hard errors display on the screen while the test is running, and are also
logged in the error log.
Appendix C lists the four-digit error numbers and corresponding FRUs.

2-32

Troubleshooting the VAXmate Workstation

IIIII

2.5.4 Selecting a Mode from Main Diagnostic Menu
Select a mode as follows.
1. Press the up or down arrow keys to move the screen arrow, or press the
number of the mode. See Figure 2-10.
2. Press the Select key. An asterisk indicates the selected mode.
3. Press the Return key.
The following paragraphs describe how to use each of the four Service Diagnostic modes.

2.5.5 System Test Mode
System test takes about 25 minutes to run. To abort the test, press the
CtrljPF3 keys. This is not a normal break in testing, therefore, the screen
does not display the word passed or failed.

SELECT

..., ...,

" . , or-->

f-' .f-' 1-1 1--,
f-' If-' !-1 1-1
f-' ,f-' 1-1 1-1

H H H
----' 1-1 f-'

Figure 2-10

Service Diagnostics Mode Selection Keys

2-33

11111

Troubleshooting the VAXmate Workstation

2.5.5.1 Test Option Menu
The first screen displayed in system test mode is the Test Option Menu (Figure 2-11).
This screen shows the different error reporting methods. Select one option
from each group or press the Return key to select the default options. An
asterisk indicates the selected option.
1. "Prompt on error" causes system test to halt when an error is found. A
small screen displays that asks if you want to proceed from error or
loop on error. (Figure 2-12). Prompt on error is a default option.

===========:11

SYSTEM TEST OPTION MENU

II~=======

==::> *2 continue on error

1 PROMPT ON ERROR

[default]

3 LOG ERRORS
4 do not log errors

[default]

5 SINGLE TEST PASS

[default]

* 6 five test passes
7 continuous test pass

Perform one of the following

- To select option(s), use the arrow keys to move the pointer.
then press the Se leet key.
- To start the selected option(s), press the Return key.
- To return to the main menu, press the F9 key.

LJ-l035

Figure 2-11

2-34

Test Option Menu

Troubleshooting the VAXmate Workstation

INDIVIDUAL TEST: COMMUNICATION PORT TEST
Subtest 01: Comm internal register test
Subtest 02: Comm off board loop back test

11111

REV 1.2
PASSED

Perform One of The Following =====jJ

1 PROCEED FROM ERROR [default]
~*2 Loop error

. To select an option, use the arrow
keys, then press the SELECT key .
. To start, press the RETURN key.

Baud Rate: 50 Baud
Data size: 5
Total error count = 0001 ===!!:::::===============:::::!I
ERROR: 020B

LJ-1036

Figure 2-12

Prompt on Error

If you want to "proceed from error," the test continues from where it

found the error. More tests can be affected by the error. Proceed from
error is the default. If you want to "loop on error," the failing test
loops as tightly as possible. The test updates and displays the
percentage of failures every 10 loops (Figure 2-13). To get out of the
loop, press the Ctrl/PF3 keys.
2. "Continue on error" does not halt the test when an error is found. A
four-digit error number displays and the test continues.
3. "Log errors" keeps a log of the errors recorded during testing. After the
System Test completes you can view and/or print the error log by
selecting mode 4 at the Main Diagnostic Menu. The error log records
the total error count and up to 52 errors. It also records the test

2-35

IIIII Troubleshooting the VAXmate Workstation
number in which the error occurred, and when it occurred. The error
log also records any soft errors that can occur. Log errors is a default
option.
4. "Do not log errors" does not record any errors found during the system
test, however, the total error count is still tallied.
5. "Single test pass" means the system test is executed only once. This is
the default option.
6. "Five test passes" means the system test is executed five times.
7. "Continuous test passes" executes the system test indefinitely until you
press the CtrI!PF3 keys.
NOTE
Some parts of the testing disable the keyboard temporarily.
Therefore, if the test does not abort, keep typing CtrI!PF3 until it
does.

INDIVIDUAL TEST: COMMUNICATION PORT TEST

REV 1.2

Subtest 01: Comm internal register test
Subtest 02: Comm internal loop back test

PASSED

Baud Rate: 50 Baud
=Total error count = 0001
ERROR: 0208

Data Size: 5+1 Stop

Char Transfer: 256

========= Total pass count = 0001 = = =

percent error 100

LJ-1Q37

Figure 2-13

2-36

Loop on Error

Troubleshooting the VAXmate Workstation

IIIII

2.5.5.2 System Test Requirements
Figure 2-14 shows the System Test Requirements screen.
The loopback connectors, including the T-connector and two terminators, are
in the Maintenance kit. To insert the loopback connectors into their respective ports follow these steps. DO NOT TURN OFF THE VAXmate workstation
and DO NOT UNPLUG THE POWER CORD or you will have to start the
Service Diagnostics again.
1. Assemble the network port loopback connector by attaching the two
SO-ohm terminators to the opposite ends of the T-connector. See Figure
2-15.

=======~II SYSTEM TEST REQUIREMENTS 1:=1========
Insert loopback connectors onto the following:
· The comm port
· The printer port
· The mouse port
· The network port

========== Perform one of the following
. To continue when ready, press the Return key .
. To return to the main menu, press the F9 key.

LJ-1038

Figure 2-14 System Test Requirements

2-37

IIIII Troubleshooting the VAXmate Workstation
2. Using extreme caution, disconnect the VAXmate workstation from the
network (Figure 2-16).
CAUTION
Be VERY careful not to cause a communications break in the
network. Unplug the T-connector from the VAXmate workstation.
DO NOT unplug the T-connector from the ThinWire Ethernet
cable, or from the terminator if one is present.

Do not turn off the VAXmate system or it will be necessary to start
the diagnostics again.

T-CONNECTOR
TERMINATOR
LJ-1045

Figure 2-15

2-38

Assembling the Network Port Loopback Connector

Troubleshooting the VAXmate Workstation 11111

LJ·' 046

Figure 2-16 Disconnecting from the Network

2-39

11111 Troubleshooting the VAXmate Workstation

3. Disconnect the following cables if they are present. See Figure 2-17.
Mouse
Printer
Communications
4. Plug the loopback connectors into the VAXmate workstation. See Figure
2-18.
MOUSE

