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Document:	Professional 380 Pocket Service Guide
Order Number:	EK-PC380-PS
Revision:	003
Pages:	160
Original Filename:

OCR Text

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Equipment b orporation

Digital

eJt4

{)

]%E Edition, September 1984
2nd Edition, December 1984
3-d Edition, June 1986

?fimefi in U.S.A.

The reproduction of this material, in part or whole, is
strictly prohibited. For copy information, contact the
Educational Services Department, Digital Equipment
Corporation, Maynard Ma&sa@hm@ttg 01754.

The information in this document is subject to change
without notice. Digital Equipment Corporation assumes
no responsibility for any errors that may appear in this
document.

CP/M is a trademark of Digital Research, Inc.
Velcro is a trademark of Velcro, USA, Inc.
Velostat is a trademark of 3M Company.

The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts.

CTI Bus
DEC
DECmate
DECnet
DECsystem-10
DECSYSTEM-20
DECUS

DECwriter

DELNI
DIBOL
MASSBUS
PDP
P/OS
Professional
Rainbow

RSTS

RSX
UNIBUS
VAX
VMS
VT
Work Processor

INTRODUCTION
CHAPTER1

TROUBLESHOOTING AND

TESTING
General

......... .. ...

. ... ... ...
..

Troubleshooting Notes .. .............

1.1.2

Physical Differences Between the

1.2

Professional 380 and 325/350 ... .... ..
Troubleshooting with Tests ... ...... .. ...

1.3

Power-Up Self-Test . ..........
... ... ..

1.4

Maintenance Services Tests

1.4.1

[RES—

1.1

1.1.1

.............

Running the MaintenanceApplication
Diskette

... ..

1.4.10

.. ...
Update Maintenance Services .........
Bigdisk Block Check ...............
..

1.4.11

Uh
3
G0

\Z““iz::?
[ER—)

RX Speed Test

1.4.13

Fast Formatter ... .....
... ... ......
..

1.8.1

Boot Problems ............
... ... ... .
..

Boot Failures ..................
... ..

1.9

System Software Error .. ...

1.10

Keyboard Problems

1.11

?rmm??mb@m@g.,,,,,,,fluw,“,nfl ,,,,,,

1.12
1.13
1.14

Communications Problems
..............
Eisksfie?mbiemgHHH,“HMHH ggggg
Hard Disk Problems

. ...

... ...

........... e

fuesord

b
B
L

1.8

... ..
System Failure with Boot . .........
... ..
.

1.7

.. .......

.........
.. ...

System and Boot Problems

No Response at Power-Up

1.5
1.6

e
€wd

...........

Minidisk Block Check . ... .........._.

1.412

1.4.9

[r—

Video Alignment Pattern Program

[

Bar Pattern Program ... .. ... ...

—

1.4.7

1.4.8

Printer Test .......
... ...
..
.. ... ..
Configuration Display Program . .
... ..

1.4.6

1.4.5

frmm—

Keyb
Test ...
oard
...................

\ej@

System Unit Test....................

1.4.4

1.4.3

B oD

.....
... ... ... ...
..
... ...
Customer Mode and Serm@ %fi@@fi %%%%%

D000 D0 00 b e e B OO0 W L

1.42

CONTENTS

Y
et ok

151

15.3

15.4

proh

152

16.1

memwmmwmmw

16.2

16.3
A7

171

17.2
17.3
18

18.1

18.2

oL,
e
Tests for Options .. ...
L.
CP/MOption .......coivvevaee
...
Real-Time Interface ..............
Telephone Management System .... ...
... ...
DECNA Controller ...........
The Analog Data Module (ADM) ..... ...
ADM Troubleshooting — System
Unit Test ...
...
.......
FRU Isolation ....
Troubleshooting .. ......... ..o
...
Serial Line UnitOption .............
SLU Configuration ..................
Power-Up Self-Test .................
..
SLU Service Diagnostic . ...........