PRINTER

COMMUN ICATIONS
LJ-0905

Figure 2-17

2-40

Disconnecting Mouse, Printer, and Communications
Cables

Troubleshooting the VAXmate Workstation

MOUSE

IIIII

NETWORK

~~~

//~~)/

/
;'

PRINTER

COMMUNICATIONS
LJ-0906

Figure 2-18

Installing Loopback Connectors

2-41

11111

Troubleshooting the VAXmate Workstation

2.5.5.3 System Test Execution
System test is ready to begin. Press the Return key. As the system test is
running, the screen displays the following information. See Figure 2·19.
• A list of the system tests. The test that is running is in reverse video.
• The passedjfailedjxxxxxx status of each test.
If XXXXXX is displayed, it can mean one of two things:

a. It is up to you to determine if the test passed or failed (such as in the
speaker test).
b. The test was skipped.
• An activity indicator. This is in the upper right corner of the screen and

indicates that there is activity - that the test is still executing. Each tick
is about 1 second (and counting down). Not all tests use this feature.
• The total number of test passes.
• The total number of errors detected from all completed selected tests.
• A 4-digit error number (if an error is found). This is in the lower left
corner of the screen. The error number stays on the screen until a new
error is detected or until the next test is loaded.

2-42

Troubleshooting the VAXmate Workstation

...
Memory
Comm
Video

PASSED
PASSED
PASSED

IIIII

Keyboard

Printer
Mouse
Network
Event Timer

xxxxxxxx

xxxxxxxx
xxxxxxxx

==================== Activity indicator = nnnn =
Subtest 01: F.D.C. Status register test
Subtest 02: F.D.C. Data register test
Subtest 03: F .D.C. Interrupt capability test
Subtest 04: Diskette Drive recalibration test
Subtest 05: Diskette Drive step mechanism test
Subtest 06: Diskette Drive step rate timing test
Subtest 07: Diskette Drive hi·speed rotational speed test
Subtest 08: Diskette Drive verified seek test
Subtest 09: Diskette Drive track/sector read test

Reading track : 48
High density mode
Total error count = 0000

PASSED
PASSED
PASSED
PASSED
PASSED
PASSED
PASSED

XXXXX

Diskette side 0
Total pass count = 0001

LJ-1039

Figure 2-19

System Test Execution

When the test is complete, the following occurs.
• The Main Diagnostic Menu displays after selected number of passes have
run .
• The word "passed" displays if the test is successful, or "failed" if there is
a failure.
If there is a failure do the following.

1. Read the error log to display the list of errors. Error log is in effect
unless you choose not to log errors from the Test Option Menu. See
Paragraph 2.5.8 for information about the error log. This also explains
how to print the error log.
2. Find the error number(s) in Appendix C.
3. Replace the failing FRUs. See Chapter 5, FRU Replacement.
4. Run the system test again.

2·43

11111

Troubleshooting the VAXmate Workstation

2.5.6 Individual Tests
The Individual Test Menu is shown in Figure 2-20. Select a single test or as
many of the individual tests as you want. Appendix B describes each test. If
you suspect a problem in a particular area of the system, run the individual
test associated with that area. Allow all selected tests to run to completion.
NOTE

The Memory Test runs as the default test if you do not make an
individual test selection.
If you suspect a network problem, see Chapter 3, ThinWire Ethernet (Para-

graph 3.3).
To abort the test, press the Ctrl/PF3 keys. However, note the following when
using Ctrl/PF3 to abort testing.
• Some parts of the test disable the keyboard temporarily. Therefore, if the
test does not abort, keep trying until it does.
• The word passed, failed, or XXXXXX does not display on the main menu.

2-44

Troubleshooting the VAXmate Workstation

IIIII

====~II INDIVIDUAl. TEST MENU I =========
II

.1=1

01 MEMORY TEST
[default]
02 Comm Port Test
03 Video Test
04 Diskette Test
05 Speaker Test
06 Printer Port Test
07 Mouse Test
08 Event Timer Test
09 Networking Test
~* 1080287 Test
11 Keyboard Test
12 Printer Confidence Test
13 Video Alignment Patterns

14 Option Memory Test
15 System Interaction Test
16 Hard Disk Test
17 Modem Test
18 Park Drives
19 Local Network Link Test

Perform one of the following

. To select a test, use the arrow keys to move the pointer,
then press the Select key.
. To start the selected test, press the Return key.
- To return to the main menu, press the F9 key.

LJ-1040

Figure 2-20

Individual Test Menu

To run the individual tests follow these steps.
1. Select the testes). You can choose as many as you want. See Figure 2-10
for the keys to use.
a. Press the up or down arrow keys to move the screen arrow, or press
the test number. Press the number keys exactly as the test indicates.
For example, for test number 08, type 08.
b. Press the Select key. An asterisk indicates the selected test. To
deselect the choice, press the Select key again. This functions like a
toggle switch.
c\ Press Return.
The Test Option Menu displays. It is similar to.the Test Option Menu
shown in Figure 2-11.

2-45

11111 Troubleshooting the VAXmate Workstation

2. Select an option from each group or press the Return key to select. the
default options. For a description of the options, read Paragraph 2.5.5.1.
3. Press Return.
The Individual Test Execution screen displays (Figure 2-21). It is similar to
the System Test Execution screen, explained in Paragraph 2.5.5.3, except for
the following differences.
• Only one test displays (test title and revision number).
• You are prompted to set up certain hardware conditions or to respond to
certain tests. For example, you may be prompted to insert a loopback
plug for the communications test, or verify keyc1icks for the keyboard
tests.

INDIVIDUAL TEST:

EVENT TIMER TEST

REV 1.2

================= Activity indicator = 0106 ====
NOTE: Date and time will be invalid after this test is run.

Subtest 01: Cmos address lines test
Subtest 02: Cmos ram test
Subtest 03: Cmos data retention test

PASSED
PASSED

==== Total error count = 0000 ======Total pass count = 0001 ====

Lj·l041

Figure 2-21

2-46

Individual Test Execution

Troubleshooting the VAXmate Workstation 11111
NOTE

If you have selected either five test passes or continuous test passes

from the Test Option Menu, then the Individual Test Execution
screen prompts you only the first time through the testing loop.
When the test is complete, the Main Diagnostic Menu displays. The
passed/failed status indicates if all the tests passed or any failed. If there are
failures do the following steps.
NOTE

Soft errors will not cause the overall error status to show FAILED;
therefore, if you are testing the hard disk, diskette, or the network,
you should view the error log.
1. Choose error log mode to read the 11st of errors and error numbers. See
Paragraph 2.5.8 for information on the error log and printing the error
log.
2. Find the 4-digit error numbers in Appendix C.
3. Replace the FRUs. Refer to Chapter 5, FRU Replacement.
4. Run the previously failed test again. If either the CPU board or I/O
board were replaced, run the System Test.

2.5.7 New Diagnostic Installation
Use this mode to update an existing test or to add a new test to the Service
Diagnostics diskette. If an error message displays, see Table C-3, Install New
Diagnostic Messages. Each screen prompts you through the procedure, however, note the following as you use this mode.
• This is the only time that you are allowed to remove or insert a diskette
if the diskette drive LED is on. (When you are not using New Diagnostic
Installation mode, you should not remove or insert a diskette when the
LED is on.)
• Make sure the write-protect tab is removed from the Service Diagnostics
diskette before you incorporate the tests.
• Do not turn off the VAXmate system power.
• The diskette that contains the new and/or updated tests is referred to as
the new disk. The new disk has a maximum of two tests that are to be
incorporated on the Service Diagnostics diskette.

2-47

11111 Troubleshooting the VAXmate Workstation

• Pressing the Ctrl/Alt/Oel keys reboots the system and incorporates the
tests.

Mter the tests are incorporated on the Service Diagnostics diskette, do the
following steps.
1. Add a new write-protect tab to the Service Diagnostics diskette.
2. Display the Individual Test Menu and run the incorporated tests to make
sure they are functioning correctly. Also, observe the revision number.

2.5.8 Error Log Mode
You can view the error log by choosing mode 4 at the Main Diagnostic Menu.
If the error log is empty it is because of one of the following conditions.
• The Service Diagnostics did not find any errors.
• You selected the "do not log errors" option from the System Option
Menu or the Individual Option Menu.
Figure 2-22 is a sample error log screen.

2-48

Troubleshooting the VAXmate Workstation

~RROR LOG

========11/

IIIII

~I.==============~II

Hard error count = 0003
=Test
04
04
04

Soft error count = 0000

Total pass count = 0001

number ====== Pass
======== Error0422
0001
0420
0420

0001
0001

NO MORE RECORDED ERRORS

=========== Perform one of the following ==========
o

To display more errors, press the Return key.
To return to the first screen, press the Prev screen key.
To print a copy of the screen, press the F2 key.
To return to the main menu, press the F9 key.

LJ-1042

Figure 2-22

Sample Error Log

To print a copy of the error log on the local printer, press the F2 key. To view
subsequent error message screens, press the Return key. Press the Prey
Screen key to view the first error screen. You can view the log as many times
as you need to until you run another test.
The error log is erased when you choose another test and it starts running.
Therefore, you cannot display the log again unless you repeat the test.

2-49

Chapter 3
Thin Wire Ethernet

3.1 Introduction
ThinWire Ethernet is an alternative baseband cabling system. It provides full
Ethernet capability for personal computers, workstations, and low-end systems in offices and other local work areas. ThinWire Ethernet can connect up
to 30 stations, according to the configuration rules, in one 185 meter segment (606 feet).
This chapter gives the following information.
1. A description of the hardware components in a ThinWire network
2. ThinWire Network troubleshooting
3. Installation guidelines and procedures
4. An example of a ThinWire Local Area Network (LAN)
5. A ThinWire Network map and worksheet.
Parts for the ThinWire network are listed in Appendix A. Additional documentation for the network is listed in the Introduction.

3.2 ThinWire Network Hardware Components
Figure 3-1 shows the basic cable components of the ThinWire network. Use
only DIGITAL ThinWire cable and connectors to install any ThinWire
network.
Figure 3-2 shows the cabling diagram for two similar network environments.
The procedure for installing each of these is in Paragraphs 3.5.1 and 3.5.2.

3-1

IIIII Thin Wire Ethernet
TO WORKSTATION

....

~
,/r
ThinWire I :
SECTION

...

BNC CONNECTOR

~
TERMINATOR
~"#\.. @iM:J)

T-CONNECTOR
BNC CONNECTOR

~--....-~ .ncr

.)~.. B=x=

BARREL CONNECTOR

LJ-1001

Figure

3-1 Cable Components

A. WORKSTATION ThinWire NETWORK
I
~1.~--------------SEGMENT--------------~.(n~~~~f1

ThinWire CABLE ,..-------C::J-__
EXPANSION BOX

"'-_ _"

I
I

:---SECTION~

c::::J

BARREL CONNECTOR

TERMINATOR

T-CONNECTOR

B. WORKSTATION WITH MicroVAX II SERVER'ThinWire NETWORK
~--------SEGMENT----------~~

MicroVAX
SERVER

LJ-1016

Figure 3-2

3-2

Two Sample ThinWire Networks

Thin Wire Ethernet 11111

3.2.1 ThinWire Network Terms
ThinWire Ethernet Cable
This cable is a thin, flexible, and easy to install coaxial cable. It is fully
compatible with standard Ethernet cable. ThinWire cable has a jacket of
either Teflon or PVC (polyvinyl chloride). Both Teflon and PVC can be used
in an open space such as an office, laboratory, or manufacturing facility.
Teflon-insulated cable is approved by the Underwriters' Laboratory (UL) for
safe use in environmental airspace (such as the space between the drop ceiling and the floor above) without placing the cable in a conduit.
PVC-insulated cable, however, is not acceptable for use in environmental
airspace that has a return airflow (environmental airspace used for return air
from heating and air conditioning systems) because it produces toxic fumes
when burned. Therefore, non UL-approved equipment must be placed in a
conduit when installing it in a return airspace.
Check local building codes for regulations.
ThinWire Cable Section
This is a length of ThinWire cable that has BNC connectors at both ends.
Sections are available in various lengths.
1.9 meters (6 feet)
3.8 meters (12 feet)
4.4 meters (15 feet)
9.4 meters (30 feet)
ThinWire Segment
This consists of one or more ThinWire cable sections linked together (by
barrel or T-connectors). A segment must be terminated at both ends. Another
description is that a segment is a run of cable sections between two terminators. The maximum segment length is 185 meters (606 feet). There can be
up to 30 stations on each segment -or 60 male/female connections.
T-Connector
This connector has three connection points - the stem and two arms. A Tconnector is used to connect two sections of ThinWire cables (one at each
arm of the T) and a workstation (at the stem of the T). If there is a workstation and only one section of ThinWire cable, then the other arm of the T
must have a 50-ohm terminator connected to it. The stem of the T must
connect directly to the workstation. No cable may be inserted between the
stem and the workstation.

3-3

IIIII Thin Wire Ethernet
NOTE

Use T-connectors only when you connect ThinWire cable to
workstations or to a DESTA (DIGITAL ThinWire Ethernet Station
Adapter).
Terminator
A terminator is a resistor that must be installed at each end of a ThinWire
segment to electrically complete the circuit. See Figure 3-2. The end of a
segment is usually at one arm of a T-connector. A terminator must never
connect to the stem of aT-connector.
Barrel Connector
This connector has a BNC connector at each end. The barrel connector connects two sections of ThinWire cable.
BNC Connector
This connector is a small type N connector used in the ThinWire network.
This connector has the characteristic of uniform, low impedance. (BNC
stands for Boyonet Neil-Concelman, the inventor).
DESTA (DIGITAL ThinWire Ethernet Station Adapter)
A DESTA converts ThinWire Ethernet signals to standard Ethernet signals for
addressable devices (nodes), such as a MicroVAX II computer on a network.
The DESTA is a direct link between a MicroVAX II server, or other data
terminal equipment (DTE) that has a network controller, and a ThinWire
network. Refer to the DESTA Technical Description for more information.
DEMPR (DIGITAL ThinWire Ethernet Multiport Repeater)
The DEMPR allows the ThinWire network to be expanded to its maximum
size.

The DEMPR has eight ports to which eight ISS-meter ThinWire cable segments can be connected. Each of the eight DEMPR ports contains a built-in
terminator. The DEMPR retimes, amplifies, and repeats all signals it receives
from a segment and then transmits the Signals to all of the segments connected to the DEMPR.
There is a ninth port on the DEMPR that is used to connect a standard
Ethernet transceiver. This logically connects the ThinWire segments to the
standard Ethernet.

3-4

IIIII

Thin Wire Ethernet

DIGITAL Faceplate
The faceplate (Figure 3-3) has four ports for connecting devices to various
communication networks.
1. BNC - A ThinWire connector for connecting VAXmate workstations to

the ThinWire Ethernet.
2. CATV - An F-connector for connecting video equipment to a cable TV

network.
3. MMJ - A Modified Modular Jack for connecting nonintelligent terminals
and printers to a twisted pair data communications cable.
4.

MJ - A Modular Jack for connecting telephone equipment such as the
VAXmate modem cable.

There are two versions of the faceplate; one is mounted on a standard electrical box, the other on a special surface mount wall box. Both versions have
four ports.
Server
This is any network node where there are shared resources. Some server
types are compute, disk, application, and print servers. These can be combined on one node.

LJ-1025

Figure 3-3

DIGITAL Faceplate

3-5

11111 Thin Wire Ethernet

3.3 ThinWire Network Troubleshooting
Test the ThinWire Network as follows.
1. Make sure all external cabling is firmly plugged in.
2. Run the VAXmate Power-Up Test and the Extended Self-Test. Correct
any problems that occur in those tests.
3. Run the VAXmate Service Diagnostics. See Chapter 2, Troubleshooting
the VAXmate Workstation. First run the System Test.
Then run the following two Individual Tests. The directions for running
these two tests are in Appendix B, Test Descriptions.
09 Network Test
19 Local Network Link Test
These tests check the VAXmate networking hardware and logic, the
ThinWire cables, and the cable connections.
4. Test the VAXmate Ethernet controller logic by running the Loop Line
Controller Test as follows. You may ask the user to perform the test for
you.
a. Disconnect the workstation from the network.
WARNING

Be careful when you disconnect the VAXmate workstation from the
network. See Figure 2-16 for the correct method of doing this.
b. Install the network port loopback connector. See Figure 2-18.
c. Ask the user for the key diskette and insert it in the diskette drive.
d. Let the Power-Up test complete and let the system boot. After about
20 seconds, the screen displays a message stating that the system
tried to connect to the server. It also displays an error message stating that the network is busy (NET804 error). These messages occur
because the VAXmate workstation is not currently connected to the
network.
e. At the A:\> prompt type: NTU <Return>
f. At the NTU> prompt type: LOOP LINE CONTROLLER <Return>

3-6

Thin Wire Ethernet 11111

g. The instructions on the screen are to unplug the network cable from
the VAXmate workstation and to plug in the network port loopback
connector. However, you have already done this.
h. Press any key to start the test.
i. When the test is complete, reconnect the VAXmate workstation to the

network.
A successful test means the VAXmate Ethernet logic is functioning
correctly. If the test fails, replace the I/O board. Then run the PowerUp test, Extended Self-Test and the Service Diagnostics network tests.

3.4 Installation Guidelines
Note the following about ThinWire installations.
• Each VAXmate workstation is shipped with a section of ThinWire cable,
a T-connector, and one terminator (50-ohms).
• The maximum length of a Thinwire segment is 185 meters (606 feet).
Thirty stations (or up to a combination of 60 male/female connector
junctions) can be connected to a single segment. When a DEMPR is
used, 29 can be connected to each segment of ThinWire cable - the
DEMPR is counted as one connection.
• Stations can be attached directly to the cable segment using T-connectors. T-connectors plug directly into the station.
• There must be at least 0.5 meters (1.6 feet) between ThinWire station
connectors.
• A maximum of eight ThinWire segments can be connected to a DEMPR
to form a network of up to 232 stations. A DIGITAL Ethernet Local
Network Interconnect (DELNI) can be used to concentrate up to eight
DEMPRs. These configurations can either stand alone or connect to the
standard Ethernet using an H4005 transceiver .
• The Ethernet limit of 1024 devices can be configured in a single
ThinWire Ethernet network (using DEMPRs and DELNls) .
• A maximum of 60 connector junctions are allowed in one ThinWire
segment. T-connectors and barrel connectors each count as two connector junctions. A DIGITAL faceplate counts as one junction. A DEMPR
also counts as one junction.

3-7

IIIII Thin Wire Ethernet
• When you disconnect a workstation from the network, ALWAYS do so at
the stem of the T-connector. See Figure 2-16 for the correct method of
disconnecting from the network.
WARNING
Disconnecting the T-connector or a terminator from an operating
network disrupts the operation of the network.

• Never install a cable at the stem of the T-connector. (Figure 3-4, example B). Example A shows a correct installation.
• Never join two T-connectors or a barrel and a T-connector together.
(Figure 3-4, example C).
• Never create a loop configuration. (Figure 3-4, example D). There
MUST be a terminator at both ends of a segment (Figure 3-4, example
A). Only one end can be a DEMPR.

CORRECTLY INSTALLED

IMPROPER USE OF T· CONNECTOR

Figure 3-4 Correct and Incorrect ThinWire Segment Installation

3-8

IIIII

Thin Wire Ethernet

3.5 Installation Procedures
Four typical installation tasks are as follows.
1. Installing a ThinWire network that uses a VAXmate (with expansion

box) as the server
2. Installing a ThinWire network that uses a MicroVAX II computer as the
server
3. Adding a workstation to the end of an existing ThinWire segment
4. Adding a workstation to the middle of an existing ThinWire segment
Always run the Extended Self-Test on each VAXmate workstation before
installing the VAXmate on the network.
NOTE

To install a more complex ThinWire network, see the DECconnect
ThinWire Configuration Guide, the DECconnect System Planning
and Configuration Guide, and the DEC connect Installation and
Verification Guide.
There is also an example of a ThinWire Local Area Network (LAN)
in Paragraph 3.6.
When you set up your ThinWire network, write down the total cable length
of each section you install. See Paragraph 3.7 for a worksheet and network
map to fill out as you install the network.

3.5.1 ThinWire Network and VAXmate Server
Figure 3-5 shows a ThinWire network that uses the following components.
5 VAXmate workstations (more can be added)
1 expansion box (used on the VAXmate workstation that will be the server)
2 terminators (50-ohms each)
4 sections of ThinWire cable (BNC connectors installed)
5 T-connectors

3-9

IIIII Thin Wire Ethernet

T - CONNECTOR

GJ TERMINATOR
LJ-1 043 A

Figure 3-5

ThinWire Network with a VAXmate Server

Install the ThinWire network as follows. Also see Figure 3-1 for connector
detail.
1. Install the VAXmate (with expansion box) that will be used as the
server. See the VAXmate User's Guide and the VAXmate Expansion
Box Installation Guide and Owner's Manual for instructions.
2. Connect the ThinWire cable (with its T-connector and terminator) to
the VAXmate workstation. This cable is shipped with the VAXmate
workstation.
3. Install the next workstation as follows.
a. Prepare the next cable to be attached by removing its terminator
from the T-connector. Save the terminator for future use and testing.
b. Connect the end of the ThinWire cable of the previously installed
VAXmate workstation, to the T-connector of the cable you are now
installing.
c. Connect the T-connector to the back of the VAXmate workstation you
are now installing.
Repeat step 3 for each VAXmate workstation to be installed until you
are ready to install the final VAXmate workstation on the network.
4. Install the final VAXmate workstation on the network as follows.
a. Remove the cable from the T-connector shipped with the final
VAXmate workstation. Do not remove the terminator from this Tconnector.

3-10

Thin Wire Ethernet

IIIII

b. Connect the end of the ThinWire cable of the previous VAXmate
workstation you installed to the T-connector of the final VAXmate
workstation.
c. Connect the T-connector to the last VAXmate workstation.
5. Install server software (see the VAXmate System Administrator's Guide
for instructions).

3.5.2 ThinWire Network with MicroVAX II Computer Server
Figure 3-6 shows a ThinWire network that uses the following components.
4 VAXmate workstations (more can be added)
1 expansion box
2 terminators
4 sections of ThinWire cable (BNC connectors installed)
5 T-connectors (you must order one of these, the others are shipped with the
VAXmate workstations)
2 printers (with printer cables)
1 MicroVAX II computer
1 DESTA (With DESTA cable)
1 console terminal (with console terminal cable)

LJ·l020A

Figure 3-6 ThinWire Network with MicroVAX II Server

3-11

IIII1 Thin Wire Ethernet
The console terminal shown in Figure 3-6 is used to install software and run
diagnostics. The terminal connects directly to the MicroVAX II server. The
printers connect directly to the server and to a workstation. The console
terminal and printer are not considered stations on the network.
NOTE
The DESTA has a 15-pin cable that connects to the MicroVAX II
server. If you are installing a MicroVAX server and only one
VAXmate workstation, you must also order a terminator.

Install a ThinWire network with a DESTA and MicroVAX II server as follows.
Also see Figure 3-1 for connector details.
1. Install the MicroVAX II computer, console terminal, and the printer.
CAUTION
Option boards for the MicroVAX II computer must be installed by
an authorized service representative. Dangerous voltages can exist
within the computer.

2. Connect the DESTA to the MicroVAX II computer. See the DESTA Installation Card for instructions.
3. Remove the terminator from the T-connector on the ThinWire cable
shipped with the first VAXmate workstation to be installed.
4. Connect the terminator to the T-connector that is to be used on the
DESTA. (This T-connector has no ThinWire cable attached.)
5. Connect the T-connector to the DESTA.
6. Connect the end of the ThinWire cable shipped with the first VAXmate
workstation to be installed to the T-connector on the DESTA.
7. Connect the ThinWire cable with its T-connector to the VAXmate
workstation.
8. Remove the terminator from the T-connector on the ThinWire cable
shipped with the next VAXmate workstation to be installed on the network. Save the terminator for future use and testing.
9. Connect the end of the ThinWire cable to the T-connector on the
VAXmate workstation you just installed on the network.
10. Connect the T-connector to the next VAXmate workstation to be
installed.

3-12

Thin Wire Ethernet

IIIII

11. Repeat steps 7,8,9, and 10 for each VAXmate workstation to be
installed until you are ready to install the last VAXmate workstation on
the network.
12. Connect.the end of the ThinWire cable (shipped with the last VAXmate
workstation to be installed) to the T-connector on the VAXmate workstation you just installed on the network. Do not remove the terminator
from this cable.

13. Connect the T-connector to the last VAXmate workstation to be
installed.
14. Inform the System Administrator that the network is available.
15. Install the VAXjVMS server software (see the VAXmate System Administrator's Guide for instructions).

3.5.3 Adding a Workstation to End of ThinWire Segment
Add a VAXmate workstation to an existing segment as follows (Figure 3-7).
NOTE

This procedure shuts down the network operation on the segment.
Inform all users. Get permission from the System Administrator.
1. Inform all users that the network will be shut down.

2. Remove the terminator from the last workstation on the segment.

LJ·1021

Figure 3-7 Adding a VAXmate Workstation to End of Existing
Segment

3-13

IIIII Thin Wire Ethernet
3. Connect the end of the ThinWire cable shipped with the new VAXmate
workstation to the T-connector on the last VAXmate workstation. Do not
remove the terminator from this cable.
4. Connect the T-connector to the new VAXmate workstation. Make sure
all connections are secure.
5. Inform the System Administrator that the network is available.

3.5.4 Adding a VAXmate Workstation to Middle of an Existing
Segment
Add a VAXmate workstation in the middle of an existing segment as follows
(Figure 3-8).
NOTE

This procedure shuts down the network operation on the segment.
1. Inform all users that the network will be shut down.
2. Remove the terminator and cable from the ThinWire cable shipped with
the new VAXmate workstation.

LJ-1022

Figure 3-8 Adding a VAXmate Workstation to Middle of an
Existing Segment
3. Connect the T-connector to the new VAXmate workstation.
4. Remove the ThinWire cable from the T-connector on one adjacent
VAXmate workstation.
5. Connect the ThinWire cable to one side of the T-connector on the new
VAXmate workstation.

3-14

Thin Wire Ethernet

IIIII

6. Connect the ThinWire cable from the T-connector on the other adjacent
VAXmate workstation.
7. Connect the ThinWire cable to other side of the T-connector on the
new VAXmate workstation. Make sure all connections are secure.
8. Inform all users that the network is available.

3.6 ThinWire Local Area Network (LAN) Example
Figure 3-9 shows how a DEMPR can be used to create a ThinWire LAN. The
DEMPR has eight ThinWire network ports - four segments are connected in
Figure 3-9. Each segment can be 185 meters long.
Notice that each segment follows the installation guidelines.
For more information about using a DEMPR configuration to build a wider
area network, see the list of related documents in the Introduction.
TO THE
TRANSCEIVER
AND STANDARD
ETHERNET CABLE
(IF PRESENT)

LJ-0907

Figure 3-9

Sample ThinWire LAN

3-15

IIIII Thin Wire Ethernet
3.7 ThinWire Network Map and Worksheet
The System Administrator has a configuration map of the network. Use the
map to determine the following information.
• Devices on the network
• Lengths for each ThinWire cable section per segment
• Number of connections per segment
The worksheet identifies devices and users on the network. You can help the
System Administrator in filling out the following worksheet.
Node
Name

Logical
Name

Alias

1_____ 1______ _
1____ -

Office
Location

Contact Person

Telephone
Number

- - - - - - - - - - - - - - - ______ 1 __________ 1

______ _

--------------- ______ 1__________ 1

- - - - ______ 1

3-16

______ 1 ______ - -

- - - - ______ 1

- ______ 1 ______ --

- - - - ______ 1

I
- _____ -1- __ -_---

- - - - ______ 1

,
,

Chapter 4
Monitor Adjustments

4.1 Introduction
This chapter describes general adjustment procedures for the monochrome
monitor assembly. For several of the adjustment procedures, you need a
DIGITAL metric tape measure (pjn 29-25342).
Before making any adjustments do the following steps.
1. Turn off the VAXmate workstation power.
2. Insert the Service Diagnostics in the drive, push the latch down to lock
in the diskette, and close the drive door.
3. Turn on the VAXmate workstation power. Allow the Power-Up test to
complete.
4. Let the system stabilize for five minutes. If there is no video display,
increase the brightness to make sure the raster is displayed. See Paragraph 4-2. If there is no raster see Table 2-2, Symptoms.
5. At the Main Diagnostic Menu, select option 2, individual tests.
6. At the Individual Test Menu, select option 13, Video Alignment Patterns.
7. At the Individual Test Option Menu, press the Return key for the default
selections.
8. Start the adjustment procedures. If it is necessary to make adjustments,
remove the system unit back door and cover. The procedure for doing
this is in Chapter 5, Paragraphs 5.3.5 and 5.3.6.

4-1

IIIII Monitor Adjustments
4.2 Brightness and Contrast Adjustment
The brightness control sets the current flow through the control grid (G 1) of
the CRT. If set too high, the entire grid is displayed on the screen. The contrast control adjusts the brightness of the characters and lines by controlling
the current through the video amplifier circuit. To check these settings:
1. Select pattern number 5. Check for 15 distinct bars increasing in inten-

sity from left to right across the screen.
2. If all bars are not present, adjust the brightness and contrast controls
(Figure 4-1).

LJ-090a

Figure 4-1

Brightness and Contrast Controls

3. If all bars are still not present, there is a problem with either the monitor
board or I/O board. Replace the monitor board and return to Paragraph
4.1 for testing. (See Chapter 5 for FRU replacement.)
4. If all bars are still not present, replace the I/O board and return to
Paragraph 4.1 for testing.

4-2

Monitor Adjustments

IIIII

4.3 Internal Monitor Adjustments
To make many of the internal adjustments, remove the system unit back door
and cover. The procedures for removing the back door and cover are in Chapter 5, Paragraphs 5.3.5 and 5.3.6.
Table 4-1 lists the symptoms and the corresponding adjustment to correct the
problem. If an adjustment cannot be made satisfactorily, replace the monitor
board. If the adjustment still can't be made satisfactorily, replace the CRT.
However, remember to install the original monitor board. When installing a
new monitor board or CRT, perform the adjustments in the order listed in this
table.
Table 4-1

Adjustments, Patterns, and Control Locations
Align
Pattern

Loc.

Etch
Label

Para.
Ref.

Symptom

Adjust

Dark screen

Brightj
contrast

Side of
monitor

Horiz movement

Horiz hold

Monitor
board

4.3.1

Retrace lines

Cutoff

Monitor
board

4.3.2

Screen narrow

Width coil

Monitor
board

4.3.3

Screen height
400 mode

Height 400

Monitor
board

4.3.4

Screen not centered

Centering
rings

Yoke rings

4.3.5

Screen slanted

Rotation

Yoke
collar

4.3.6

Bright edges

Video comp

Monitor
board

4.3.7

Screen height
250 mode

Height 250

Monitor
board

4.3.8

Focus

6 (or 8)

Monitor
board

4.3.9

10 Out of focus

4.2

4-3

11111 Monitor Adjustments

Figure 4·2 shows the monitor board controls and their label names. They may
be in slightly different locations than on the monitor board you have, because
the monitor board versions are different. However, they do function
identically.

_.;.---TP

LJ-0909

Figure 4-2

4·4

Monitor Board Controls

Monitor Adjustments

IIIII

4.3.1 Horizontal Hold
The horizontal hold control adjusts the output of the line oscillator. Horizontal
hold should not have to be adjusted because the control is preset and sealed at
the factory. However, if the control was inadvertently moved, use the following procedure to adjust horizontal hold.
1. Display pattern 6, screen of E's (400 line mode).

2. Connect the clip lead of the anode discharge tool to chassis ground.
3. Use the probe tip of the tool to touch the square of etch labeled TP. See
Figure 4-3.
4. Adjust the horizontal hold (HH) control until the picture slowly moves in
either direction across the screen.
5. When the probe tip is removed, the picture should immediately lock-in.

Figure 4-3

Horizontal Hold

4-5

IIIII Monitor Adjustments
4.3.2 Cutoff
The cutoff control sets the threshold of the accelerator grid (G2) of the CRT.
If set too high, retrace lines are displayed on the screen. Display pattern 6

(the 400 line mode screen of E's) and follow these next steps to adjust cutoff
control.
1. Set the brightness control to maximum and contrast control to minimum.
See Figure 4-1.
2. Adjust the cutoff control (G2) (see Figure 4-2) so the raster is just barely
visible (almost at extinction).
3. Turn G2 clockwise about 30 to 45 degrees (Figure 4-4). The display
brightens. There should be no retrace lines visible. If you still see the
retrace lines, replace the monitor board.
4. Return the brightness and contrast controls to normal settings.

K'GR"S
I
I
I

o
I

G2 CONTROL ON MONITOR BOARD
LJ-0911

Figure 4-4

4-6

Cutoff Adjustment

Mont'tor Adjustments

IIIII

4.3.3 Width Coil
The width coil (W) adjusts the width of the line sweep across the screen.
Display pattern 6, and use the metric tape measure to adjust width. Follow
these next steps.
1. Move the keyboard aside to avoid aCcidentally pressing a key. If you acci-

dentally press a key, causing the display to blank, you will have to restart
the Service Diagnostics.
2. Measure the width, at the center of the screen, from the outer edge of the
left border to the outer edge of the right border. See Figure 4-5. The
distance should be 240 mm (±2 mm).

3. If necessary, adjust the width coil (W). See Figure 4-2.

I·

240mm (±2mm)

·1

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EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
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EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

LJ·0912

Figure 4-5

Width Measurement

4-7

IIIII Monitor Adjustments
4.3.4 Height - 400 Line Mode
This control sets the amplitude of the ramp signal to the field deflection
circuit to blank the screen at the correct height in 400 line mode. To adjust
the height do the following steps.
1. Display pattern 6, the 400 line mode screen of E's.

2. Measure the height at the center of the screen from the outer edge of the
top border to the outer edge of the bottom border. See Figure 4-6. The
distance should be 150 mm (±2 mm) in 400 line mode.
3. If necessary, adjust the 400 line height control (H4).

150mm
(±2mm)

LJ·0913

Figure 4-6

4-8

Height Measurement

Monitor Adjustments

IIIII

4.3.5 Centering Rings
This procedure adjusts the yoke centering rings. Follow these steps and see
Figure 4-7.
1. Display pattern 6, the 400 line mode screen of E's.
2. Measure the distance from the left border's outer edge to the left bezel's

inner edge (a).
3. Then, measure the distance from the right border's outer edge to the

right bezel's inner edge (b). The difference (b - a) should be less than 2
mm.
4. Measure the distance from the top border's outer edge to the top bezel's
inner edge (c).
5. Then, measure the distance from the bottom border's outer edge to the
bottom bezel's inner edge (d). The difference (d - c) should also be less
than 2 mm.

Ib -al <2mm
Id - cl (2mm
Figure 4·7

Centering Measurement

LJ·0914

4-9

IIIII Monitor Adjustments
WARNING
High voltages exist in this area. Make sure to remove jewelry before
adjusting the centering rings.

6. To center the picture to within the 2 mm tolerances, adjust the centering
rings on the yoke as shown in Figure 4-8. Use the tilt screen mechanism
to position the CRT screen at its lowest position. This causes the yoke to
be at its highest position thereby making it easier to access the centering
rings.
It may be necessary at this point to readjust the width and height.

YOKE COLLAR SCREW

YOKE CENTERING RINGS
LJ-0915

Figure 4-8

4-10

Yoke Centering Rings

Monitor Adjustments

IIIII

4.3.6 Rotation
This procedure adjusts the yoke collar to compensate for a rotated (slanted)
display. Check the rotation as follows.
1. Display pattern 6, the 400 line mode screen of E's and Figure 4-9.

2. Measure the distance between the bottom edge of the border and the
bezel - take three different measurement readings along this line.
3. Compare the results. If the difference between any of the measurements
is greater than ±2 mm, then follow these steps.

a=b=c (±2mm)
LJ-0916

Figure 4-9

Rotation Measurement

4-11

11111 Monitor Adjustments

WARNING

High voltages exist in this area. Remove jewelry before loosening
the screw.
a. Loosen the yoke clamp screw on the collar that secures the yoke to the
neck of the CRT. See Figure 4-8.
b. Turn the yoke to adjust a rotated (slanted) display.
NOTE
As you make the adjustment, make sure the yoke is pushed toward

the front of the CRT (keep it from slipping back). Otherwise, the
geometry of the display is affected.
c. Tighten the screw while you hold the yoke pushed firmly toward the
front of the CRT.
If the screen is curved or bowed by more than 2 mm at the top, bottom or
sides, replace the CRT - bowing cannot be adjusted.

4.3.7 Video Compensation
The video compensation control, at the video amplifier output, compensates
for the capacitance of the CRT. Make this adjustment as follows.
1. Display pattern 6, the 400 line mode screen of E's.
2. Set the contrast control to maximum, then reverse the direction 1/4 turn.
3. Set the brightness control to as Iowa setting that allows the picture to be
viewed.
4. Turn the video compensation (VC) control fully counterclockwise (from
the etch side) until it stops.
5. Look for the intensified lines (transition from dark to light) at the inside
edge of the right border.
6. Turn the VC control clockwise until the line just disappears.
7. Return the brightness and contrast controls to normal settings.

4-12

Monitor Adjustments

IIIII

4.3.8 Height - 250 Line Mode
This control sets the amplitude of the ramp signal to the field deflection
circuit to blank the screen at the correct height during 250 line mode. Adjust
the height as follows.
1. Display pattern 7, the 250 line mode screen of E's.
2. Measure the height at the center of the screen from the outer edge of the
top border to the outer edge of the bottom border. See Figure 4-6. The
distance should be 150 mm (±2 mm).
3. If necessary, adjust the 250 line height control (H2) and measure the
height again.

4.3.9 Focus
The focus control adjusts the current through the focus grid (G3) on the CRT.
Adjust the focus as follows.
1. Display pattern 6, the 400 line mode screen of E's, or 8, the Grid/Circle.
2. Examine the pattern at the four corners and in the center of the screen.
Each line should be sharp and well-defined.

4-13

Chapter 5
FRU Replacement

5.1 Introduction
This chapter describes how to remove and replace each VAXmate field replaceable unit (FRU). Only qualified service technicians should remove and replace
FRUs.
Table 5-1 lists each FRU and the paragraph numbers of the corresponding
removal or replacement procedures. To install many of the FRUs, you can simply do the reverse of the removal procedure.

5-1

11111 FRU Replacement
Table 5-1

FRUs and Removal/Replacement Procedures Paragraph Numbers

FRU

Paragraph Number

System Unit
Fuse

5.3.3

2 Mbyte memory option

5.3.7

Modem option

5.3.8

Math coprocessor option (80287)

5.3.9

Speaker

5.3.10

Monitor board

5.3.11

CRT (monochrome)

5.3.13

Diskette drive

5.3.15

CPU board

5.3.17

Power LED assembly

5.3.19

IjO-video board

5.3.21

Power supply board

5.3.23

Expansion Box

5.3.2

Hard disk subsystem
Hard disk drive

5.3.25

Read/write board

5.3.28

Hard disk controller board

5.3.33

Option boards

5.3.34

Option backplane

5.3.35

Fan assembly

5.3.36

Power connector and bridge

5.3.37

Power regulator board

5.3.38

Battery for event timer

5.3.39

Keyboard

5.3.40

Mouse

5.3.41

5-2

IIIII

FRU Replacement

5.2 Before You Replace Any FRUs
The following rules apply when you are removing or installing VAXmate FRUs.
• You must always turn off the power and unplug all external cables before
you remove any FRUs (Paragraph 5.3.1).
WARNING

When disconnecting the network cable, always follow the procedure
shown in Figure 2-16. Do not disconnect the T-connector at the
terminator or cable. Always disconnect the T-connector from the
VAXmate workstation.
• Always use a grounded wrist strap and grounded work surface when you
open the system unit or expansion box, or handle any internal components. Static electricity can damage printed circuit boards and mass storage devices.
• After you replace an FRU, make sure to run the Power-up test, the
Extended Self-Test, and the Service Diagnostics' System test. If you
replace the 2 Mbyte memory, the modem, or any FRU in the Expansion
Box, also make sure to run the individual test for that component.
These tests verify that the new component functions correctly and also
report any additional errors.
• Whenever the expansion box is separated from the system unit the event
timer stops. The event timer, located in the system unit, receives power
from the battery, located in the expansion box. Therefore, when you
attach the expansion box to the system unit, you should run the
Extended Self-Test to check the system configuration.
NOTE

Set the power switch to off and wait 15 seconds for the hard disk to
stop spinning. Set the power switch to on and let the power up test
complete. Then, run the Extended Self-Test.

5-3

11111 FRU Replacement

5.3 Replacing FRDs
5.3.1 Turning Off Power and Unplugging External Cables
1. Turn off power to the VAXmate system and unplug all external cables
(Figure 5·1).
2. If an expansion box is attached to the VAXmate workstation, unplug any
cables present (Figure 5-1).

THIN WIRE
ETHERNET
CABLES

LJ·0917

Figure 5-1 Cable Locations

5-4

FRU Replacement

IIIII

5.3.2 Separating the Expansion Box from the System Unit
l. Unplug all external cables (Paragraph 5.3.1).

2. Release the three locks in the locations shown (Figure 5-2).
3. Lift the system unit straight up. The unit is heavier toward the screen.

LJ·0818

Figure 5-2

Separating the Expansion Box from the System Unit

5-5

IIIII FRU Replacement
5.3.3 Fuse Replacement
The VAXmate workstation fuse is under the system unit. The expansion box
does not have a fuse.
1. Unplug all external cables (Paragraph 5.3.1).

2. If attached, separate the expansion box from the system unit (Paragraph
5.3.2).
3. Gently tip the system unit on its left side.
CAUTION

Do not tip the system unit on its back or front. The back door, CRT
screen, or drive door may get damaged.
4. Replace the fuse (Figure 5-3).