Hard Disk Expander Box Option .........
Power-Up Self-Test ............ ...,
...
....
...
Service Diagnostic ......

CHAPTER 2
2.1

2.2

2.3

2.4
2.5

2.6

58
58
60
63
65
66

(RD50/51 Hard Disk Drive) ..........

Lo
S

N I

i\u};_m

A I N I S

OO I

b b b2

2.7.3

b2 B

DIP Shunt Replacement

2.7.2

2.14.1

2.14.2

53
54
55
55

e
General ... ...
Removal and Replacement Procedures . ...
Top COVer .. ovvt i
on.
RX50 Diskette Drive . ...
RD Hard Disk Controller ...............
RD Hard Disk Drive . ...t

Roard ..ot

2.7.1

44
45
46
51
51
53

REMOVAL AND REPLACEMENT

RD50/51 Hard Disk Drive Read/Write

2.7

40
40
40
4]
43
43

RD52Board . ...
RD31 Device Electronics Board ... .. ..
Power Supply .. ..o
System Module ...... ...
Extended Bit Map and Memory Daughter
Boards . ..ottt
Battery Pack ... ... ... .o
VO Boards ... oo
Real-Time Interface .................
Telephone Management System

e
(TMS) ..
Keyboard ....... ..o
Removing and Replacing the Analog Data
Module (ADM) ....... ...t
Opening the ADM Chassis ...........
Removing and Replacing the Power

73
75
79
80

88
88
91
94
97
98

99
99

SUPPLY oo 101

CONTENTS

2.14.3

Removing and Replacing the LED

2.14 4

Removing and Replacing the

2.14.5

Motherboard .......
.. ...
....
.. .. ... 105
Removing and Replacing the Digital

Board

2.15

2.15.1

2.15.2

2.15.3
2.16
2.17

3.1
3.2.1
3.2.2

3.2.3
3.24
3.2.5

3.2.6

102

VOBoard .......................... 106
Hard Disk Expander Box

............... 106
Hard Disk Drive ......
. ... .. ..... 106
Power Supply ..................
.. ... i15
Load Resistor Assembly .. ..........
.. 117

Serial Line UnitOption . .........
..... 118
Recommended Spares Lists .. ............ 122

CHAPTER 3

3.2

... ... ... ... ..

VIDEO MONITOR ALIGNMENT

General ... ... .. ... ... .. .. .. ...,
Monitor Adjustments . ..................

126

Removing the Monochrome Monitor ...
Monochrome Monitor Cover ... .......

129

126
126

Preparations for Alignment ........... 130
VerticalHold ....................... 132
Horizontal Hold ...............
... .. 132

3.2.9

Focus ... ... ... ... ... ... ... 132
Vertical Centering and Rotation ... .... 133
Horizontal Centering ................ 134
Aspect Ratio (Horizontal Width and

3.2.10

Height) ...... ... .. .. ... ........... 135
Vertical Linearity ...............
.. .. 136

3.2.7

3.2.8

CHAPTER4

TESTING AND
TROUBLESHOOTING THE

DELNI UNIT
4.1

4.2
4.3

4.4

General

...
....
.. ... ...
...
... .. ...
Testing the DELNI Unit ............
...,
Testing the Transceiver Cable ... ..... ....
Software Problems .....................

APPENDIX A

RELATED DOCUMENTATION

APPENDIX C

?HYSEQ&L/E‘@NQH@N&L

137

137
138

139

i-1

Power-Up Troubleshooting Diagram . .

i-2

Selt-Test Diagram . ..................
...

i-3

DECNA Loopback Connector Test
Points

. ...

. e

-4

Analog Data Module (ADM) . ........ ...

i-5

ADMFRUs

1-6

SLUOption
Kit ... ... ..........

... .. L

-7

SLU Configuration and Cabling ....... ...

Z2-1

FRU Removal Sequence .............
...