5. Return the VAXmate workstation to its normal position.
TIP SYSTEM ON ITS SIDE

..I
Ld 0918

Figure 5-3

5-6

Fuse Location

FRU Replacement

IIIII

5.3.4 Opening the System Unit Back Door
1. Unplug all external cables (Paragraph 5.3.1).

2. Press the power cord latch and pull the door open (Figure 5-4).
NOTE

The back door does not open flat. Do not lean on or apply any
weight to an open back door.

Figure 5~4

Opening the Back Door

5·7

IIIII FRU Replacement
5.3.5 System Unit Back Door Removal
1. Unplug all external cables (Paragraph 5.3.1).

2. Open the back door (Paragraph 5.3.4).
NOTE

The back door does not open flat. The door is shown flat for clarity.
3. Remove the two back door screws (Figure 5-5).

LJ-0727

Figure 5-5

5-8

Removing the Back Door Screws

FRU Replacement

IIIII

4. Swing the door up and align the restraining bars (links) with the plastic
tabs (Figure 5-6).

Figure 5-6

Swinging the Door Up

5-9

11111 FRU Replacement

5.· Release the links from the tabs and remove the door (Figure 5-7).
To install the back door, do the reverse of steps 1 through 5.

LJ-0729

Figure 5-7

5-10

Releasing the Links to Remove the Door

FRU Replacement

IIIII

5.3.6 System Unit Cover Removal
1. Remove the back door (Paragraph 5.3.5).

2. Press the three latches on the cover with a thin·bladed tool, such as a
screwdriver (Figure 5-8). Be careful not to scratch the top of the
VAXmate workstation.
3. Lift the cover away from the unit (Figure 5-8).

LJ·0730

Figure 5-8

Removing the Cover

5-11

\ \ \ \ \ FRU Replacement

4. Note the location of the boards (Figure 5-9).
5. To install the system unit cover, do the reverse of steps 1 through 4.

DISKETTE DRIVE
HEAT SHIELD

4-WIRE
POWER
CABLE

CPU BOARD

BEZEL

PLASTIC
DRESS BEZEL
L-BRACKET

Figure 5-9 Board Locations

5-12

LJ·1468

,. open the back door of the system unit (Paragraph 5.3.4)· you do not

have to remove the back door.
0
2. Re"'- tbe faul W ",e"'oW board (figure 5·, )·

3. Install the neW memory board.

5·13

IIIII FRU Replacement
5:3.8 Modem Board Replacement
1. Separate the expansion box, if present, from the system unit (Paragraph
5.3.2). Although you can gain access to the modem board without separating the two units, you must separate the units to test the new modem.
2. Open the back door of the system unit (Paragraph 5.3.4). You do not
have to remove the back door.
3. If the 2 Mbyte memory board is present, remove it (Paragraph 5.3.7).
4. Release the modem board standoff and remove the faulty modem board
(Figure 5-11).

LJ-0920

Figure 5-11

5-14

Removing the Modem Board

FRU Replacement

IIIII

5. Set the jumper on the new modem board to pins 2 and 3. If an industry
standard option is present, set the jumper to pins 1 and 2 (Figure 5-12).
6. Install the new modem board.
7. If you removed a 2 Mbyte memory board, reinstall it now.
8. Close the back door and plug in all cables.
To test the new modem board, run Individual Test 17, Modem Tests.

LJ-0921

Figure 5-12

Modem Board Jumper Locations

5-15

IIIII FRU Replacement
5.3.9 Math Coprocessor (80287) Replacement
1. Remove the system unit back door (Paragraph 5.3.5) and cover (Para-

graph 5.3.6).
2. Remove the 80287 coprocessor by using the chip removal tool. Be careful not to damage the socket. Figure 5-13 shows the location of the
80287 coprocessor.

Figure 5-13 Installing the 80287 Coprocessor

5-16

LJ-0731

FRU Replacement

IIIII

3. Install the new 80287 coprocessor. Make sure the notched end of the
chip is at the top and that you align the number 1 pin with the number
1 hole. Be careful not to bend the pins.
4. Install the cover and door.
5. Place the "Special Option Installed" label (pjn 36-23792-01) on the
door (Figure 5-14).

LJ-0736

Figure 5-14

Special Option Installed Label

5-17

11111 FRU Replacement

5.3.10 Speaker Replacement
1. Remove the system unit back door (Paragraph 5.3.5) and cover (Para-

graph 5.3.6).
2. Detach the speaker cable from the CPU board (Figure 5-15).
3. Loosen, but do not remove, the screw holding the diskette drive heat
shield to the CRT shield.
4. Lift out the heat shield. It rests in tab slots (Figure 5-15).
5. Press the speaker retainer tab with your thumb and slide the speaker out
(Figure 5-15). Do not lift the speaker out by the wire.
6. Install the new speaker.
7. When installing the heat shield put the extension tab (if present) on the
heat shield into the slot in the top of the diskette drive assembly.

5-18

FRU Replacement 11111

OLD HEAT
SHIELD

1
/

NEW
DISKETTE DRIVE
HEAT SHIELD

SLOT

LJ-0922

Figure 5-15

Removing the Speaker

5-19

IIIII FRU Replacement
5.3.11 Monitor Board Removal
Before you remove the monitor board, make sure you are familiar with the
information in Tech Tip 20, CRT Discharge and Disposal.
1. Unplug all external cables (Paragraph 5.3.1).

2. Remove the system unit back door (Paragraph 5.3.5) and cover (Paragraph 5.3.6).
3. Loosen, but do not remove, the five screws that hold the webbed shield
in place (Figure 5-16).
4. Remove the webbed shield.

OPTIONAL
EXPANSION BOX
LJ·0923

Figure 5-16

5-20

Webbed Shield

FRU Replacement 11111

5. You must always discharge the anode before removing the monitor board
or CRT. Carefully discharge the anode as follows.
WARNING

The CRT uses very high voltage levels that can harm you. Be careful
when discharging the anode.
a. Clip the anode discharge tool to a chassis ground point near the
anode (Figure 5-17).
NOTE

Avoid scratching or marring the CRT glass when you insert the tip
of the anode discharge tool. The CRT is covered with a protective
coating.
b. Using one hand (keep your free hand away from the CRT) slide the
tip of the tool under the rubber boot until the tool touches the anode
wire prongs (Figure 5 -17). Maintain contact for a full 10 seconds.

LJ·0924

Figure 5-17 Discharging the Anode

5-21

11111

FRU Replacement

6. Carefully remove the anode connector from the CRT as follows. Do not
pull the anode connector.
CAUTION

Make sure you have discharged the anode.
a. Fold back one side of the rubber boot while squeezing the prongs
together (Figure 5-18).
b. Lift the anode connector and anode wire away from the CRT (Figure
5-18).

LJ-0925

Figure 5-18

5-22

Removing the Anode Connector

FRU Replacement 11111

d
follows,
Remove the mom'tor boar has Ids
the mom'tor board to t he CRT shield
.
tlu' 0
Iy
D
move
'he
,;crew,
d
power
supp
(
a, fte
Figure 5-1 9) ,
d from the II O-video an
b, Disconnect t he monlt
'or boar
boards,

1/0 BOARD
POWER
SUPPLY
GROUND
WIRE
LJ-0926

Figure 5- 19 Mon1"tor Board Screw

5-23

11111 FRU Replacement

c. Set the monitor board beside the system unit. You should be able to
rotate the board 90 degrees for easier access to the cables.
d. Unplug the 4-pin cable connector and the 9-pin cable connector from
the monitor board (Figure 5-20).
e. Push the anode wire through the opening in the CRT shield (Figure
5-20).

';~
ANODE
WIRE -

~~/f.OMO
/1

POWERSUPPLY

BOARD

LJ-0927

Figure 5-20

5-24

Unplugging Cables and Pushing Anode Wire Through
Shield

FRU Replacement

IIIII

Install the monitor board as follows.
1. Plug the 4-pin and 9-pin connectors into the new monitor board. Make
sure the pins are aligned correctly.
2. Connect the monitor board to the I/O-video and power supply boards.
Make sure to guide the anode wire through the opening in the CRT
shield.
3. Insert the screw that holds the monitor board to the CRT shield.
4. Attach the anode connector as follows.
a. Grasp the boot and squeeze the anode connector prongs together.
b. Push the prongs into the CRT anode opening until they clip into
place.
WARNING

Make sure to attach the anode connector firmly and correctly to
prevent being injured.
c. Secure the anode wire to the CRT.
5. Install the webbed shield.
6. Tighten the webbed shield screws.

5.3.12 CRT Handling Precautioi1s
Make sure you understand Tech Tip 20, CRT Discharge and Disposal, before
handling the CRT. Remember the following precautions.
• Wear safety goggles and gloves while working with the CRT.
• Replace the CRT in an area where risks and exposure are limited to
DIGITAL service personnel only.
• Do not handle the CRT by its neck. Use two hands to hold the CRT by its
sides near the face.
• Keep the CRT away from your body.
• Do not allow the CRT neck to strike anything.
• Do not rest the CRT on its neck.
• Do not let the CRT touch tools, such as screwdrivers and soldering irons.

5-25'

11111 FRU Replacement

• Keep the CRT in a closed shipping container or mounted in the device
cabinetry.
• When you remove the new CRT from its shipping box, store the faulty
CRT in the box with the packing material.
• Seal the box so that only the very tip of the CRT neck is exposed.
• Return the faulty CRT to DIGITAL.

5.3.13 CRT Assembly Removal
The CRT assembly consists of the CRT, yoke, bezel, and braided straps.
1. Unplug all external cables (Paragraph 5.3.1).

2. If an expansion box is present, separate it from the system unit (Paragraph 5.3.2).

3. Follow steps 1 through 7 of the monitor board removal procedure (Paragraph 5.3.11).
4. Place the anode wire over the side of the CRT shield (Figure 5-21). It is
not necessary to guide the anode through the CRT shield opening.

5. Remove the 4-pin connector from the monitor board.
6. Push the tilt bar to tilt the screen to its lowest position so the CRT neck
is at its highest position.
7. Use the diagonal cutters to cut the tie wrap that holds the 9-wire filament connector to the neck of the CRT.
WARNING

Be careful not to cut the wires.
8. Carefully remove the 9-wire filament connector from the neck of the

CRT.
9. Remove the white grounding lug cable from the CRT static band by using
a needle-nose pliers.
10. Remove the spring and save it to use with the new CRT assembly.
11. If present, remove the braided' ground strap from the upper corner of the
CRT to the diskette drive tower by removing only the nut at the CRT.
12. Detach the two braided ground straps from the CRT shield by removing
the screws.

5-26

FRU Replacement

IIIII

4-PIN
CONNECTOR

Figure 5-21

Removing Connectors, Lug, Spring, and Braided
Ground Straps

5-27

11111 FRU Replacement

13. Disconnect the power LED connector from the CPU board (Figure
5-22) .

LJ-0929

Figure 5-22

5-28

Disconnecting Power LED Cable

FRU Replacement 11111

14. Remove the CRT bezel as follows.
a. Use the tilt bar to tilt the screen to its highest position.
b. Slide the system unit to the edge of the table.
c. Remove the three screws on the underside of the front bezel.
d. Remove the left bezel screw (Figure 5-23).
e. Use the tilt bar to reposition the screen to its normal level.
f. Push the system unit back to the center of the table.

g. Remove the diskette drive mounting screw (top) from the diskette
drive housing (Figure 5-23).
h. Lift the bezel away from the CRT.
DISKETTE DRIVE
MOUNTING SCREW

BEZEL

~'~~'~l(-'
~-

"'~ ~~,
D

.
........--1.....,.-

I
A

!
LJ·0930

Figure 5-23

Removing the Four Bezel Screws and the Top Screw

5-29

11111 FRU Replacement

15. Remove the CRT assembly as follows.
a. Push the 4-pin cable through the opening of the CRT shield.
b. Grasp each side to lift the CRT assembly (including spring clip) out
of the VAXmate pivot cradles (Figure 5-24). Do not lift the CRT out
by the neck. The spring clip must clear the tilt channel.

~~_ _- - - SPRING CLIP

LEFT
PIVOT

CRADLE

l.J·0932

Figure 5-24 Removing the CRT Assembly

5-30

FRU Replacement

IIIII

5.3.14 CRT Assembly Installation
1. Place the CRT left pivot in the left pivot cradle.

2. Position the CRT spring clip in the tilt mechanism's curved channel.
NOTE

The spring clip must fit between the top and bottom of the curved
channel, or the CRT assembly will not pivot correctly.

3. Insert the right pivot in the right pivot cradle (Figure 5-25). You might
have to grasp the top of the diskette drive tower and separate it from the
CRT to make more room for the pivot to slide into the cradle.

RIGHT PIVOT

RIGHT PIVOT CRADLE

Figure 5-25

CRT Installation

5-31

IIIII

FRU Replacement

4. Make sure the spring clip and two pivots are installed correctly.
NOTE

The spring clip must be halfway into the channel so that the screen
is at mid-position, prepared for bezel attachment.
5. Attach the bezel as follows. Make sure the power LED does not catch on
the inside.
a. Insert the left bezel screw.
b. Insert the three screws under the bezel.
c. Insert the diskette drive mounting (top) screw.
6. Attach the power LED cable to the CPU board.
7. Tilt the CRT assembly to its lowest position.
8. With the CRT neck at its highest position, connect the 9-wire filament
connector to the neck of the CRT.
9. Make sure to secure the wires to the neck of the CRT by fastening a tiewrap around them.
10. Connect the white ground lug cable.
11. Connect the 4-pin cable to the monitor board.
12. Connect the monitor board to the I/O-video and power supply boards.
13. Insert the screw that holds the monitor board to the CRT.
14. Insert the anode connector in the CRT anode hole.
15. Secure the anode wire to the CRT.
16. Attach the two braided ground straps to the CRT shield.
17. Attach the spring to the spring mount.
18. Attach the webbed shield to the CRT shield.

5-32

FRU Replacement

IIIII

5.3.15 Diskette Drive Removal
1. Remove the system unit from the expansion box, if present.
2. Remove the system unit back door and cover (Paragraphs 5.3.5 and
5.3.6).
3. Remove the diskette drive and housing assembly from the system unit as
follows (Figure 5-26).
a. Unplug the speaker cable and move the cable out of the way.
b. If present, loosen the screw holding the diskette drive heat shield to
the CRT shield; then, remove the diskette drive heat shield.
c. Remove the diskette drive mounting (top) screw from the diskette
drive housing.
d. If present, remove the ground strap from the diskette drive tower.
CAPTIVE DRIVE
HOUSING SCREWS
TOP SCREW
DISKETTE DRIVE
HEAT SHIELD

BRAIDED
GROUND STRAP
LOOSEN SCREW

Figure 5-26

Removing Cables, Screws, and Heat Shield

5-33

IIIII FRU Replacement
e. If present, remove the CPU ground wire screw from the diskette drive
housing.
f. Loosen the two captive drive housing screws.
g. Remove the ribbon cable from the IjO-video board.
h. Remove the 4-wire power cable from the power supply board.
NOTE

Be careful not to damage the speaker plug on the CPU board.
i. Slide the drive and housing assembly to the rear of the system unit to

release the drive housing feet from the slots in the bottom of the
system unit. Then, lift out the drive housing (Figure 5-27).

LJ-0934

Figure 5-27

5-34

Sliding Drive and Housing Out of the System Unit

FRU Replacement

IIIII

4. Slide the drive out of its housing as follows (Figure 5-28).
a. Disconnect the ribbon cable from the drive.
b. Disconnect the power cable from the drive.
c. Remove the four mounting screws from the drive housing.
d. Slide the diskette drive out of its housing.
POWER CABLE

OISKETTE DRIVE

Figure 5-28

Sliding the Diskette Drive from Its Housing

LJ-0935

IIIII FRU Replacement
5.3.16 Diskette Drive Installation
1. Remove jumper FG if present (Figure 5~29). This separates the chassis
ground from the logic ground.
2. Slide the drive into its housing, making sure to orient the drive correctly.
3. Insert the four mounting screws.
4. Connect the ribbon cable and 4-wire power cable to the drive.
5. Lower the drive housing into the system unit. Guide the feet at the bottom of the housing into the slots in the system unit. Push the housing
forward to lock it in position.
6. Tighten the two captive screws.
7. Insert the screw that secures the housing to the front bezel.
8. Plug the power cable into the power supply board.
9. Install the diskette drive heat shield. Make sure the ribbon cable does not
get caught in the front of the heat shield.
10. Plug the ribbon cable into the IjO-video board.
11. Plug in the speaker cable.

5-36

FRU Replacement

IIIII

JUMPER FG

LOCATION

Figure 5-29 JunIper FG Location (Diskette Drive)

5_3.17 CPU Board Removal
To remove the CPU board you must lift out the CPU, I/O-video and power
supply boards together, as one assembly, and then separate the CPU board
from this assembly. Remove the CPU board as follows.
1. If an expansion box is attached, separate it from the system unit.
2. Remove the system unit back door (Paragraph 5.3.5) and cover (Paragraph 5.3.6).
3. Unplug the speaker cable from the CPU board.
4. Unplug the power LED cable from the CPU board (Figure 5-30).
5. Remove the plastic dress bezel from the CPU board by loosening its two
captive screws (Figure 5-22).

5-37

IIIII FRU Replacement
"POWER-ON" LED
CONNECTOR

W-1472

Figure 5-30

Removing LED Cable and Plastic Dress Bezel

6. If present, remove the CPU ground wire screw from the diskette drive
housing (Figure 5-26).
7. Loosen the captive screw at the L-bracket (Figure 5-9).
8. Remove the ribbon cable from the IjO-video board.
9. Remove the 4-wire power cable from the power supply board.
10. Remove the screw that holds the monitor board to the CRT shield.
11. Disconnect the power supply ground wire (Figure 5-31).
12. Separate the monitor board from the IjO-video and power supply boards.

5-38

FRU Replacement 11111

POWER SUPPLY
GROUND WIRE

I
II

"
!!

LJ-0937

Figure 5-31

Power Supply Ground Wire

NOTE

You do not have to unplug any cables from the CRT or monitor
board.
Set the monitor board outside the system. You can rotate the monitor
board 90 degrees to have more working space.

5-39

IIIII FRU Replacempnt
13. Lift the power supply, I/O-video and CPU boards out together (Figure
5-32).
14. Separate the CPU board from the power supply and I/O-video boards.

CPU BOARD
POWER SUPPLY BOARD

LJ-0938

Figure 5-32

5-40

Lifting Out Power Supply, I/O-video, and CPU Boards

FRU Replacement

IIIII

15. Remove the following components, if present, from the CPU board by
using a chip removal tool (Figure 5-33). Save the components for the
new CPU board.
• Math coprocessor chip (80287)
• Ethernet address chip
CAUTION

You must install the old Ethernet address chip on the new CPU
board. This chip contains the user's location as registered with the
network. Also, install the new Ethernet address chip to the faulty
CPU board, then return the faulty CPU board to the branch office
for repair.
• Note the settings for jumpers WI through W3.

FACTORY SETTINGS

Ethernet ADDRESS CHIP

LJ·0939

Figure 5-33

CPU Board Components and Jumpers

5-41

11111 FRU Replacement

5.3.18 CPU Board Installation
In order for the VAXmate workstation to remain compliant with FCC Class A
regulations on computer emissions, do not install the new CPU board (p/n
17-17187) unless the mechanical pans listed in the PC500-UA kit are already
installed.
The PC500-UA enhanced CPU and grounding kit contains one of each of the
following.
Braided ground strap with 10-32 X 1/2" screw and nut
New diskette drive heat shield
6-32 X 3/8" screw
8-32 kep-nut
CPU board (pan number 54-17187)
Instructions
The old board and the new board basically function the same, but the new
board solves the EGA/network conflict. The new diagnostic ROM tests this
function. Do not exchange ROMs between old boards and new boards, or
errors will result and the system might halt. The new board also has a different part number.
Old numbers:

Etch 50-16846 Revision Dl (or earlier)
pin 54-16847

New numbers:

Etch 50-17186 Revision Bl (or later)
pin 54-17187

Use the following procedure to replace the CPU board.
1. If the 80287 coprocessor chip was present, install it on the new CPU
board.
2. Install the old Ethernet address chip on the new CPU board. Install the
new Ethernet address chip on the faulty CPU board.
3. Set the CPU board jumpers (Figure 5-33). If the VAXmate workstation
does not have a diskette drive, make sure to remove jumper W3 (Paragraph 2.3.2).
4. Connect the CPU board to the power supply and I/O-video boards.
Check to make sure the power pins on the back of the CPU board are
installed correctly.
5. Install the entire assembly in the system unit.

5-42

FRU Replacement 11111

6. Connect the CPU ground wire to the top of the diskette drive.
7. Connect the power supply ground wire.
8. Install the monitor board. Make sure to insert the screw that holds the
monitor board to the CRT shield.
9. Connect the ribbon cable to the I/O-video board.
10. Connect the 4-wire power cable to the power supply board.
11. Tighten the captive hold-down screw at the L-bracket at the bottom right
of the CPU board.
12. Install the plastic dress bezel by tightening its two captive screws.
13. Plug the speaker cable and the power LED cable into the CPU.

5-43

IIIII FRU Replacement
5.3.19 Power LED Removal
1. Remove the system unit back door (Paragraph 5.3.5) and cover (Para-

graph 5.3.6).
2. Disconnect the LED cable from the CPU board (Figure 5-22).
3. Use a screwdriver to push the LED assembly out from the CRT bezel
while you gently pull the LED wire from behind (Figure 5-34).

Ii;

LJ-0940

Figure 5-34 Removing the Power On LED Assembly

5-44

FRU Replacement 11111

5.3.20 Power LED Installation
1. Slide the new LED assembly under the diskette drive door spring and into
the LED opening (Figure 5-35).
2. Use the screwdriver to push the LED in firmly. Do not damage the wires
to the LED.
3. Connect the LED cable to the CPU board.

,,,
qi

LJ·0941

Figure 5-35

Replacing the Power LED Assembly

5-45

11111 FRU Replacement

5.3.21 I/O-Video Board Removal
1. Do steps 1 through 14 of the CPU board removal procedure (Paragraph
5.3.17).
2. Remove the five mounting screws that secure the power supply board to
the I/O-video board (Figure 5-36).

,
I

I
I

LJ-0942

Figure 5-36 Mounting Screws

5-46

FRU Replacement

11111

3. Remove the I/O-video board plastic bezel by removing the two screws
that hold the bezel in place (Figure 5-37). Save the bezel to install on
the new I/O-video board.
NOTE

The I/O bezel contains the system unit serial number. You must use
this bezel on the new I/O-video board.
4. Separate the I/O-Video board from the power supply board.

LJ-0943

Figure 5-37

Removing the I/O-Video Board Bezel

5-47

IIIII FRU Replacement
5. Remove the metal IjO-video board shield as follows. You must also
install the shield on thenew IjO-video board.
a. Remove the two connectors from the shield.
CAUTION
Be careful not to pull the wires off the board.

b. Remove the screw (Figure 5-38).

LJ-0944

Figure 5-38

5-48

Removing the I/O-Video Board Shield

FRU Replacement

IIIII

5.3.22 I/O-Video Board Installation
1. Install the old plastic bezel on the new I/O-video board.
2. Install the old metal I/O-video board shield on the new I/O-video board.
3. Attach the I/O-video board to the power supply board by inserting the
five mounting screws.
4. Attach the CPU board to the I/O-video and power supply board assembly.
5. Place the 3-board assembly into the system unit.
6. Attach the monitor board. You might have to slightly lift up the 3-board
assembly.
7. Connect the following cables.
a. 4-wire power cable to the power supply board
b. Ribbon cable to the I/O-video board
c. CPU ground wire to the top of diskette drive assembly
d. Speaker cable to the CPU board
e. Power LED cable to the CPU board
f. Power supply ground wire to the CRT shield
8. Insert the screw that secures the monitor board to the CRT shield.
9. Tighten the captive hold-down screw at the L-bracket at the bottom right
of the CPU board.
10. Install the plastic dress bezel to the CPU board by tightening its two
captive screws.
11. Reinstall the cover and the back door on to the system unit.

5-49

11111 FRUReplacement

5.3.23 Power Supply Board Replacement
1. Do steps 1 through 13 of the CPU board removal procedure (Paragraph
5.3.17).
2. Remove the five mounting screws from the power supply board (Figure
5-36).
3. Separate the power supply board from the IjO-video board.
4. Attach the new power supply board to the I/O-video board by reversing
the removal procedures.

5.3.24 Expansion Box Cover Removal
1. Remove all external cables (Paragraph 5.3.1).
2. Separate the expansion box from the system unit (Paragraph 5.3.2).
3. Release the cover lock and lift up the front edge of the cover. Then, lift
the cover straight up (Figure 5-39).
To replace the cover, make sure no expansion box wires or cables are hanging
outside the expansion box. Then, lower the back corners of the cover into the
back corners of the expansion box base. Make sure the corners are seated
correctly, then lower the cover in place.

5-50

FRU Replacement

IIIII

LJ ·0819

Figure 5-39

Removing the Expansion Box Cover

5·51

11111 FRU Replacement

5.3.25 Hard Disk Drive Removal
The hard disk drive is fragile - handle it carefully. Always try replacing the
hard disk drive read/write board before you replace the entire hard disk drive.
If the replacement drive has a skid plate attached to it, remove the skid plate
(screws and spacers) and attach it to the defective drive.
NOTE

If the expansion box contains a fan assembly refer to Paragraph

5.3.26 for removal procedures.
1. Use the Service Diagnostics to park the drive head (Individual Test num-

ber 18, Park All Drives).
2. Remove all external cables (Paragraph 5.3.1).
3. Separate the system unit from the expansion box (Paragraph 5.3.2).
4. Remove the expansion box cover (Paragraph 5.3.24).
5. Disconnect the two flat gray cables from the hard disk drive controller
board (Figure 5-40).
6. Remove the 4-wire power connector from the hard disk drive.
7. Remove the four screws from the drive base plate (Figure 5-40) and
continue with Paragraph 5.3.27.

5-52

FRU Replacement

IIIII

FLAT GR,AY CABLES
HARD DISK DRIVE

Figure 5-40 Hard Disk

Drive Cabl
.
es and Screws

u.""

5-53

IIIII FRU Replacement
5.3.26 Hard Disk Drive Removal with Fan Present
The hard disk drive is fragile - handle it carefully.
1. Use the Service Diagnostics to park the drive head (Individual Test number 18, Park All Drives).
2. Remove all external cables (Paragraph 5.3.1).
3. Separate the system unit from the expansion box (Paragraph 5.3.2).
4. Remove the expansion box cover (Paragraph 5.3.24).
5. Disconnect the two signal cables from the hard disk drive controller
board (Figure 5-41)
CAPTIVE SCREW

Figure 5-41 Hard Disk Drive Removal with Fan Present

5-54

FRU Replacement

IIIII

6. Disconnect the 4-wire power connector from the hard disk drive.
7. Disconnect the ground wire from the hard disk drive and from the base
plate.
8. Disconnect the 2-wire fan power connector from the power regulator fan
connector.
9. Remove the fan assembly by removing one flat-head screw and loosening
a captive screw and lifting the fan assembly straight up. This procedure
exposes a flat head screw that secures the drive base plate to the
expansion box.
10. Remove the flat head screw and three other screws from the drive base
plate.
11. Remove the barrier between the hard disk drive and the power regulator.
12. Remove the two signal cable from the hard disk drive.
CAUTION

The hard disk drive is fragile - handle it carefully to avoid media
damage.
13. Remove the hard disk drive assembly and place it on a work surface with
the drive base plate facing up.

5-55

11111 FRU Replacement

5.3.27 Hard Disk Drive Base Plate Removal
Remove the drive base plate as follows.
1. Carefully place the drive upside down on a grounded work surface.

2. Disconnect the two flat or round gray cables from the hard disk drive.
3. Remove the four shock mounting screws (Figure 5-42). Set the base plate
aside to install on the new drive.

SHOULDER SCREW

LJ-1432

Figure 5-42

5-56

Removing Base Plate

FRU Replacement

11111

5.3.28 Read/Write Board Removal from the Hard Disk
Remove the read/write board if the customer has data on the hard disk that
cannot be retrieved. Install the read/write board on the new hard disk drive.
1. Do steps 1 through 7 of the hard disk drive removal procedure (Paragraph 5.3.25) or steps 1 though 12 of the hard disk drive removal with
fan present (Paragraph 5.3.26).
2. Remove the hard disk drive base plate (Paragraph 5.3.27).
3. Remove the three screws and insulating washer from the read/write board
(Figure 5-43).
CAUTION

Make sure you remove the read/write board washers. A washer
accidentally dropped in the disk drive can damage the drive.
SCREWS AND WASHERS

Figure 5-43

Read/Write Board Screws and Washers

5-57

11111 FRU Replacement

4. Remove connectors 1 and 2 from the bottom of the read/write board as
follows.
CAUTION

The connectors are attached to lead wires. Pulling the read/write
board straight up can damage the wires.
a. Firmly hold the disk drive with one hand.
b. Gently lift the side of the read/write board about 1/2 inch.
c. Use your fingers to remove connector 1 and then connector 2. Do not
use a metal tool.
5. Lift the board as shown in Figure 5-44 and then remove connector 3
(Figure 5 -4 5 ) .

CONNECTOR

3
CONNECTOR

CONNECTOR

LJ·Q695A

Figure 5-44 Removing Connectors 1 and 2

5-58

FRU Replacement

IIIII

NOT USED

(

CONNECTOR
3

LJ·0696A

Figure 5-45

Removing Connector 3

5.3.29 Read/Write Board Installation
1. Attach connector 3 to the read/write board.
NOTE

Make sure the pair of pins next to the LED are exposed (Figure
5-45).
2. Hold the hard disk drive firmly, lower the read/write board and carefully
install connector 2 and then connector 1.
3. Install the read/write board.
CAUTION

Remember to install the read/write board insulating washers.

5-59

IIIII FRU Replacement
4. Make sure the jumper clip is set to drive select 1 (Figure 5-46).
5. Install the hard disk drive (Paragraph 5.3.31).

·~~::;::::::--"""""I~CD ® ® CD ® ® ® ®

~
"\.~(
<f,.,

~ ~

® f4\ 0 ® tJOI@2 ~~
\v\v

~r£

DRIVE SELECT 1

LJ-0697A

Figure 5-46 Jumper Setting for Drive Select

5-60

FRU Replacement

IIIII

5.3.30 Removing Skid Plate from New Hard Disk
Before you install a replacement hard disk drive, you must remove the skid
plate from the new drive. Remove the hard disk drive skid plate as follows.
CAUTION

The hard disk drive is fragile - handle it carefully to avoid media
damage.
1. Remove the four screws and four standoffs that secure the skid plate to
the hard disk drive that is being installed (Figure 5-47).
2. Attach the skid plate to the defective hard disk drive for shipment to the
repair facility.

W-1473

Figure 5-47 Removing Skid Plate

5-61

11111 FRU Replacement

5.3.31 Hard Disk Drive Installation
The hard disk drive is fragile - handle it carefully. If the replacement drive
has a skid plate attached to it, you must remove this skid plate (screws and
spacers) and attach it to the effective drive (Paragraph 5.3.30).
1. Secure the base plate removed from the original drive to the drive being
installed with four shock mounting screws. Carefully turn the screws
clockwise just until they touch the drive chassis (Figure 5-48).
2. Make sure the jumper clip on the replacement drive is set to drive select
1 (Figure 5-46).
3. Connect the two flat or round gray signal cables to the hard disk drive.
SHOULDER SCREW

+
I
I

Figure 5-48

Replacing Base Plate

4. If a fan is present, secure the barrier (part number 74-35037) to the
base plate with the two captive screws (Figure 5-49)
5. Secure the hard disk drive assembly to the expansion box using three
6- 32 X 0.125 pan screws and one 6-32 X 0.125 flat head screw.

5-62

FRU Replacement 11111

6. Connect the power cable to the drive.
7. Route the two signal cables and the power cable along the barrier (if
present), and connect the signal cables to the hard disk drive controller
board and the power cable to the power regulator (Figure 5-49).

Figure 5-49 Hard Disk Drive Installation

8. If present, connect the ground wires from the power regulator ground
stud to the hard disk drive ground stud and to the chassis ground.
9. If present, install the fan assembly and connect the 2-wire fan power
connector to the power regulator fan connector.
10. Install the expansion box cover (reverse Paragraph 5.3.24). Make sure no
cables, other than option board cables, are hanging outside the expansion
box, otherwise the cover will not close.

5-63

IIIII FRU Replacement
5.3.32 Gaining Access to the Expansion Box Card Cage
You must position the card cage on its side so you can remove the controller
board and option boards.
1. Remove all external cables (Paragraph 5.3.1).

2. Separate the expansion box from the system unit (Paragraph 5.3.2).
3. Remove the expansion box cover (Paragraph 5.3.24).
4. Unplug the battery cable (Figure 5-50).
5. Disconnect the two signal cables from the hard disk drive controller
board (Figure 5-50).
6. Tip the card cage on its side.

BATTERY
CABLE

Figure 5-50

5-64

Gaining Access to the Card Cage

FRU Replacement

IIIII

5.3.33 Hard Disk Controller Replacement
1. Gain access to the expansion box card cage (Paragraph 5.3.32).

2. Remove the three restraining screws that hold the controller board to the
card cage.
3. Pull out the controller board (Figure 5-51).

LJ·0945

Figure 5-51

Removing Hard Disk Controller

4. Install the new hard disk controller board as follows.
a. Slide the board along the groove in to the cage.
b. Make sure the controller edge connector plugs firmly into the card
cage backplane.
c. Install the three restraining screws that hold the controller board to
the card cage.
d. Connect the two signal cables to the hard disk drive controller board.
e. Install the expansion box cover (Paragraph 5.3.24). Make sure there
are no cables hanging outside the expansion box.

5-65

IIIII FRU Replacement
5.3.34 Option Replacement in the Expansion Box
1. Gain access to the expansion box card cage (Paragraph 5.3.32)
2. Remove any option board cable, if present (Figure 5-52).
3. Remove the option board restraining screw (Figure 5-52).
4. Remove the option board (Figure 5-52).
5. Install the new option board.
6. Connect any option board cable, if present.
NOTE

When you install an option board in the expansion box, make sure
the jumper on the modem board is configured correctly. The
jumper must connect pins 1 and 2. (See Figure 5 -11.)

OPTION
BOARD
CABLE

LJ-0821A

Figure 5-52 Removing Option Board

5-66

FRU Replacement

5.3.35

IIIII

Option Backplane Replacement

l. Gain access to the expansion box card cage (Paragraph 5.3.32).

2. Remove the hard disk controller board (Paragraph 5.3.33).
3. Remove any option boards present in the card cage (Paragraph 5.3.34).
4. Remove the battery cable from its restraining tabs on the card cage.
5. Remove the four backplane holding screws (Figure 5-53) and remove the
back shield from the card cage.
NOTE

Note the position of the small metal strip that has tabs to ground
options installed in the backplane. On reassembly, the tabs do not
touch the backplane. They are 135 away from the back of the
backplane.
0

Figure 5-53

Removing Backplane

5-67

IIIII FRU Replacement
6. Unplug the power regulator cable from the backplane.
7. Install the new option backplane.
8. After reassembling the backplane and expansion box, place the system
unit on top and connect all cables. Then, toggle the power switch and
run the Extended Self-Test (Paragraph 2.24).

5.3.36 Expansion Box Fan Replacement
1. Remove all external cables (Paragraph 5.3.1).

2. Separate the expansion box from the system unit (Paragraph 5.3.2).
3. Remove the expansion box cover (Paragraph 5.3.24).
4. Disconnect the 2-wire fan power connector from the power regulator
connector.
5. Remove the fan assembly by removing one flat head screw and loosening
a captive screw. Lift the fan assembly straight up (Figure 5-54).
6. Remove the fan from the fan assembly by removing the four restraining
screws.

5-68

FRU Replacement 11111

FLAT ~HEAD SCREW

CAPTIVE
SCREW

J 1

l.J

14 J 0 ,\

Figure 5-54 Removing Fan

5-69

11111 FRU Replacement

5.3.37 Expansion Box Power Connector and Bridge Replacement
Replace the power connector if the pins are bent or damaged, as follows.
1. Remove all external cables (Paragraph 5.3.1).
2. Separate the expansion box from the system unit (Paragraph 5.3.2).
3. Remove the expansion box cover (Paragraph 5.3.24).
4. Remove the screw that holds the bridge to the center of the power regulator (Figure 5-55).
5. Remove the two white ceramic resistors from the bridge. (If present, cut
any tie wraps.)
6. Unplug the power connector cable from the bottom of the bridge.
7. If pins are bent or damaged, use a flat-blade screwdriver to push against
the power connector so it falls out of its housing.
8. Install a new power connector, making sure the single pin is toward the
outside near the screw hole.
9. Install the bridge; be sure to install the white ceramic resistors in the
. bridge and secure with tie wraps if any were removed. The bridge is the
heat sink for the resistors.

5-70

FRU Replacement 11111

CENTER
HOLDING
SCREW

POWER CONNECTOR

t-----BRIDGE

LJ-0948B

Figure 5-55 Removing Bridge and Power Connector

5-71

IIIII

FRU Replacement

5.3.38 Expansion Box Power Regulator Replacement
The power regulator board is labeled EXP BOX POWER SUPPLY in the expansion box.
1. Remove the expansion box power connector bridge (Paragraph 5.3. 37) .
2. Unplug the fan power cable connector (Figure 5-56) if present.
3. Unplug the two signal cables from the hard disk controller board.
4. Unplug any option cables.
5. Unplug the battery cable connector.
6. Tip the card cage on its side.
7. Remove the following screws and cables from the power regulator board
(Figure 5-56).
Flat black cable
4-wire power cable
Four mounting screws
8. Remove the power regulator board.
9. Install the new power regulator board. Make sure to install the two
white resistors in the bridge; add a tie wrap to secure them if one was
removed.

5-72

FRU Replacement \\\\\

FAN POWER CABLE
CENTER
HOLDING
SCREW

_::=

LJ 0948A

Figure 5-56

Power Regulator Board

5-73

IIIII FRU Replacement
5.3.39 Battery Replacement
1. Open the expansion box (Paragraph 5.3.24).

2. Disconnect the battery cable connector (Figure 5-57).
3. Remove the screw from the battery enclosure.
4. Remove the battery enclosure.
5. Remove the batteries.
WARNING
Do not dispose of the batteries at the customer site. Do not burn
the batteries and do not take them apart.

6. Replace the batteries. Remember to reconnect the battery cable.

LJ-0931

Figure 5-57 Replacing Battery

5-74

FRU Replacement

IIIII

5.3.40 Keyboard Replacement
1. Disconnect the keyboard cable from the system unit.
2. Connect the keyboard cable of the new keyboard to the system unit.

5.3.41 Mouse Replacement
1. Disconnect the mouse cable from the system unit.
2. Connect the mouse cable of the new mouse to the system unit.
Periodic cleaning of the mouse wheel with water prevents lint and gum
buildup (Figure 5-58).

Figure 5-58 Mouse Cleaning

5-75

Appendix A
Part Numbers

The parts and part numbers for the VAXmate Workstation and ThinWire network are listed in this appendix.
Table A-I VAXmate Workstation Recommended Spares
Table A-2 Printer Components
Table A-3 Base System
Table A-4 Networking Components
Table A-5 Country Specific Components

A-I

IIIII Part Numbers
Table A-I

VAXmate Workstation Recommended Spares

Description

Part Number

Workstation
New CPU and grounding kit, which include:

PC500-UA

- New CPU board

54-17187

- Ground strap (braided)

70-24726-01

- Thermal shield

70-24727-01

CPU board (old board with no ground wire)

54-16847-01

I/O-Video board

70-23297-01

Monitor board

54-16828-01

CRT/yoke, bezel assembly (green)

70-23300-01

CRT/yoke, bezel assembly (amber)

70-23300-02

Power supply board (120 V 60 Hz)

54-16861-01

Power supply board (240 V 50 Hz)

54-16861-02

Diskette drive (RX33-A)

RX33-A

Cable assembly

70-23308-01

LED/cable assembly

17-01190-01

RX power cable

17-00342-03

RX data cable

17-01187-01

CRT harness assembly

70-23307-01

Keyboard (U.S. version)

LK250-xx

Mouse (30-25322-01)

VSXXX-xx

Power cord (U.S. version)

17-00606-02

2 Mbyte memory option board (PC50X-AA)

54-16853-AF

Modem board option (U.S. and Canada only) (PC50X-MA)

54-16881-01

Math coprocessor option (80287)

FP287

Local Area Network (LAN) cable

1 7 -0 124 1-0 1

Fuse (120 V)

90-07999-00

Fuse (240 V)

12-23192-08

Front bezel assy (diskette drive door and front LED)

70-23298-01

Speaker

70-23308-01

A-2

Part Numbers

Table A-I

IIIII

VAXmate Workstation Recommended Spares (cont.)

Description

Part Number

Expansion Box
RD31 hard disk drive (20 Mbyte)

RD31-EA

RD32 hard disk drive (40 Mbyte)

RD32-A

RCD 3 1-E hard disk drive controller board

RCD31-E

RD data cable (20 pin), round

17-01577-01

RD data cable (34 pin), round

17-01578-01

RD power cable (4 pin)

17-00342-10

Power regulator, 47 watt

H7271-00

Option backplane assembly

54-16849-01

Backplane cable, 13 conductor

17-01189·01

Lithium battery/cable assembly, 6V (pair)

12-25512-01

Expansion Box Power Connector

12-25671-01

Fan bracket assembly"

70-24499-01

Ground wire, 18 gao black"

70-24502-01

Special Tools and Test Components
Metric tape measure

29-25342-00

Anode discharge tool

29-24717-00

25-pin D-Sub loopback connector (for communications port)

12-15336-06

MMJ loopback connector (for printer port)

12-25083-01

Mouse loopback connector (for mouse port)

12-25628-01

BNC T-connector

12-25534-01

BNC terminator, 50 ohm

12-25535-01

Barrel connector

12-25567-01

• Part is for -FA, -Fe versions only.

A-3

11111 Part Numbers

Table A-2

Printer Components

Description

Part Number

Printer option (LA75)

LA75-A2

LA75 printer cable

BCI6E-xx

LA75 printer cable (shielded for Germany)

17-01364-01

Table A-3

Base System

Description

Part Number

System Unit with power supply and green or
amber CRT - country specific

PC500-xx

Keyboard - country specific

LK250-xx

Power cord - country specific

BN19x-xx

Mouse

VSXXX-AA

ThinWire LAN cable assembly kit that consists of:

PC50X-CB

Cable
T-connector
Terminator (50 ohm)
VAXmate User Handbook (country specific)

Blank diskette

A-4

RX33K-Ol

Part Numbers 11111

Table A-4

Networking Components

Description

Part Number

Local Area Network (LAN) cable

17-01241-01

ThinWire cable, PVC (6 feet)

BCI6M-06jDA

ThinWire cable, PVC (1 5 feet)

BCI6M-15jDA

ThinWire cable, PVC (30 feet)

BCI6M-30jDA

ThinWire cable, PVC (1000 feet spool)

H8243-AjDA

ThinWire cable, TeflonTM (1000 feet spool)

H8244-AjDA

ThinWire Ethernet male coaxial connector (BNC)

H8222jDA

ThinWire Ethernet T-connector

12-25534-01

ThinWire Ethernet barrel connector

H8224jDA

ThinWire Ethernet terminator (50 ohm)

12-25535-01

ThinWire Ethernet installation kit

H8242jDA

DIGITAL ThinWire Ethernet station adapter

DESTA-AAjDA

DIGITAL ThinWire Ethernet multiport repeater

DEMPR-AAjDA

A-5

IIIII Part Numbers
Table A-5

Country Specific Components

Country

Keyboard

Power
Cord

U.S.

LK2S0-AA

BNI9P-IK

Canada

LK2S0-AA

BNI9P-IK

English speaking
LK2S0-AA
outside North America

BNI9A-2E

French

BNI9C-2E

German

French Canada

LK2S0-AP

LK2S0-AG

LK2S0-AC

Canada
(bilingual)

LK2S0-ED

Italy

LK2S0-AI

French Swiss

German Swiss

Finland

Denmark

Norway

Sweden

Israel

Australia/
New Zealand

A-6

LK2S0-AK

LK2S0-AL

LK2S0-AF

LK2S0-AD

LK2S0-AN

LK2S0-AM

LK2S0-AT

LK2S0-AA

BNI9C-2E

BNI9P-IK

BNI9M-2E

BNI9E-2E

BNI9C-2E

BNI9K-2E

BNI9C-2E

BNI9U-2E

BNI9H-2E

DIGITAL
Power Cord
Part Number
17-00606-02

17-00606-02

17-00209-08

17-00199-12

17-00606-02

17-00364-08

17-00210-0S

17-00199-12

17-00310-0S

17-00199-12

17-004S7-08

17-00198-07

System
Unit

CRT
CRT
Green Amber

PCSOO-BA
PCSOO-CA

PCSOO-BQ
PCSOO-CQ

PCSOO-BE
PCSOO-CE

PCSOO-BP
PCSOO-CP

PCSOO-BG
PCSOO-CG

PCS00-BC
PCSOO-CC

PCSOO-FD
PCSOO-GD

PCSOO-BI
PCSOO-CI

PCSOO-BK
PCSOO-CK

PCSOO-BL
PCSOO-CL

PCSOO-BF
PCSOO-CF

PCSOO-BD
PCSOO-CD

PCSOO-BN
PCSOO-CN

PCSOO-BM
PCSOO-CM

PCSOO-BT
PCSOO-CT

PCSOO-BZ
PCSOO-CZ

AppendixB
Test Descriptions

B.1 Introduction
This Appendix lists all the Service Diagnostic tests. The tests are listed in the
same order as they appear on the Individual Test menu. The system test
mode runs a subset of the individual tests - not all the hardware is tested.
Many of the individual tests are interactive. The tests vary in length from
several seconds to 25 minutes. The longest tests are as follows.
01 Memory
02 Comm
06 Printer
07 Mouse
08 Event Timer
14 Option Memory
15 System Interaction
19 Local Network Link
The system test is not interactive, however, you must install the loopback
connectors before running the test.

B-l

IIIII Test Descriptions
01 MEMORY TEST

This test checks the 1 Mbyte of memory on the CPU board. The memory
consists of two memory modes: real (768 Kbytes) and protected (256
Kbytes). For both the real and protected memory, the memory test does the
following.
• Verifies the parity generator circuitry and nonmaskable interrupt (NMI)
circuitry.
• Functionally tests the dynamic memory by using the moving inversions