2-2

Power Switch and AC Power Cord

2-3

Circuit Breaker . ..........
... ..........

2-4

Diskette Drive Door(s)

2-5

TopCoverReleases ....................

2-6

Removing TopCover . ..................

... ...

.................

2-7

I/O Cable and DC Power i,&%fi@ e

2-8

Diskette Drive Release Tab . ..........
...

2-9

Removing Diskette Drive . ............
...

2-10

Disconnecting I/O

Cables from

/OBoard........
... ... ... .. ... ..
2-11

Hard Disk Drive Release Tab . ........
...

2-12

4-Wire DC PowerCable .............
...

2-13

Removing Hard Disk ...................

2-14

Drive SkidPlate .......................

2-15

Read/WriteBoard .. ....................

2-16

PS Connector. .........................

2-17

P8, P7, and P6 Connectors ..............

2-18

PadConnector. . ... ... iiininen..

2-19

Removing Read/Write E@azfi ,,,,,,,,,,,,

2-20

DIP %Emm L@mm@m ,,,,,,,,,,,,,,,,,,,,

2-21

RemovingRD

2-22

RIDS52 jgmpm Options ..................

2-23

Driive SkidPlate .......................

2-24

Device Electronics Board

2-25

...............
14, Efi and J6 Connectors ...............

2-26

Installing Connector ....................

2-271

Efi"}@vice Electronics Board Configuration
Components .........c.oiiieiiinnnnnn

2-28

16-Pin System Module Power
Connector

2-29

. ... .. i

4-Pin Mass Storage Device Power
Connector

. ... .. . ..

2-30
2-31
2-32

Power Supply Release flip& e
Removing Power Supply Assembly .......
System Module (Rear) ..................

2-33

/O OptionBoards .....................

CONTENTS

2-34
2-35

2-36
2-37

2-38

2-39
2-40
2-41
2-42

2-43
2-44

2-45

2-46
2-47
2-48
2-49
2-50

2-51
2-52
2-53

2-54
2-55
2-56
2-57
2-58

2-59

2-60
2-61
2-62

2-63

2-64
2-65

2-66
2-67

2-68
2-69

2-70
2-71
2-72

Diskette Drive I/O Cable and Hard Disk

[/OCables ............................

aaaaaaa

Sliding Out Disk Drive Assemhhes

Captive Screws on Chassis ..............
System Module and 16-Pin Power
Connector ............................

System ID PROM

Removing System Module .............
..

..............
.....

Removing and Replacing ID PROM

......
Releasing Option EBO Board ............
Removing Option EBO Board .. ..........
System Module and 2-Wire Battery Pack

Cable ... ... .. ... . ... .. . .. . . .
Removing Battery Pack ..............
...

Cable Cover/Door .................. ...
Cables Connectedto I/O Board ..........
[/OBoardHandle ......................
Turning I/O Board Handle ...........
...

87
88
&9

89
90

92
63
93

Sliding Out /O Board ..................
Removing Internal Cable ..........
... . .
Shield Door Assembly .. ...........
.. ...

..........

Telephone Line Interface (TLI)

Voice Unit .........................
...

Removing Screws fmm E@imm of ADM
.

94
G5

Removing Shield . .................
.. ... m@i}
ADMPFRUs .......................... 106
Disconnecting Cables and Connector

Strip ... ..... 101
Replacing Power Supply ..........
...
... 102
Disconnecting Cable from LED Board .... 103

Removing 5-Volt Jack

............
... ..
. 103

Removing LED Board .............
...
. . 104
Disconnecting Cables from
Motherboard ...
...
...
.. ..
. ....
. .. . . 105

Removing Eight Hex-Nuts . ...........
... 105
Removing Motherboard ............
.. ..
. 105
Disconnecting Cables from Digital
I/OBoard............................. 107

Removing Digital /O Board ............. 107

Disconnecting Data Cable

{on System Unit).......................