algorithm.
• Verifies that each location can generate parity.
• Verifies address line A20, the selectable address. If the A20 test is
unsuccessful, the remaining protected mode tests are discontinued.
During part of the test, there is no screen activity. This occurs when the test,
operating system, and other resident code are moved to a different location in
memory so that all memory can he tested.
02 COMM PORT TEST

This test offers internal or external testing of the communications port. External testing requires the communications port loopback connector. Both internal and external testing check that the communications port can:
• Loop back all signals off board (external test only).
• Generate all four types of interrupts: modem status, transmit empty,
receive available, receiver line status.
• Detect all types of error conditions.
• Detect and force all parity conditions.
• Transmit and receive at all specified baud rates (timed) from 50 to
19200.
• Transmit and receive all combinations of data sizes, stop bits, using 256
characters for individual test mode, and only 10 characters for system
test mode.
• Verify split baud.
In system test mode, only external testing is performed. Testing starts at 1200
baud.

B-2

Test Descriptions 11111

03 VIDEO TEST

This test checks the following functions.
• Display memory and font RAM using a moving inversion algorithm.
• Video modes not supported by BIOS. The IRGB (intensity, red, green,
blue) data is compared to known values. IRGB values translate to shades
of gray.
• The functionality of the video gate array and memory mapping.
• Reading from and writing to the diskette to verify the functionality of
the video gate array and video bus arbitration circuitry.
The video test requires that you use the formatted high density scratch diskette provided in the Maintenance Kit during specific tests. Some of the
subtests prompt you for visual verification.
The video test is not performed if a video option (or graphics board) is
detected in the expansion box. An error is logged, however. To run the video
test, remove the video option from the expansion box.
To test the monitor board, display the video alignment patterns in test number 13.
04 DISKETTE DRIVE TEST

This test writes to the diskette. Make sure to use the high-density formatted
scratch diskette included in the Maintenance Kit. The diskette drive test:
• Verifies the operation of the diskette drive and all associated circuitry
on the I/O board.
• Checks the mechanical performance of the drive.
• Checks the discrete functions of the diskette controller.
• Checks the ability of the diskette drive subsystem to function correctly
as an integral part of the VAXmate system.
• Performs read/write tests on a scratch diskette

B-3

IIIII Test Descriptions
This test requires either the formatted high- or low-density scratch diskette,
included in the Maintenance Kit, depending on which media you want to
test. The test prompts you when to change diskettes. During the test, the
abbreviation FDC (floppy disk controller) displays on the screen.
A large number of soft errors shown in the error log can indicate a performance problem. Make sure the heads are clean and the diskette has no errors.
05 SPEAKER TEST

The speaker tests check the speaker and speaker driver circuit. Many of the
tests produce audio tones that you must verify are correct. Some of the tests
are quite loud. If XXXXXX is displayed during this test, you must decide if
the test passed or failed.
06 PRINTER PORT TEST

This test offers internal or external testing of the printer port. External testing requires the printer port loopback connector. Both internal and external
testing check that the printer port can:
• Loop back all signals off board (external test only).
• Generate all four types of interrupts: printer status, transmit empty,
receive available, and receiver line status.
• Detect all types of error conditions.
• Detect and force all parity conditions.
• Transmit and receive at all specified baud rates (timed) from 50 to
19200.
• Transmit and receive all combinations of data sizes, stop bits, using 256
characters for individual test mode, and only 10 characters for system
test mode.
In system test mode, only external testing is performed. Testing starts at
1200 baud. If an 8250 fault occurs, this test may loop on itself. Obtain a new
version of the diagnostic and retest.

B-4

IIIII

Test Descriptions

07 MOUSE TEST

This test checks:
• The circuitry on the CPU board relating to communication with the
mouse. This includes UART baud rates in either internal or external
loopback mode, interrupt capability, and internal registers.
• The functionality of the DIGITAL standard mouse. This includes mouse
self test, mouse communications, button tests, and a functional position
test. The functional position test is skipped if a video option is detected
in the expansion box. Remove the option to run the test.
You are prompted to use the mouse or mouse loopback connector. Choose
either of these if you select continuous pass testing.
Non-DIGITAL mice are not tested.
In system test mode, only external testing is performed. Testing starts at
1200 baud.
08 EVENT TIMER TEST

This test verifies the CMOS RAM and the functionality of the event counters.
When the test is complete, the date and time are not valid. Therefore it is
necessary to reset the date and time. The goal of the tests is to make sure the
event timer can:
• Keep precise time.
• Interrupt every second (when the counter update occurs).
• Periodically interrupt at all selectable time intervals.
• Interrupt when an alarm condition is detected.
• Count seconds, minutes, hours, days of the week, date, month and year.
• Represent time, calendar, and alarm in binary or BCD.
• Keep a 12- or 24-hour clock; a.m. and p.m. are in 12-hour mode.
• Change to daylight savings time.
• Recognize the end of the month.
• Compensate for leap year.

B-5

IIIII Test Descriptions
09 NETWORK TESTS

The network tests check the VAXmate Ethernet logic circuitry and also test
the ThinWire cable for opens and correct termination. You can also test the
cable and its connectors for shorts, however, you do not need to run the
Service Diagnostics for this. Follow these steps to run the network tests.
1. Test the VAXmate Ethernet logic circuitry as follows.
a. Plug in the network pott loopback connector as shown in Figure B-1,
example 1. Make sure there is a 50-ohm terminator at each arm of
the T-connector. To assemble the network pott loopback connector
see Figure 2-15 in Chapter 2.
b. Run test 09.
2. Test the ThinWire cable for opens and for correct termination as
follows.
a. Configure the VAXmate workstation as shown in Figure B-1, example
2.
b. Run test 09.
3. Test the ThinWire cable and the T-connectors for shotts as follows. You
need an ohmmeter with a times 1 scale.
a. Assemble the cable and connectors as shown in Figure B-1, example
3. Figure B-1 shows a 50-ohm terminator at each end. However, you
can also test with just one terminator.
b. Connect the ohmmeter at the points shown. The ohmmeter reading
should be as follows:
25 ohms if there is a terminator at each end
50 ohms if there is a terminator at one end only
c. If you do not get one of these values, run the test again with a
different cable. Replace the cable or T-connectors, depending on the
results of the ohmmeter test.

B-6

Test Descriptions 11111
EXAMPLE 1 TESTING VAXmate ETHERNET LOGIC CIRCUITRY

\~5====~
T-CONNECTO R

TE RMI NATOR

EXAMPLE 3 TESTING FOR SHORTS

T-CONNECTOR

----::::::::::::::===~ F==~rn~~~Tro"
T-CONNECTOR

Figure B-1

Network Test Configurations Examples 1, 2, and 3

B-7

IIIII Test Descriptions
1080287 TESTS
The first test checks for the presence of the math coprocessor (80287). If the
80287 coprocessor is not found, or does not respond correctly, a message
displays and testing is discontinued. If the 80287 coprocessor is found, its
ability to do the following is tested.
• Generate an interrupt
• Access memory and communicate with the 80286
• Control its internal stack
• Read and write all stack and environment re~isters
• Generate exceptions
• Support data types
• Execute a subset of its instruction set
11 KEYBOARD TEST
Many of the keyboard tests are interactive. To terminate many of the interactive subtests press the ALT/FI0 keys. This test checks the following.
• Keyboard interface processor and its interrupt capability.
• Industry-standard and DIGITAL extended and reserved commands.
• The four keyboard LEDs. The LEDs are initially off. You are prompted to
type a key to turn on the LEDs.
• The four volume levels of keyclicks. A keyclick is sent to the keyboard
speaker when you type a key. The clicks increase in volume as you continue to press keys.
• Autorepeat rate timing.
• Autorepeat delay timing. This tests all possible delay rates (250, 500,
750, or 1000 msec).
• Key functionality. A picture of the keyboard is displayed on the screen
and you press keys to make sure they are functioning.

B-8

IIIII

Test Descriptions

12 PRINTER CONFIDENCE TEST

This checks the functionality of the printer, if present. First the required
configuration of the printer is displayed, then a menu is displayed from
which you can choose text entry, default message, or last message printed.
If you choose text entry, the screen clears so you can type in your text. To

stop text entry and send this text to the printer, press the FlO key. Selecting
either of the other options causes the selected text to be immediately
printed. Use the number keys to sel~ct menu items.

13 VIDEO ALIGNMENT PATTERNS
The video alignment patterns are for the monitor subsystem adjustments.
There is a menu from which you can select each pattern. Refer to chapter 4,
Monitor Adjustments. Press the FlO key to exit the video alignment patterns.
Visually verify that all the video alignment patterns produce a stable display.
If any of the patterns do not look correctly displayed, there may be a problem with the monitor board.
The patterns are as follows. (These are not displayed if a non-VAXmate video
is present.)
Full screen intensity level 2 (blue)
Full screen intensity level 4 (red)
Full screen intensity level 8 (green)
Full screen intensity level 14 (white)
Intensity level 0 to 15 from left to right
Screen of E's with solid border (400 scan line mode)
Screen of E's with solid border (250 scan line mode)
Grid/Circle
14 OPTION MEMORY TEST

This test checks the DIGITAL 2 Mbyte memory option. The test performs:
• A functional check of the parity generator circuitry and NMI circuitry.
• A test of each memory location's ability to generate parity.
• A moving inversions pattern test on all option memory.
• A unique address test to verify that the full 2 Mbyte memory is
accessible.

B-9

IIIII Test Descriptions
15 SYSTEM INTERACTION TEST

This Test initiates several processes at the same time to create a worst case
condition for system operation. This test ensures that each hardware subsystem is being allocated the appropriate CPU time and completes its process
within a certain time. The system configuration is checked to determine what
processes may be started up on the system under test. The processes are
initiated in the following order.
Options (modem, 80287, and hard disk)
Main board (CPU, event timer, and mouse)
I/O board (communications, printer, diskette, and network)
The test begins by displaying the system configuration necessary for testing,
followed by a warning about diskette data being destroyed. All loopback connectors and a scratch diskette are needed for this test. The system Interaction
Execution Menu is then displayed. The menu lists each process with a
description of what that process does. The description is only present for
options that are found to be present. The word ACTIVE is displayed on the
screen for each process that is currently running. This ACTIVE indication
should be used to determine what hardware was currently running when an
error occurs, indicating what hardware was involved in the interaction problem. Note that testing stops after the first error is detected, since it is impossible to resume operation from the error.
A PROCESS PROGRESS error message indicates that one of the hardware subsystems did not receive the expected amount of CPU time. The intermediate
progress of all processes is checked about every 2 minutes. The test takes
about 10 minutes to complete.
You can abort the test by pressing the Ctrl and PF3 keys at the same time.
Note that since the keyboard is running a process of its own, you might get
an error attributed to breaking out of the test.
NOTE

Since many of the errors in this test are caused by the interaction of
one or more hardware subsystems, replacing the designated FRU may
not eliminate the problem. Therefore, it is up to the service
technician to judge what FRU or FRUs can be causing the problem.
The circuitry experiencing the interaction problem is listed in the
error description.

B-JO

Test Descriptions

IIIII

16 HARD DISK TEST

This test determines if a hard disk and hard disk controller are present. If
present, the tests check:
• Controller registers.
• Controller reset functions.
• Controller internal diagnostic function.
• Hard disk recalibration.
• Read-verify of the entire disk.
• Heads, cylinders, and sectors verification of entire media.
• Read/write functions on the disk diagnostic cylinders.
• Seek and motor speeds.
• Forced error conditions.
• Random seek.
If either the hard disk or controller is not present, a message and an error is

displayed. Testing is discontinued, and an error is also logged. When any error
condition is corrected by a retry, a 1650 code is reported.
17 MODEM TEST

This test determines if a DIGITAL-supported modem is present. If there is no
modem, or if the modem is not supported by DIGITAL, the modem tests are
discontinued and a message is displayed. If a DIGITAL-supported modem is
present, the following is tested.
• Registers
• Interrupts
• Data Transmission and reception at various baud rates, data bits and parity settings (the baud rates are timed)
• Modem command mode with internal self-test
There is an optional externalloopback test. This prompts you to make a telephone line modem connection to another VAXmate that has a known operational modem. The modem at the other VAXmate, called the remote modem,
must be set to 1200 baud and must also be set to autoanswer. Exiting this test
before it completes may leave the modem in a wrong state.

B-11

11111 Test Descriptions

18 PARK DRIVES

Always run this program when you want to move the system unit and, if
present, expansion box. This program does not test the drives, but places the
diskette drive head and hard disk drive head in position for transport. The
number of each drive is displayed and its passed/failed (parked/not parked)
status. If the drives pass, you are instructed to turn off the system and prepare
it for transport. If the drives fail, you are instructed to run the corresponding
diagnostics.
19 WCAL NETWORK LINK TEST (VAXmate to VAXmate)

This test exercises the network circuitry in a busy network traffic environment. As much activity as possible is created between two VAXmate workstations. A third VAXmate workstation can be added to increase network traffic.
See Figure B-2 to configure two VAXmate workstations.

50-OHM

TERMINATOR

Figure B-2

B-12

T·CONNECTQR

ThinWire CABLE

T-CONNECTOR

50-OHM
TERMINATOR

Local Network Link Test Configuration

Test Descriptions 11111

To add a third VAXmate workstation, see Chapter 3, Paragraph 3.5.4, Adding a
VAXmate Workstation to the Middle of a Segment. This test takes about 10
minutes per pass to run. It takes longer to run if more than two VAXmate
workstations are connected.
NOTE

These VAXmate systems must not be connected to any DEMPR or
DESTA.
To run this test, one VAXmate must be in echo mode, and the other(s) in
transmit mode. Run the Local Network Link Test as follows:
l. Start test 19 on all VAXmates.

2. Start the known good VAXmate in echo mode.
3. Select transmit mode on the remaining VAXmate(s).

The known good VAXmate system should be in echo mode; the system to be
tested should be a transmitter; and a third system can be introduced as a
transmitter. The test prompts you to choose the mode. When you choose echo
mode, the test displays the node address. You must type in this node address
on the VAXmates that are acting in transmit mode.
Shut down the test as follows.
1. Let the transmitter complete the selected number of passes.
2. Press the Ctrl and PF3 keys at the same time to stop echo mode from
running.

E-13

Appendix C
Error Numbers

Appendix C has error numbers, with FRUs and error messages, that can occur
during troubleshooting. The information is listed in four tables.
• Table C-I ROM Diagnostic Error Numbers - lists the 2-digit error numbers and corresponding FRUs to check or replace for the Power-Up test
and Extended Self-Test. Make sure to check the cables and connections
before you replace any FRUs. The expansion box runs off of the CPU
board and may cause CPU problems.
• Table C-2 Service Diagnostic Error Numbers - lists the 4-digit error numbers and the corresponding FRUs to check or replace for the Service
Diagnostic. Make sure to check the cables and connections before you
replace any FRUs.
• Table C-3 Install Diagnostic Error Messages - lists the error messages that
can occur during mode 3, Install New Diagnostics, of the Service Diagnostics. The corrective action follows the error message.
• Table C-4 System Error Messages - lists the messages that can occur at
any· time while using the Service Diagnostics.
Table C-l

ROM Diagnostics Error Numbers

Error
Number

FRU to Check
or Replace

CPU board
CPU board
CPU board

03
04
05

06
07
08

CPU board
CPU board
CPU board
CPU board
CPU board

Failing Test
Basic CPU board test
Memory tests
Memory parity test
Reserved
Unexpected interrupts
Unexpected NMIs (parity)
ROM checksum test
. Protected mode memory test
8042 tests

C-I

IIIII Error Numbers
Table C-l

ROM Diagnostics Error N~mbers (cont.)

Error
Number

FRD to Check
or Replace

Failing Test

09
OA
OB
OC
OD

CPU board
CPU board
CPU board
CPU board
CPU board

Refresh delay test (30 seconds)
Exception interrupt (protected mode)
Keyboard interrupt test
System status register test
Ethernet ROM checksum

10
12
13
14
15
16
17
18
19
lA

CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board

Timer tests
Master interrupt controller tests
DMA controller tests
Numeric processor extension tests (80287)
Mouse UART internal tests
Mouse UART external loopback tests
Slave interrupt controller tests
Event timer tests
Mouse interrupt test
Diskette DMA above 1 Mbyte test
Quick CPU shutdown circuitry test

20
21
22
23
24
25

I/O board
I/O board
I/O board
I/O board
I/O board
I/O board

26
27
28
29
2A
2B

I/O board

Printer port tests
Printer loopback tests
Communication port tests
Communication loop back tests
Diskette controller tests
Local Area Network Controller (LANCE) subsystem tests
LANCE interrupt not received
Reserved
LANCE unexpected interrupt test
LANCE external loopback test
Reserved
LANCE CRC check

30
31
32
33
34

I/O board
I/O board
I/O board
I/O board
I/O board

Video memory access, data path tests
Video memory tests
Video font tests
Text mode tests
Graphics mode tests

35
36
37
38
39
40
41
42

I/O board
I/O board
I/O board
I/O board
I/O board
Drive A
Drive A
Drive A

Video register tests
Video translation ROM tests
Horizontal/vertical synchronous tests
Color map tests (VLT)
Video RAM refresh/data retention test
Recalibrate tests
Step tests
Seek tests

C-2

I/O board
I/O board

Error Numbers 11111

Table C-l

ROM Diagnostics Error Numbers (cont.)

Error
Number

FRU to Check
or Replace

Failing Test

43
44
45
46

Drive A
Drive A
Drive A
Drive A

Motor speed test
Read test
Not ready
Seek with verify tests

50
51
52

Option memory
Option memory
Option memory

Parity tests
Basic tests
Unexpected NMI (nonmaskable interrupt)

Keyboard

Keyboard reset test

70
71
72
73
74

Hard disk controller
Hard disk controller
Hard disk controller
Hard disk controller
Hard disk controller

Interrupt/reset test
Controller not present test
Controller port tests
Internal diagnostics test
Initialization test

80
81
82
83
84
85
86
87
88

Hard disk drive 0
Hard disk drive 0
Hard disk drive 0
Hard disk drive 0
Hard disk drive 1
Hard disk drive 1
Hard disk drive 1
Hard disk drive 1

Reserved
Ready test
Recalibration test
Read test/unformatted drive
Extended read test
Ready test
Recalibration test
Read test/unformatted drive
Extended read test

93
94
95
96
97
98
99

Modem
Modem
Modem
Modem
Modem
Modem
Modem
Modem
Async card/modem

Reserved
Asynchronous port power-up reset test
Asynchronous port register test
Asynchronous interrupt test
Asynchronous parity test
Asynchronous baud test
Modem command test
Modem local analog loop and self-test
Modem ROM test
Modem jumpers need to disable diagnostic

AO
BO
CO
DO
EO
FO

Option 2
Option 3
Option 4
Option 5
Option 6
Option 7

Reserved for future option
Reserved for future option
Reserved for future option
Reserved for future option
Reserved for future option
Reserved for future option

90
91

NOTE

If you have installed a new option or disconnected the Expansion
Box, remember to set the power switch to off, wait 15 seconds, and
set the power switch to on, before running the Extended Self-Test.

C-3

IIIII

Error Numbers

Table C-2

Service Diagnostics Error Numbers

Error
Number

FRU to Check
or Replace

Description

NOTE

If the FRU to check or replace has a number after it, read the corresponding corrective
action at the bottom of the page.
MEMORY SUBSYSTEMS ERRORS
0100
0101
0102
0103

CPU board
CPU board
CPU board
CPU board

0104

CPU board

0105
0106

CPU board
CPU board

0107

CPU board

Parity generator not working properly
Memory location does not generate parity
Memory error during moving inversions test
Protected memory location does not generate
parity
Protected memory error during moving inversions
test
Protected memory exception interrupt occurred
Unexpected Nonmaskable Interrupt (NMI)
occurred
Address line A20 not working

COMMUNICATION SUBSYSTEM ERRORS
0200
0201

I/O board
I/O board

0202

I/O board

0203

I/O board

0204

I/O board

0205

I/O board

0206

I/O board l

0207
0208

I/O board
I/O board

0209

I/O board

Faulty bit(s) in communications internal register
Incorrect status received when trying to transmit
characters
Incorrect status received when trying to receive characters
No communication interrupt or incorrect interrupt
status received
Parity test, data transmitted does not equal data received
Parity test, an error condition occurred during a
transmit
Inability to loop back any signals off board (no
loopback plug)
Incorrect status received while transmit or receive
Baud rate test, timeout - character transfer never
completed
Baud rate test, timing of current baud rate was out of
spec

lCorrect the problem as follows.
1. Reseat the communication loopback connector.
2. If the error number is displayed again, replace the loopback connector.
3. If that does not solve the problem, replace the I/O board.

C-4

Error Numbers

Table C-2

IIIII

Service Diagnostics Error Numbers (cont.)

Error
Number

FRU to Check
or Replace

0210

I/O board

0211
0212
0213
0214

I/O board
I/O board!
I/O board
I/O board

Description
Baud rate test, data transmit does not equal data receive
Bad status received from modem status register
Some signal(s) unable to be looped back off board
Unable to clear pending characters or interrupts
Split baud circuitry failed

VIDEO SUBSYSTEM ERRORS
0300
0301
0302
0303
0304

None 2
I/O board
I/O board
I/O board
I/O board

0305
0306

I/O board
I/O board

0307
0308
0309
0310
0311
0312
0313

Diskette 3
I/O board
I/O board
I/O board 3
I/O board
I/O board 3
Diskette 3

0314
0315

I/O board
I/O board

Foreign video detected, skipping all video tests
Video screen RAM failure
Video font RAM failure
6845 not refreshing RAM or cell failure
DEC 4-color graphics mode: intensity, red, green,
and blue (IRGB) check failure
Video to video DMA transfer failed
DEC 16 color graphics mode: intensity, red, green,
and blue (IRGB) check failure
DOS error while accessing diskette
Diskette to video RAM DMA read failure
Diskette to video DMA data comparison error
Video to diskette DMA write error
Diskette to video DMA read failure
Diskette/video DMA read/write data compare error
BIOS error while doing diskette initialization function
Video look-up table RAM failure
Video gate array mapper failure

'correct the problem as follows.
1. Reseat the communication loopback connector.
2. If the error number is displayed again, replace the loopback connector.

3. If that does not solve the problem, replace the I/O board.
2Correct the problem by removing the non-DIGITAL video board.
3Correct the problem as follows.
1. Try another formatted high density diskette.
2. If the test does not pass, then run the diskette test.

3. If the diskette test passes, replace the 1/0 board.
C-5

IIIII

Error Numbers

Table C-2
Error
Number

Service Diagnostics Error Numbers (cont.)
FRU to Check
or Replace

Description

DISKETTE SUBSYSTEM ERRORS

0400
0401
0402
0403
0404
0405
0406
0407
0408
0409
0410
0411
0412
0413
0414
0415
0416
0417
0418
0419
0420
0421
0422
0423
0424
0425
0426
0427
0428
0429

I/O board
I/O board
I/O board
I/O board
I/O board
Diskette A
Diskette A
Diskette A
Diskette A
Diskette A4
Diskette A4
Diskette A4
Diskette A4
I/O board
Diskette A4
Diskette A4
Diskette A4
Diskette A4
Diskette A4
I/O board
Diskette A
Diskette A4
Diskette A4
Diskette A4
Diskette A4
Diskette A
I/O board
I/O board
I/O board

Diskette controller failure
Incorrect status returned by the FDC
Open or shorted data lines
DMA-Plliogic failure
Drive status register error
Diskette drive unable to recalibrate
Diskette drive unable to step off of track zero
Diskette drive step rate timing out of spec
Diskette drive rotational speed out of spec
Cyclic redundancy check (CRC) error
Unable to read media
Reserved
Soft error, media is write protected
Data write error
Soft error; FDC error detection logic failure
Soft error; unable to detect end-of-track
Soft error; unable to detect sector ID
Unable to find specified track
Incorrect status returned during scan test
Drive not ready
No interrupt generated by the FDC
Close drive door
Index pulse not toggling
Soft error, diskette data incorrect
Soft error, data over-run error
Control mark encountered
Drive A seek failure
FDC unable to detect deleted data
FDC unable to detect control mark
Soft error, no data bit set

4Correct the problem as follows.
1. Insett the diskette correctly.
2. If it is insetted correctly, try a different formatted high- or low-density
diskette.
3. If the error number is displayed again, use a new version of the diagnostic diskette.

4. If error still occurs, replace the FRU.

C-6

ErrorNumbers 11111
Table C-2
Error
Number

Service Diagnostics Error Numbers (cont.)
FRU to Check
or Replace

Description

SPEAKER SUBSYSTEM ERRORS
0500

CPU board

Timer 2 output not generating waveform

PRINTER SUBSYSTEM ERRORS
0600
0601

I/O board
I/O board

0602

I/O board

0603

I/O board

0604

I/O board

0605

I/O board

0606

I/O board

0607
0608

I/O board
I/O board

0609

I/O board

0610

I/O board

0611
0612
0613

I/O board
I/O board 5
I/O board

Faulty bites) in printer internal register
Incorrect status received when trying to transmit
characters
Incorrect status received when trying to receive characters
No printer interrupt or incorrect interrupt status received
Parity test, data transmitted does not equal data received
Parity test, during a transmit an error condition occurred
Inability to loop back any signals off board (no loop
back plug)
Incorrect status received during transmit or receive
Baud rate test, timeout - character transfer never
completed
Baud rate test, timing of the current baud rate was
out of spec
Baud rate test, data transmitted does not equal data
received
Bad status received from modem status register
Some signal(s) unable to be looped back off board
Unable to clear pending characters or interrupts

5Correct the problem as follows.
1. Reseat the printer loopback connector.
2. If the error number is displayed again, replace the loopback connector.
3. If that does not solve the problem, replace the I/O board.

C-7

IIIII

Error Numbers

Table C-2 Service Diagnostics Error Numbers (cont.)
Error
Number

FRU to Check
or Replace

Description

MOUSE SUBSYSTEM ERRORS6

0700
0701
0702
0703

CPU board or
connector
CPU board
CPU board
CPU board

0704
0705
0706
0707

CPU board
CPU board
CPU board
CPU board

0708

CPU board

0709
0710

CPU board
CPU board

0711
0712
0713
0714
0715
0716
0717
0718
0719

CPU board
Mouse
Mouse
Mouse
Mouse
Mouse
Mouse
Mouse
Mouse

Unable to verify loopback plug (use new diagnostic)
Mouse UART internal register error
No mouse UART interrupt occurred
Mouse UART external receive/transmit error, character corrupted
Master interrupt controller error
Slave interrupt controller error
Mouse UART external loop back status error
Mouse UART external receive/transmit error, character corrupted
Mouse UART external loopback timing out of range
(use new diagnostic)
Mouse UART internal loopback status error
Mouse UART internal receive/transmit error, character corrupted
Mouse UART external loopback timing out of range
Mouse does not respond to self-test command
Invalid self-test report format
Self-test detected RAM/ROM error
Self-test detected right button error
Self-test detected middle button error
Self-test detected left button error
Self-test and format revisions do not agree
Mouse does not respond to vendor reserved command

6Correct the problem as follows
1. Check the mouse cable connection.
2. Check with new version of diagnostic diskette.

3. If the error occurs again, replace the FRU.

C-B

Error Numbers

Table C-2
Error
Number

IIIII

Service Diagnostics Error Numbers (cont.)
FRU to Check
or Replace

Description

MOUSE SUBSYSTEM ERRORS 6

0720
0721
0722

Mouse
Mouse
Mouse

0723
0724
0725
0726
0727

Mouse
Mouse
Mouse
Mouse
Mouse

0728
0729

Mouse
Mouse

0730
0731
0732
0733
0734

Mouse
Mouse
Mouse
Mouse
Mouse

0735
0736
0737
0738
0739
0740

Mouse
Mouse
Mouse
CPU board
Mouse
Mouse

Mouse is not in Digital reporting format
Reported resolution is not 200 dots per inch
Mouse does not communicate using half-duplex protocol
Mouse does not respond to prompt command
Invalid prompt report format
Cannot set incremental stream reporting mode
Cannot set prompt reporting mode
Mouse does not ignore received parity or most significant bit
Received response to invalid command
Mouse changed reporting mode via invalid command
Mouse reported position change via invalid command
Right button generated no report
Middle button generated no report
Left button generated no report
No mouse position report generated in incremental
stream reporting mode
Mouse position report generated in prompt mode
Incremental stream reporting rate out of range
Mouse transmits more data than specified
UART status error
Counters did not change
Not all boxes changed

6Correct the problem as follows
1. Check the mouse cable connection.
2. Check with new version of diagnostic diskette.
3. If the error occurs again, replace the FRU.

e-9

IIIII

Error Numbers

Table C-2
Error
Number

Service Diagnostics Error Numbers (cont.)
FRU to Check or
Replace

Description

EVENT TIMER SUBSYSTEM ERRORS
0800
0801
0802
0803
0804
0805
0806
0807
0808

CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board
CPU board

CMOS address lines error
CMOS RAM error
CMOS RAM unable to retain its data
Event timer not counting seconds
Update cycle timing failed (also, see error 803)
Unable to stop counters via set bit
Counter operations failed
Update in progress cycle was too long
Periodic interrupt timing test failed

LAN SUBSYSTEM ERRORS
0900
0901

I/O board
I/O board

0902
0903
0904
0905
0906
0907
0908
0909

I/O board
I/O board
I/O board
I/O board
I/O board
I/O board 7
I/O board
I/O board

0910
0911
0912
0913
0914
0915
0916
0917
0918
0919
0920

I/O board
I/O board
I/O board
I/O board
I/O board
I/O board
I/O board
I/O board 7
I/O board
I/O board

Lance controller failure
Interrupt failure, LANCE tried to generate an interrupt
Open or shorted data lines
LANCE collision logic failure
LANCE transmit erro
LANCE receive error
Reserved (use new version of diagnostic)
LANCE externalloopback failure
Reserved
LANCE CRC logic failure
Loss of carrier signal during transmission
Loss of carrier signal, check cable connection
LANCE memory access error
LANCE packet data error
LANCE error detection logic failure
Transmission timeout
No interrupt generated by the LANCE
Attach the loopback plug
Loopback plug not connected
LANCE initialization failure
Logical Address filter logic failure

7 Correct the problem as follows.

1. Reseat the network loopback connector.
2. If the number is displayed again, replace loopback connector.
3. If that does not solve the problem, replace the I/O board.

C-IO

Error Numbers 11111
Table C-2
Error
Number

Service Diagnostics Error Numbers (cant.)
FRU to Check
or Replace

Description

80287 SUBSYSTEM ERRORS
1000
1001
1002
1003
1004
1005
1006

80287 8
80287
80287
80287
80287
80287
80287

1007
1008
1009

CPU
80287
80287

80287 bad or not detected, skipping all 80287 tests
Unexpected hot interrupt detected
Divide exception mask not functioning
Exception status incorrect
Memory access failure or data incorrect
Internal stack pointer failure
Unexpected interrupt on 80287 interrupt request
line (IRQ 13)
Slave interrupt controller error
Internal stack registers not unique
Internal stack register failure

1010
1011
1012
1013
1014
1015
1016
1017
1018
1019

80287
80287
80287
80287
80287
80287
80287
80287
80287
80287

Environment register failure
Exception mask failure
Exception did not generate interrupt
Status register failure
Condition codes incorrect
Busy bit not responding correctly
Exception pointers not generated correctly
Data type failure
Internal constants incorrect
Internal tag word incorrect

1020
1021
1022

80287
80287
80287

Transcendental instruction failure
Arithmetic instruction failure
Control instruction failure

8 Correct the problem as follows.

1. Make sure the 80287 is installed correctly.
2. If a number is displayed again, replace the 80287.
3. If the 80287 test fails again, replace the CPU board.

C-JJ

IIIII

Error Numbers

Table C-2
Error
Number

Service Diagnostics Error Numbers (cont.)
FRU to Check
or Replace

Description

KEYBOARD SUBSYSTEM ERRORS
1100
1101
1102
1103
1104

Keyboard9
Keyboard
Keyboard
Keyboard
Keyboard

Foreign or no keyboard detected
8042 status error, did not respond as expected
8042 to LK250 transmission error
LK250 to 8042 transmission error
LK250 to 8042 transmission parity error

1110
1120
1121

CPU board
CPU board
CPU board

8042 self-test error
No keyboard interrupt occurred
Master interrupt controller error

1130
1131
1132
1133

Keyboard
Keyboard
Keyboard
Keyboard

Illegal command failure
DEC Extended command failure
Compatible command failure
Reserved command failure

1160
1161
1162

Keyboard
Keyboard
Keyboard

Autorepeat rate timing out of range
Autorepeat enable failure
Autorepeat disable failure

1170
1171

Keyboard
Keyboard

Autorepeat delay timing out of range
Autorepeat enable failure

1180

Keyboard

Illegal scan code

9Correct the problem as follows_
1. Make sure a DIGITAL keyboard is connected to the VAXmate workstation.
2. Make sure the DIGITAL keyboard cable is firmly connected.
3. If the failure occurs again, replace the FRU.

C-12

Error Numbers 11111

Table C-2
Error
Number

Service Diagnostics Error Numbers (cont.)
FRU to Check
or Replace

Description

PRINTER CONFIDENCE SUBSYSTEM ERRORS
1200

Printer lO

Printer timeout

VIDEO ALIGNMENT SUBSYSTEM ERRORS
1300

None I I

Foreign video detected; cannot execute test

OPTIONAL MEMORY BOARD ERRORS
1400
1401
1402
1403
1404
1405

Optional memoryl2
Optional memory
Optional memory
Optional memory
Optional memory
Optional memory

1406

Optional memory

DIGITAL memory option board not detected
Option parity generator not working correctly
Option memory location does not generate parity
Option memory error during moving inversions test
Protected memory exception interrupt occurred
Unexpected nonmaskable interrupt (NMI) occurred
Option address test failure

IOCorrect the problem by making sure the printer is on-line.
1 1 Correct the problem by removing the non-DIGITAL video board.

12Correct the problem as follows.
1. Make sure the memory board is seated correctly.
2. If the failure occurs again, replace the memory board.

3. If the failure occurs once more, replace the I/O board.

C-13

IIIII Error Numbers
Table C-2
Error
Number

Service Diagnostics Error Numbers (cant.)
FRU to Check
or Replace

Description

SYSTEM INTERACTION ERRORS
NOTE

Since many of the errors in this test are caused by the interaction of one or more
hardware subsystems, replacing the designated FRU may not eliminate the problem.
Therefore, it is up to the Service Techncian to judge what FRU(s) can be causing the
problem. The circuitry experiencing the interaction problem is listed here.
1500
1501
1502
1503
1504
1505
1506
1507

CPU board
CPU board

1508
1509

CPU board
CPU board

1510
1511
1512
1513

CPU board
I/O board
I/O board
I/O board

1514
1515
1516
1517
1518
1519

I/O board
I/O board
I/O board
I/O board
I/O board
I/O board

1520
1521
1522

I/O board
I/O board
I/O board

1523
1524
1525
1526
1527
1528
1529

I/O board
I/O board
I/O board
Diskette
Diskette
Diskette
I/O board

C-14

CPU board
CPU board
CPU board
CPU board
CPU board

Event Timer: update cycles not functioning
Keyboard: does not accept command
Reserved
Event Timer: update interrupts out of range
Event Timer: not enough alarm interrupts occurred
Event Timer: lost track of time
Event Timer: undefined interrupt occurred
Mouse: DART received character not equal to transmitted character
Mouse: UART status error
Keyboard: wrong response from keyboard
Interrupt controller: unsolicited interrupt occurred
Network: unexpected interrupt occurred
Network: LANCE error bit set
Comm or printer: cannot clear 8250 pending interrupts
Comm or printer: 8250 DART does not transmit
Comm: UART status error
Comm: Receiver int, no data available
Comm: Receive data not equal to transmit data
Comm: UART does not transmit
Comm: UART modem status interrupt
Serial printer: UART status error
Serial printer: receiver int, no data available
Serial printer: Receive data not equal to transmit
data
Serial printer: UART does not transmit
Serial printer: DART modem status interrupt
Diskette could not get started
Diskette error in diskette interrupt handler
Diskette drive did not recalibrate correctly
Diskette drive did not recalibrate to track 0
Diskette controller did not sense track 0 bit

Error Numbers

IIIII

Table C-2

Service Diagnostics Error Numbers (cont.) (cont.)

Error
Number

FRU to Check
or Replace

1530
1531
1532
1533
1534

Diskette
I/O board
Diskette
Diskette
Diskette

1536

80287

1537
1538
1539

CPU board
80287
80287

1540
1541
1542
1543

I/O board
80287
Hard disk

1544

Hard disk

1545

Disk controller

1546
1547
1548
1549

Disk controller
Disk controller
Hard disk
Modem

1550
1551
1552
1553
1554
1555
1556
1557
1558
1559

Modem
Modem
Modem
80287
Hard disk
CPU board
CPU board
keyboard
I/O board

Modem: line status register not functioning correctly
Modem: actual data not equal to expected data
Modem intermediate results out of range
80287 intermediate results out of range
Hard disk intermediate results out of range
CPU intermediate results out of range
Event timer intermediate results out of range
Mouse intermediate results out of range
Keyboard intermediate results out of range
Comm intermediate results out of range

1560
1561
1562

I/O board
I/O board
I/O board

Printer intermediate results out of range
Diskette intermediate results out of range
Network intermediate results out of range

Description
Diskette drive seek failed
Diskette could not detect results
Diskette track write returned incorrect status
Diskette track read returned incorrect status
Diskette data read does not equal data written to
Diskette
80287: unexpected 80287 interrupt detected on
IRQ13 line
Interrupt controller: slave interrupt controller error
80287: Internal constants incorrect
80287: Internal tag word incorrect
Network: Receive data not equal to transmit data
Reserved
80287: control instruction failure
Hard disk: error formatting the diagnostic cylinder or
drive not formatted
Hard disk: cannot find a good sector on the diagnostic cylinder
Hard disk controller: error processing write command
Hard disk controller: status error from controller
Hard disk controller: error processing read command
Hard disk: error comparing data read to data written
Modem: error transmitting first character

C-15

IIIII Error Numbers
Table C-2

Service Diagnostics Error Numbers (cont.)

Error
Number

FRU to Check or
Replace

Description

HARD DISK SUBSYSTEM ERRORS

1600
1601
1602

Disk controller I3
Disk controller 13
Disk controller I3

1603
1604
1605
1606
1607
1608
1609
1610
1611
1612

1620
1621
1622
1623
1624
1625

Disk controller I3
Disk controllerI3
Disk controller 13
Disk drive 14
Disk drive 14
Disk drive
Disk controller I3
Disk controller 13
Disk drive 16
Disk
drive/controller
Disk
drive/controller
Disk controller I3
Disk drive 16
Disk drive 16
Disk
drive/controller
Disk
drive/controller
Disk
drive/controller
Disk controller I3
Disk controller I3
Disk drive
Disk drivelS
Disk drive
Disk drive 15

1626

Disk controller 15

1627

Disk
drive/controller

1613
1614
1615
1616
1617
1618
1619

C-16

Not present
Faulty bites) in controller register
Controller not ready when attempting to send
command
No HARD DISK interrupt received
Failed internal diagnostics
Failed reset - busy bit set
Not present/failed to become ready
Address marks not found
Seek operation failed
Controller misinterpreted the command
An undefined error has occurred
Sector not found error
ECC error
Bad block detected
Error bit not set in err~r register
Write fault bit was asserted
Drive failed to become ready
ECC corrected bit was asserted
Time out, remained busy during test controller
Failed to receive an interrupt
Controller never requested the data transfer
Request for data bit failed to go inactive
Encountered a bad boot cylinder
Too many bad sectors on one head
Too many bad sectors on the disk
Too many bad sectors during format of diagnostic
cylinder
No error reported during readjwrite test had data
mismatch
Error finding sector to do the read/write test

Error Numbers

IIIII

13Correct the problem as follows.
1. Make sure the expansion box is connected correctly.

2. Make sure the hard disk controller board is installed correctly and is
firmly seated.
3. If the error occurs again, replace the controller board.
14Correct the problem as follows.
1. Make sure the cable from the controller to the hard disk is firmly

plugged in.
2. Make sure the expansion box is connected correctly.
3. Make sure the hard disk controller board is installed correctly and is
firmly seated.

4. If the error occurs again, replace the cables.
5. If the error occurs again, replace the controller board.
15Correct the problem as follows.
1. Have the customer back up the data on the disk.

2. Have the customer format the disk.
3. Run the test again.

4. If the same number is displayed, replace the hard disk.
16Correct the problem as follows.
1. Follow steps 1 through 5 of Corrective Action 14, above.

2. Follow steps 1 through 4 of Corrective Action 15, above.

C-17

IIIII

Error Numbers

Table C-2

Service Diagnostics Error Numbers (cont.)

Error
Number

FRU to Check or
Replace

1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1650

Disk cable 16
Disk drive
Disk drive
Disk controller 13
Disk controller 13
Disk controller 13
Disk controller 13
Disk drive 16
Hard disk
Disk drive

1651

Disk drive

Description
Error on data compare for the read/Write test
Index pulse never toggled
Drive is out of spec for rotational speed
Reserved
Failed to report the correct error
Failed reset - busy bit not set
Status register 3F6 not equal to IF7
Digital input register faulty (also, see error 1633)
Too many soft sectors on one head
Drive parameters invalid - disk not formatted
Soft error, read error (corrected by retry) when verifying disk
Soft error, FCT not found or corrupted

MODEM SUBSYSTEM ERRORS
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714

Modem board 17
Modem board 17
Modem board 17
Modem board
Modem board
Modem board
Modem board
Modem board
Modem board
Modem board 18
Modem board 18
Remote modem
Modem board
Modem board
Modem board