108

Removing Internal Data Cables ..........
169
Removing Data Cable Connector
Assembly ...
... ...
... ........
..
.. ... 110

Removing Data Cable on Expander Box ... 111
RemovingCoverScrews ................ 112
Removing Cover from Expander Box .. .. .. 113

viti

CONTENTS

2-T73

Releasing the Drive .. .................. 113

2-74

Removing Optional Hard Disk Drive .... ..

2-75

Disconnecting Power Supply and Load

............ .

116

-7

Power Supply/Load Resistor Assembly .. ..

117

Removing Internal SLU Option Cable ... .,

118

Unplugging Internal SLU Option Cable

. ..

119

.. ...

120

b !\;.2 N

Removing Mounting Screws

“""'-§

115

-T76

OO~

ResistorCables ....................... .

114

SL.U Option Cabling and Interconnect
Boxes

...

2-81

Removing SLU @f}pfi@n Cable ........ e

3-1

Video Adjustment Locations ...........
..

127

3-2

System Unit Power Switch

127

3-3

Monitor(Rear)

3-4

Tilt Mechanism Foot and Retaining
.

129

3-5

Retaining Screw

. ................ e

130

3-6

Removing Cover . ......................

131

3-7

Universal Alignment ?&Eifim (Maintenance

3-8

Universal Alignment Pattern (Maintenance
Services Version2.0 and Higher) .......
..

133

3-9

Measuring theScreen Display . ...........

135

B-1

Professional 380 FRUs

Screw Cap

... .. e

........................

... ...

Services Version 2.0 and Lower)

C-1

121

128

.......
.. 133

(Exploded View) .. ... ..................

142

Functional Block Diagram . ..............

149

TABLES
1-1

No Response at Power-Up

1-2

Indicator ErrorCodes

. .................

..............

[-3

ErrorCodes .......
... ... ... ... ...

1-4

BootProblems .........................

1-5

System Software Problems

..............

1-6

Keyboard Problems

....................

1-7

Printer Problems .. .....................

1-8

Communications Problems

1-9

Diskette Problems . .....................

1-10

Digital Cable Connections ...............

2-1

ADM Power Supply Cable Connections ... 101

2-2

Recommended Spares List . .............. 122

..............

PURPOSE
This pocket service guide describes the following topics for
the Professional 380 system.

Troubleshooting to the field replaceable unit (FRU)
FRU removal and replacement
Monochrome monitor adjustments
NOTES, CAUTIONS, AND WARNINGS
Notes, Cautions, and Warnings appear throughout the
pocket service guide.
Notes contain general information you should know.

Cautions contain information to prevent damage to the
equipment and software.
Warnings contain information to prevent personal injury.

TOOLS REQUIRED
You need the following tools to service the Professional

380 systems.

Tool

Part Number

Volt chmmeter (VOM)

29-13510-00

I /4-inch slotted screwdriver

29-10983-00

Number 2 phillips screwdriver

29-11005-00

Keycap removal tool

74-277314-01

Hex-core alignment tool

29-23190-00

Video alignment template

29-24371-00

Color bar chart

29-24661-00

Screen cleaner

29-24791-00

ADM test box

70-22016-01

Static protection kit

29-11762-00

1.1

GENERAL

This chapter contains the information you need to
troubleshoot the Professional 380 system and verify that
the system is operating correctly. Troubleshooting the system 1s a two-part process using the internal self-test and

the system maintenance application tests.
1.1.1
Troubleshooting Notes
The troubleshooting procedures in this guide are based on

the assumption that only one field replaceable unit (FRU)
has failed. The symptoms displayed on the monitor screen

may indicate multiple failures. As a result, the symptoms
may change as you replace FRUs. Always troubleshoot
according to the current symptoms.

Spare parts can fail. Do not ignore the possibility of a
part failure just because the part has been replaced once.

You must turn off power before disconnecting or
replacing any FRU.
1.1.2

Physical Differences Between the Professional

380 and 325/350
The Professional 380 uses a diskette or hard disk based
operating system. The Professional 380 has six slots avail-

able in the card cage for options. There are 18 openings on

top of the card cage for top-mounted connectors. (There
may be more than one hard disk controller.)

The Professional 350 can use a hard disk based oper-

ating system and also the diskette system. The 350 has
three slots available in the card cage for options.

The Professional 325 uses a diskette based operating

system and cannot use a hard disk. The 325 has only one

slot available in the card cage for an option.

TROUBLESHOOTING AND TESTING

You can see the difference between the Professional
350, 325, or 380 system in the logo on the front panel by
the power switch. If you open the card cage door on the
system module you can see that a Professional 350 has six
(slot onee andand
slots (slots
four
four slots
hasal
325 has
325
Professionalssion
and aa Profe
slots and
three are blocked).

1.2 TROUBLESHOOTING WITH TESTS
The Professional computer has a series of internal powerup self-tests and diskettes that contain additional maintenance test programs. These tests help you isolate failures
to the FRU. If a test indicates a failure, adjust or replace
the FRU indicated by the test. When you adjust or replace
an FRU, perform all the tests to ensure correct system
operation.

1.3

POWER-UP SELF-TEST

The Professional computer has an internal power-up selftest that checks all major system components. The selftest also determines what options are present and if each

option can operate correctly. The self-test runs automatically every time you turn on system pOwer.

The results of the power-up self-test appear as a graphic
display on the screen. These displays let you quickly identify power-up problems. Figure 1-1 shows these displays
and directs you to the correct troubleshooting procedure.
CAUTION

Turn off or disconnect any equipment attached
to the real-time interface, if installed, before
you turn on the system. Let the power-up selftest run to completion before you turn on the
equipment attached to the real-time interface.

1.4

MAINTENANCE SERVICES TESTS

The Professional system comes with a maintenance diskette package. This maintenance application package contains a complete set of test programs. You can run the
diskettes as an application on the diskette based operating
system. Press the Help key for information about maintenance services and the tests.
NOTE

The Help key describes the selected test, while
the Do, Enter, and Return keys execute the test.

TROUBLESHOOTING AND TESTING

BLANK SCREEN

SEE PARAGRAPH 1.5

SYSTEM IMAGE WITH

SEE PARAGRAPH 1.6

HIGHLIGHT AND FLOPPY

SYSTEM IMAGE WITH

SEE PARAGRAPH 1.7

HIGHLIGHT

DIGITAL LOGO AND

SEE PARAGRAPH 1.8

FLOPPY IMAGE

DIGITAL

NUMBERS

LOGO WITH
AND

FLOPPY

SYSTEM IMAGE WITH

SEE

PARAGRAPH

1.8.1

SEE PARAGRAPH 1.9

NO HIGHLIGHTS

SYSTEM CHECKS GOOD.

DIGITAL LOGO

IF THERE 15 T?JO BO_OT

AFTER ABOUT 2 MINUTES.
SEE PARAGRAPH 1.8, RUN
THE SYSTEM MAINTENANCE
DISKETTE. SEE PARAGRAPH
1.4 FOR INSTRUCTIONS.
MA.OGD1A - 83

ING
AND TESTING
TROUBLESHOOT

1.4.1 Running the Maintenance Application Diskettes
Y ou can run the maintenance application diskettes on
iskette-based system with the following procedure. Th
diskette runs only on the Professional diskette-based operating system (P/OS).
fi‘%

NOTE

If you are servicing a Professional 300 compuster without mass storage that loads its operating
system from a central file server, you must first
install a diskette drive and controfler. Refer to
Paragraph 2.4, RX50 Diskette Drive, and Paragraph 2.12, /0O Boards, for removal and
replacement instructions.