Modem not present
8250 UART register failure
Modem interrupt IRQ3 test failed
Modem parity test failed
Modem baud rate test failed
Hayes command mode test failed
Hayes mode test commands failed
Modem firmware ROM checksum failed
Internal loop back tests failed
Remote loop back tests failed
Dial up to remote modem failed
Command to remote modem failed
Forced error test failed
Escape command failed
On-hook command failed

PARK DRIVE ERRORS
1800
1801
1802
1803

C-18

Diskette 0 19
Diskette 1 19
Hard disk 0 20
Hard disk 1 20

Unable to park diskette drive 0
Unable to park diskette drive 1
Unable to park hard disk drive 0
Unable to park hard disk drive 1

Error Numbers

IIIII

13Correct the ptoblem as follows.
1. Make sure the expansion box is connected correctly.

2. Make sure the hard disk controller board is installed correctly and is
firmly seated.

3. If the error occurs again, replace the controller board.
16Correct the problem as follows.
1. Follow steps 1 through 5 of Corrective Action 14, above.

2. Follow steps 1 through 4 of Corrective Action 15, above.

17 Correct the problem as follows.
1. Make sure the modem board is installed correctly and firmly plugged in.
2. If the number is displayed again, replace the modem board.

3. If the failure still occurs, replace the I/O board.
18Correct the problem as follows.
1. Make sure that the phone line is operational, there is a dial tone, and

the number is correct.
2. Check the functionality of the local modem by dialing into another
VAXmate that also has a modem. The remote modem must be operational and set to 1200 baud and autoanswer. If this is unsuccessful,
replace the local modem.
19Correct the problem by running the diskette drive test.
20Correct the problem by running the hard disk test.

C-19

IIIII

Error Numbers

Table C-2 Service Diagnostics Error Numbers (cont.)
Error
Number

FRU to Check

or Replace

Description

NElWORK INTERACTION ERRORS
NOTE
The following FRUs are actually referring to the IjO board in either the transmit
VAXmate or the echo VAXmate.

1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917

Xmitjecho

Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Transmit ring failure
Reserved
Reserved

Xmitjecho
Xmitjecho

Reserved
Reserved
LANCE packet data error
Reserved
Transmission timeout
Reserved
LANCE initialization failure
Logical address filter logic failure

1920
1921
1922
1923
1924

Xmitjecho
Xmitjecho
Xmitjecho
Xmitjecho
Xmitjecho

Framing error on received packet
Overflow error during packet reception
CRC error on received packet
Buffer error during packet reception
Byte count error on received packet

1930
1931
1932

Xmitjecho
Xmitjecho
Xmitjecho

1933
1934
1935
1936
1937
1938
1939

Xmitjecho
Xmitjecho
Xmitjecho
Xmitjecho
Xmitjecho
Xmitjecho
Echo

Buffer error during transmission
Underflow error, transmitting packet
Late collision encountered during packet transmission
Loss of carrier during packet transmission
Retry flag set during packet transmission
Fatal error, transmitter babbling
Fatal collision error
Fatal error, miss bit set
Fatal error, memory error bit set
Echo-node timeout, no response received from echo
node

C-20

Xmitjecho
Xmitjecho

Error Numbers 11111

Table C-3

Install New Diagnostics Error Messages

Error
Message

Action

THE DIAGNOSTIC DISK HAS NOT BEEN REMOVED

Removethe diagnostic disk from the drive. Remove the write-protect tab
from the diagnostic disk. Insert the new disk into the same drive and
close the drive door.
DRIVE NOT READY

Make sure the disk is inserted correctly. Insert the correct disk and close
the drive door.
BAD I/O BOARD

Run the diskette test by selecting it from the Individual test mode menu.
FILE NOT FOUND

Make sure to use the correct disk and make sure it is not physically
damaged.
BAD DISK

Remove and reinsert the disk. Check the disk for any physical damage.
DISK FULL

The test is unable to install the desired test. Make sure the diagnostic
disk contains only the diagnostic test and was not used as a general working disk.
Make sure that the Service Diagnostic disk was inserted. If it was, there is
no more space on the disk for tests to be installed.
WRITE PROTECT TAB IS STILL ON

Remove the Service Diagnostic from the drive, then remove the writeprotect tab from the disk. Replace the disk and continue with the procedure.
THE DIAGNOSTIC DISK HAS NOT BEEN REPLACED

Remove the new disk from the drive. Insert the Service Diagnostic disk in
the drive (make sure to remove the write-protect tab first). Then, close
the drive door.

C-21

IIIII

Error Numbers

Table C-3

Install New Diagnostics Error Messages (cont.)

Error
Message

Action

TOO MANY TEST FILES ON TIlE DISK
Make sure to use the correct disk. There must be no more than two test
files on the new disk.
TEST VALUE OUT OF RANGE
The maximum test number is 26.
TEST FILE NAMES DO NOT MATCH
Test and message files do not have the same test number. Make sure to
use the correct disk.
Table c-4

System Error Messages

Messages
The following error messages can be displayed while you are running the Service Diagnostics. These are MS-DOS operating system messages. Try to correct the error by resetting the system by typing Ctrl/Alt/Del at the same time, and starting the test again. If
the error message is displayed again, get a new Service Diagnostics diskette.
SYSTEM ERROR:

INVALID FUNCTION REQUESTED

SYSTEM ERROR:

TEST NOT FOUND ON DISKETTE

SYSTEM ERROR:

WRONG FUNCTION CALL MADE

SYSTEM ERROR:

ARENA TRASHED

SYSTEM ERROR:

INSUFFICIENT MEMORY

SYSTEM ERROR:

TEST CANNOT BE LOADED FROM THE DISKETTE

SYSTEM ERROR:

TEST WILL NOT WORK CORRECTLY

C-22

AppendixD
VAXmateCPU
Block Diagram

Figure D-l shows a block diagram of the VAXmate CPU board. If you need
more technical information, refer to the VAXmate Technical Description
Manual.

D-l

IIIII

D-2

VAXmate CPU Block Diagram

IIIII

CPU HOLD/HOLD ACKNOWLEDGE
REFRESH REQ/ACK
CONTROL BUS
8·BIT OMA REQJACK

I/O ROY

ROY 286

CPU STATUS LINES

80286
CPU
CONTROL BUS

16.0 MHZ eLK
CPU RESET

UA 23:16
UA 23: 16

POWER-UP
7

___ ___________________ _____________~~~:..9f------------------------------~
~

RESET 286

I
I

~I ~
I

I l.__
lBr--

PARITY ERROR

UA23: 17

SYSTEM DATA BUS

-;.

_~-:~~_~~====~-~_~-~~:~_~~-Y~i~~~>

I
I

' I - - - - - - - L - L - - - - - - - - - - ' - - f o - - = so
: -7:0- - '
,~--~----~-r----------------,_----~~~

J Lm____________ 'lI---------------___________u___li______________________ u_ ----__ -- _I' Lt..---__ _
I

------ -- ----- --- __ ...L - 7"8- - ""'5015:8"--"\

-----r-r--------------- --I---~:::N~:c::R~V'
1_[ }~;!~~~~~~-~1-~~~-:-____~-_~~~~~~~~~~~~~~~~ :~~~~-_-_~~~~-_~II-_-_-_~~~~~~~~~~~ ~~~~~-_~~~~~~~~~~~~J l___ _------ -------- -- -,
I J5:
- ---"'- --:'- - -, :
l
: :
' : :
r
.,
I
: ~
: :
SAs:oI
t
{s\
, SD15,B

r -- - --- - ___
I r ----- - ----T-r---------- - ------1
II

I
~, 7
I

r _____s~~~~~~DR~~S_B_U~ __ -~4--- - - - - - - - - - -

J3 EXPANSION

- - - - - - - - - - - - - " ; " ' - - - - - - - - ---;"':: - - - - - - - - - -

MFG JPRs

,: !,
,,, ,,,
, ,

I :

{

STATUS

~ 7

B 'SA7'Q

I : .

I I SA15:8

,I' ,,
I

,,I
,,

UA23:17

I/O BUS

~A.t.

J8, MEMORY

s..{': SA7:Q

' ,
: L-------1"I
L... _ _ _ _ _ _

SA16

I
I
I
I
I
I
I

RAM
ADDRESS
BUS

RAM DATA BUS

,""-_____ J

'..r-----;
~L-

~ANKl

507:0

,I ,,
: I
:, ,:

lMEG
MEM

HIGH
BYTE
"'512x8

______~

LOW
BYTE
"'512x8

~------~

,:
,1.. _____ -':
',("------:
:,
,

DMA ACK 3:0

DMA REO 3:0

BANKO

INTR REO BUS
RAS, CAS & WR SIGNALS

Figure D-l

VAXmate CPU Board Block Diagram

D-3

Index

80287, 1-9, 1-10,2-2,5-40
installation, 5 -16
replacement, 5-16
special option label, 5-17
test, B-8
A
Activity indicator, 2-42
Adapter (DESTA), 3-4
Adding a VAXmate workstation, 3-13,
3-14
Adjustments, 1-4, 4-1
centering, 4-9
cutoff, 4-6
focus, 4-13
height
250 line mode, 4-13
400 line mode, 4-8
horizontal hold, 4-5
monitor, 4-2
rotation, 4-11
video compensation, 4-12
width, 4-7
Alignment patterns, 4-1
Anode, 5-25
discharge, 4-4, 5-21
discharge tool, 1-3
Applications, 1-1
Architecture, 1-1
B
BA500 (expansion box), 2-27
Back door installation, 5-10
Back door removal, 5-8
Backplane, 5-67
Barrel connector, 3-4, 3-7

Base plate, 5-62
Baseband, 3-1
Battery, 1-4, 5-3, 5-74, A-3
replacement, 5-74
Bezel
centering, 4-9
CRT, 5-26
I/O board, 5-46
part number, A-2
plastic dress on CPU, 5-37, 5-38
BIOS, B-3
Block diagram
CPU board, D-l
I/O-Video board, 1-7
VAXmate workstation, 1-5
Blown fuse, 2-18, 2-20
BNC, 1-11,3-4,3-9,3-11
Board, 1-6
CPU, 1-8, 2-1, 2-10, 5-27, 5-32
components, 5-41
removal, 5-37
hard disk drive controller, 1-9, 5-54
I/O, 1-6,2-1,4-2, 5-34, 5-40
removal, 5-46
locations, 5-12
memory option, 1-9
modem, 1-10,2-22
monitor, 4-2, 5-32, 5-37
power regulator, 2-21, 5-72, 5-73
power supply, 1-8, 2-22, 5-34, 5-40
power supply replacement, 5-50
read/write, 5-57
Booting, 2-6, 2-16, 2-18, 2-24
Bridge replacement, 5-70, 5-71
Brightness, 4-1, 4-2

Index-l

11111 Index

C
Cable
IS-pin, 3-12
battery, 5-64, 5-67, 5-74
communications, 2-40
Ethernet, 1-11
ground lug, 5-32
lengths, 3-7
modem, 3-5
mouse, 2-40
power, 5-34
printer, 2-40
ribbon, 5-23, 5-34, 5-36
speaker, 5-33, 5-37
TV network, 3-5
ThiLWire, 1-9, 1-11,3-3
section, 3-3
segment, 3-3
unplugging, 5-4
Card cage, 5-67
CATv, 3-5
Centering, 4-9
Charnel, 5-30
Communications
port loopback, B-2
test, B-2
Components, 1-3
ThinWire, 3-1
Computer, 1-1
MicroVAX II, 1-1, 3-11
VAX, 1-1
Configuration
network testing, B-6
Configuration list, 2-2, 2-24, 2-25
main diagnostic menu, 2-29, 2-30
sample, 2-24
Connecting loopback connectors 2-41
3-6
'
,
Connector, 1-3, 2-41, 3-6
4-pin, 5-24, 5-32
9-wire filament, 5-26, 5-32
anode, 5-32
assembling network loopback, 2-37,
2-39
barrel, 3-4, 3-7
BNC, 1-11,3-11,3-4,3-9
loopback, 2-37
network port loopback, 2-37
read/write board, 5-57, 5-59

Index-2

T-connector, 1-3, 2-37, 2-38, 3-4, 3-7
terminator, 1-3,2-37,3-4
ThinWire loopback, B-6
Continue on error, 2-35
Continuous test passes, 2-36
Contrast, 4-1, 4-2
Controller, hard disk, 5-65
Controls
brightness, 4-2, 4-6
contrast, 4-2, 4-6
F, 4-3, 4-13
G2, 4-3, 4-6
H2, 4-3, 4-13
H4, 4-3, 4-8
HH, 4-3, 4-5
VC, 4-3, 4-12
W, 4-3, 4-7
yoke centering rings, 4-10
Country specific components, A-I, A-6
Cover removal
system unit, 5-11
CPU board, 2-1, 2-10,2-15, 2-17, 2-22,
5-27,5-32,5-42
block diagram, D-l
components, 5-41
grounding kit (PC500-UA), 1-8, 5-42,
A-I
installation, 5-37, 5-42
removal, 5-37
CRT
bezel, 5-26
filament connector, 5-32
handling precautions, 5-25
installation, 5-31
monitor adjustments, 5-1
removal, 5-25, 5-30
shield, 5-23, 5-26
Tech Tip 20, 5-20, 5-25
tilt bar, 5-26
yoke, 5-26
Ctrl/Alt/Del, 2-27, 2-48
Ctrl/Alt/Home, 2-22
Ctrl/PF3, 2-33, 2-35, 2-36, B-13
Cutoff,4-6

D
Data terminal equipment, 3-4
DELNI,3-7
DEMPR, 1-4, 1-11,3-16,3-4,3-7, B-13

Index \\\\\

DESTA, 1-4, 1-10,3-4,3-11, B-13
Diagnostic errors, 2-28
Diagonal cutters, 5-26
Discharge anode, 5-21
Disconnecting from network, 2-38, 3-6,
5-3
Diskette, 1-3
high and low density, B-3
high density, 2-22
key, 3-6
low density, 2-22
Diskette drive, 1-8,2-1,2-15,2-22
failure, 2-17
heat shield, 5-33, 5-42, A-I
housing, 5-33, 5-34
inserting diskette, 2-23
installation, 5-36
removal, 5-33
test, B-3
Do not log errors, 2-36, 2-48
Documentation, 1-5
Drive
diskette drive removal, 5-33
diskette drive test, B-3
diskette, 1-8, 2-1, 2-15, 2-17
hard disk removal with fan present,
5-54
hard disk removal without fan, 5-52
hard disk, 1-9,2-1,2-17, B-l1
recalibrate, B-12
DTE,3-4

E
EGA/network conflict, 1-8, 2-10, 5-42
Electrical description, 1-11
End of segment, 3-13
Environmental airspace, 3-3
Environmental description, 1-11
Error, 1-4
continue on, 2-35
continuous test passes, 2-36
count, 2-32
do not log errors, 2-36, 2-48
five test passes, 2-36
four-digit, 2-34
hard, 2-32
log errors, 2-35
loop on, 2-35
Net804, 3-6

proceed from, 2-35
prompt on, 2-34
reporting
test option, 2-34
ROM diagnostic screen, 2-28, 2-29
single test pass, 2-36
soft, B-3
Error log, 2-31, 2-43, 2-47, 2-48, B-3
erased, 2-48
error messages, 2-49
printing, 2-49
Error log mode, 2-48, 2-49
Error messages, C- 1
install diagnostiC, C-21
system, C-22
Error number, 2-3, 2-10, 2-15, 2-16,
2-18,2-25, C-l
error 40,2-15,2-17, C-2
error 43, 2-25, C-3
error 60, 2-17, C-3
error 83,2-17, C-3
error 87,2-17, C-3
error 99, C-3
four-digit, 2-28, 2-32, 2-42, C-4
list, C-l
ROM diagnostiC, C-l
service diagnostic, C-4
two-digit, 2-16, 2-25, 2-28, C-l
Ethernet, 1-6, 1-7, 1-9,3-1,3-6, B-6
Ethernet address chip, 5-41, 5-42
Event timer, 1-5, 1-11,5-3
test, B-1, B-5
ExpanSion box, 1-4, 1-5, 1-10,2-3,
2-26, 3-9, 5-2, A-2
backplane, 5-67
card cage, 5-64,
cover removal, 5-50
fan removal, 5-68, 5-69
newly installed, 2-25
part numbers, A-2
pins, 2-21
power connector and bridge, 5-70,
5-71
separating from system unit, 5-5
Extended Self-Test, 2-2, 2-5, 2-18, 2-22,
2-25, 3-6, 5-3
configuration list, 2-2, 2-24, 2-25
how to run, 2-22
successful, 2-24
unsuccessful, 2-24

Index-3

IIIII Index
F

HH, 4-3, 4-5

F,4-3
Faceplate, 3-5
Failed, 2-31, 2-43, 2-46
unsuccessful, 2-33
XXXXXX, 2-44
Fan replacement, 5-68
FCC Class A, 1-12
FDISK,2-17
Five test passes, 2-36
Focus, 4-13
FORMAT, 2-17
Four modes, 2-31
FRU replacement, 5-1
FRU, 1-1, 1-3,2-2,2-18,2-25, A-I
Fuse, 5-6, A-2
blown, 2-18, 2-20
keyboard fuse on CPU board, 2-14,
2-17

Horizontal bar, 2-6, 2-10, 2-16, 2-25
Horizontal hold, 4-3, 4-5

G
G2,4-3
Ground
lug, 5-27
straps, 5-27, 5-42, A-I

H
H2,4-3
H4,4-3
H4005,3-7
Hard disk drive, 1-9
base plate, 5-56, 5-62
cable, 2-21
controller, 2-1, 5-65
removal, 5-65
failure, 2-17
FDISK and FORMAT, 2-17
formatted, 2-17
formatting, 2-26
installation, 5-65
newly installed, 2-17
read/write board, 5-57
removal with fan present, 5-54
removal without fan present, 5-52
test, B-ll
Hard errors, 2-32
Heat shield, 5-19, 5-33, 5-36, 5-42
Height adjustment
250 line mode, 4-13
400 line mode, 4-8

Index-4

I
I/O-Video board, 2-1, 2-22,4-2,5-40
block diagram, 1-7
installation, 5-49
removal, 5-46
shield, 5-47
Individual test, 2-6, 2-25, 2-31, 2-32,
2-44
execution screen, 2-45
memory, 2-44
menu, 2-45
selection, 2-45
Industry-standard, 1-1, 1-12
Install new diagnostic
error messages, C-4
the network, 3-6, 3-8
update Service Diagnostic, 2-3, 2-31,
2-47
VAXmate server, 3-9

J
Jack, 3-5
Jumper
CPU board, 2-10, 2-15, 2-17, 5-41
drive select, 5-60
FG on diskette drive, 5-36, 5-37
modem, 2-10, 2-26, 5-15
Junctions, 3 -7

K
Key diskette, 3-6
Keyboard, 2-1, 2-17
failure, 2-17
fuse on CPU board, 2-14, 2-17
labels, 1-7
replacement, 5-75
test, B-8
Keyc1icks, B-9
Keys
arrow, 2-33
Ctrl/Alt/Del, 2-27, 2-47
Ctrl/Alt/Home, 2-2, 2-22

Index

Ctrl/PF3, 2-33, 2-35, 2-36
Extended Self-Test, 2-23
F2 (print log), 2-49
PREY SCREEN, 2-49
select, 2-45
Service Diagnostics, 2-27
L
L-bracket, 5-12
LA75 printer, 2-27
LAN (Local Area Network), 3-1, 3-9,
3-15
LED, 2-1, 2-3, 2-10, 2-25, 2-47
CPU board, 2-15
diagnosing, 2-11 through 2-14
expansion box, 2-19
functions, 2 -3
I/O board, 2-10, 2-15
keyboard, 2-17
locations, 2-3
power, 5-27, 5-32
read/write board, 5-57
removal and replacement, 5-44
Li, 2-24
Lithium battery, 1-4, 2-24, A-3
LN03 PLUS printer, 1-10
Local area network, see LAN
Local network link test, 3-6, B-12
Log errors, 2-35
Loop, 2-32
Loop line controller test, 3-6
Loop on error, 2-35
Loopback, 1-3
connector, 2-37
connecting to VAXmate, 2-41, 3-6

M
Main diagnostic menu, 2-29, 2-30,4-1
Maintenance Kit, 1-1, 2-3, 2-22
Map, ThinWire network, 3-16
Math coprocessor (80287), 1-9, 1-10,
2-2,5-41
replacement, 5-16
Measurements
centering, 4-9
rotation, 4-11
screen height
250 line mode, 4-13
400 line mode, 4-8
screen width, 4-7

IIIII

Memory, 2-2
dynamic, B-2
optional, 1-9, 1-10, 2-2, 5-3
protected, 2-2, B-2
real, 2-2, B-2
test, B-2
Memory option replacement, 5-13
MicroVAX II computer, 3-4, 3-11
MicroVAX II server, 3-11
Middle of segment, 3-14
MJ,3-5
MMJ, 3-5
Mode, 2-31
error log, 2-48, 2-49
Individual Tests, 2-44
new diagnostic installation, 2-47
selection, 2-33
System Test, 2-33
Modem, 2-22, 5-3
cable, 3-5
failure, 2-26
installation, 5-14
replacement, 5-14
testing, 2-26, B-ll
Modified modular jack, 3-5
Modular jack, 3-5
Monitor, 1-4, 1-6
adjustments, 4-1
CRT, 1-6
tilt bar, 1-6,5-26
Monitor problems
dark screen, 4-2, 4-3
edges too bright, 4-3,4-12
focus, 4-3, 4-13
height, 4-3, 4-8, 4-13
horizontal movement, 4-3, 4-5
not centered, 4-3, 4-9
retrace lines, 4-3, 4-6
slanted, 4-3, 4-11
too narrow, 4-3, 4-7
Monitor board, 2-22,4-2,5-37
installation, 5-25
removal, 5-20
Mouse, 1-9
cleaning, 5-75
replacement, 5-75
test, B-5
Multiport repeater, 3-4

Index-5

IIIII Index
N

~etvvork, 1-1,

Park all drives, B-12
Part numbers, 1-2, A-I
Pass definition, 2-32
Passed, 2-31, 2-43, 2-47
successful, 2-33
XXXXXX, 2-44
Patterns
grid/circle, 4-12
screen of E's, 4-4 through 4-12
250 line mode, 4-13
400 line mode, 4-12
video alignment, 4-1, B-9
PCSA, 1-1
Pivot cradles, 5-31
Ports, 3-4
Povver
comsumption
system unit, 1-12
expansion box, 1-13
failure, 2-18
maximum vvatts, 1-12
requirements, 1-10,2-21
shut dovvn, 2-18
supply, 2-22
Povver cord latch, 5-7
Povver LED removal, 5-44
Povver regulator board, 2-21
replacement, 5-61, 5-72
Povver supply board, 1-7, 5-39
replacement, 5-50
Povver-Up Test, 2-1, 2-5, 2-6, 2-18, 3-6,
5-3
hovv to run, 2-6
successful, 2-6
unsuccessful, 2-10
Printer, 1-9, 3-11
confidence test, B-9
LA75, 1-9, 2-27
L~03 PLUS, 1-9
port test, B-5
Povver-Dovvn Sequence, 2-27
Povver-Up sequence, 2-27
Printing error log, 2-49
Proceed from error, 2-35
Prompt on error, 2-34
PVC, 3-3

1-1,2-3,2-6
disconnecting from, 2-38
installation, 3-6
incorrect, 3-7, 3-8
LA~ (Local Area ~etvvork), 3-1, 3-9,
3-15
local link test, 8-12
loopback connector, 2-37
map, 3-16
test, 3-6, B-6
troubleshooting, 3-1, 3-6
vvorksheet, 3 -16
~etvvork port loopback connector,
2-37,2-38
assembling, 2-37, 2-38
~evv diagnostic installation, 2-47
~evv disk, 2-47
~evvly installed expansion box, 2-25
~ode, 3-5
~TU, 3-6

o
Ohmmeter, 1-3, B-6
Operating system, 2-28
Option, 1-4,2-25
80287, 1-8,5-16
backplane, 5-67
default, 2-34
in expansion box, 5-66
industry-standard, 1-12
memory, 1-8, 2-22, 5-3
memory replacement, 5-13
memory test, B-9
modem, 1-9,2-10,2-22,5-3
modem replacement, 5-14
non-DIGITAL, 2-2, 2-21
video, 2-6
replacement, 5-66
selection, 2-34
slot, 2-21
special option installed label, 5-17
testing, 2-31
Overcurrent shutdovvn, 2 -18
Overheating, 2-18
Overload,2-18
Overvoltage shutdovvn, 2 -18

Index-6

Index
R
RCD3l/32 controller (see Hard Disk
Controller)
RCD3l-EA, -EC (-FA, -FC), 1-13
RD3l, 1-13, A-3 (see also Hard Disk
Drive)
RD32, 1-13, A-3 (see also Hard Disk
Drive)
Read/write board, 5-57
Recommended spares, A-I
Removal, 1-4, 5-1
Replacement procedures, 5-1
Replacement, 1-4, 5-1
Retrace lines, 4-6
ROM diagnostic error screen, 2-28, 2-29
ROM, 2-1 and 2-2
ROM-BIOS, 1-1
Rotation, 4-11
RX33, 1-8, 1-12 (see also Diskette
Drive)

S
Sample error log screen, 2-49
Screen problems (see Monitor Problems)
Screens
individual test execution, 2-45
individual test menu, 2-45
main diagnostic menu, 2-29, 2-30,
4-1
ROM diagnostic error, 2-29
sample error log, 2-49
system test execution, 2-43
system test requirements, 2-37
test option menu, 2-34
Section, 3-3, 3-9
Segment, 3-3, 3-9, 3-13, 3-14
Separating expansion box from system
unit, 5-5
Server, 1-1,3-4,3-5
MicroVAX II installation, 3-11
VAXmate installation, 3-9
Service Diagnostics, 1-3, 2-3, 2-5, 2-25,
2-26,2-27,2-29,2-32,3-6
configuration list, 2-29, 2-30
error log, 2-32
error reporting, 2-34
how to run, 2-27
individual test, 2-25, 2-31, 2-32,
2-44
modem, 2-26

IIIII

install diagnostic error messages,
C-21
mode selection, 2-33
modes, 2-29, 2-30, 2-31
new diagnostic installation, 2-31
successful test
error log, 2-32
XXXXXX, 2-44
system test, 2-31, 2-32
Shield
CRT, 5-23, 5-26
diskette drive heat shield, 5-19, 5-42
I/O board, 5-45
webbed, 5-20
Short circuit, 2-18, 2-20
Shutdown
overcurrent, 2-18
overvoltage, 2 -18
thermal,2-18
Single test pass, 2-36
Skid plate, 5-61
Soft errors, B-3
Spares, A-I
Speaker
cable, 5-37
keyboard, 2-6, 2-15, 2-16, 2-25
replacement, 5-18, 5-19
test, B-5
SpeCial option label, 5-17
Static electricity, 5-3
Successful test, 2-6, 2-43
error log, 2-32
Extended Self-Test, 2-24
Power-Up, 2-6
XXXXXX, 2-44
Symptoms
CPU and LEDs, 2-10, 2-11
EGA/network conflict, 1-8,2-10,
5-42
error number, C-1
monitor, 4-3
System administrator, 3-13, 3-16
System configuration, 2-29, 2-30
System error messages, C-22
System errors, C-1
System halt, 2-15
System interaction test, B-IO

Index-7

IIIII Index
System test, 2-5, 2-31 execution, 2-42
how to run, 2-33
requirements, 2-37
successful, 2-33
unsuccessful, 2-33
XXXXXX,2-44
System unit, 1-3, 5-5
back door, 5-6, 5-7
cover removal, 5-11

2-33, 3-6

T
T-connector, 2-38, 3-3, 3-7, 3-9
Tape measure, 1-3, 4-1, 4-7
Tech Tip 20, 5-20, 5-25
Teflon, 3-3
Terminator, 2-37, 3-4, 3-9, B-6
Test, 2-1
80287, B-8
aborting using CTRLjPF3, 2-33, 2-35,
2-36
communications, 2-2
communications port, B-2
descriptions, 1-4, B-1
diskette drive, B-3
event timer, 2-2, B-5
exceptions, 2-26
Extended Self-Test, 2-2, 2-5, 2-18,
2-22, 3-6, 5-3
hard disk, B-11
individual, 2-6, 4-1
installing new, 2-3, 2-47
keyboard, B-8
local link (19), 3-6
loop, 2-32
loop line controller, 3-6
loopback, 2-2
memory, B-2
modem, 2-26, B-11
mouse, 2-2, B-5
network, 3-6, B-6
option, 2-34
option memory, B-9
Power-Up, 2-1, 2-2, 2-5, 2-6, 2-18,
3-6, 5-3
printer, 2-2
printer confidence, B-9
printer port, B-4
ROM diagnostic sequence, 2-6 - 2-9

Index-8

Service Diagnostics, 2-5, 2-27
speaker, B-4
status, 2-29, 2-31
system, 2-5, 3-6
system interaction, B-10
updating, 2-3, 2-31, 2-47
video, B-3
Thermal shutdown, 2-18
ThinWire, 1-7, 1-9,3-1
cable section, 3-3
cable segment, 3-3
cabling, 3-3
components, 3-1
Ethernet cable, 3-3
installation, 3-1
network, 3-9
troubleshooting, 3-1
Tilt bar, 5-26
Tilt channel, 5-30
Transceiver, 3-7
Troubleshooting, I-I, 2-1
network, 2-1, 3-1, 3-6
VAXmate, 2-5
Turn off power, 5-4

U
UL (Underwriter's Lab), 3-3
Unplug cables, 5-4
Unsuccessful test, 2-43
error log, 2-32
error number, 2-16
Extended Self-Test, 2-24
Power-Up Test, 2-10
XXXXXX, 2-44
Updating tests, 2-3, 2-31, 2-47

V
VAXmate workstation
block diagram, 1-5
components, 1-3
server installation, 3-9
VC,4-3
Video, 2-1, 2-6, 2-15
alignment patterns, 4-1, B-9
compensation, 4-12
equipment, 3-5
problems (see Monitor Problems)
test, B-3
Voltage, 4-10, 4-11

Index

IIIII

w
W,4-3
Webbed shield, 5-20
Width, 4-7
Workstation, 1-4, 1-1
Write-protect tab, 2-46

x
XXXXXX message, 2-44

y
Yoke, 5-26
centering rings, 4 -1 0
clamp, 4-11

Index-9