CAUTION
Turn off or disconnect all equipment attached
to the real-time interface, if installed, before
you run tests. Let the tests run fo completion
before you turn on the equipment attached to
the real-time interface.

S B

Turn power off.

Remove any diskette(s) in the drives.

Insert the P/OS system diskette in drive 1.
Turn power on.

At the prompt, insert the PRO Installation/Maintenence Application diskette in drive 1 and
the PRO Installation/Maintenance Application diskette number 2 in drive 2, then press Resume,

Select monitor type {(maintenance services version 3.0
and higher).
7.

1.4.2

Select the test(s) you want to run.
Customer Mode and Service Mode

You can use the maintenance application diskette in two
modes, customer and service. In customer mode, the
screen display lists the following eight tests and programs.
System unit iest
Keyboard tesi
Printer test
Configuration display

program

patiern program
Updatie maintenance services

Bar

Bigdisk block check
Minidisk block check

TROUBLESHOOTING
AND TESTING

The system always enters customer mode when you
select the maintenance services menu.
Service mode lets you run all or part of the system unit
test. You can also repeat each test automatically. In service mode, the screen display lists the following 10 tests

and programs.
System

unit

Keyboard

test

iest

Printer

test
Configuration

Bar

pattern

Video

alignment

Update
Bigdisk

block
block

test

speed
disk

program

pattern

maintenance

Minidisk

Hard

display

program
program

services

check
check

formatter

The system enters service mode only after you type the
correct key sequence on the keyboard.

The following paragraphs describe the use of each test
in both modes. The keyboard key test, printer test, and bar
pattern program are the same for both modes. The update

maintenance services program lets you add test programs

for new options; it is the same in both modes. The video
alignment pattern program works only in service mode.

NOTE
Beginning with maintenance services version
3.0, displayable menu selections are dynamic.
This means that if functionality does not exist
to run specific maintenance services selections,

those selections do not appear in the menu. For
example, a system without a hard disk does not

display a big disk block check or a fast formatter.

Also, the system umit test submenu (Field

Service mode) does not show a hard disk
subsystem.
1.4.3
System Unit Test
The system unit test is a general test for all system unit
components.

sections.

The system unit

test

has

the

following six

Diskette drive checks the drive read/write circuits.

Hard disk checks the drive read/write circuits. This

test 1s only for systems with a hard disk drive.

Prinzer port internally loops back the system printer

circuits. This test does not send data to the printer.

ING
AND TESTING
TROUBLESHOOT

Floating point processor checks the floating point
instruction set.

Communications port internally loops back the system communications circuits. This test does not send
or receive data from external devices.
All other options tests each option connected to the
system and those options that have had their test added
with the update maintenance services program.

The system unit test works in customer and service
mode.

1.4.3.1 Running the System Unit Test in Customer
Mode - Run the system unit test in customer mode as
follows.

1. Select the maintenance services merntu.

2. When the maintenance services menu appears on the
screen, select the system unit test with the cursor
keys.

Press the Do key.

4. The test runs for about 2-1/2 minutes. While the test
is running, the following message appears on the
screen.

SYSTEM

UNIT

UNDER

TEST

In the upper-left corner the word working flashes. As
the test runs, the number XX counts down to 0.

5. A test summary appears at the end of the test.
6. Press the Help key for more information about any
failures that occurred.

1.4.3.2 Running the System Unit Test in Service Mode
~ Run the system unit test in service mode as follows.
1. Select the maintenance services menu.

2. Press the F12, F19, and F5 keys in that sequence.
This places the test in service mode.

3. When the maintenance services menu appears on the
screen, select the system unit test with the cursor
keys. Press Do.

TROUBLESHOOTING AND TESTING

Select the test or tests you want to run. If you want to
run loopback tests, make sure the printer and com-

munications

port loopback connectors are both
installed before running that test. Press Select.

NOTE

Selecting “Loopback connectors installed” only
puts the ports on back of the unit in external

loopback mode. Selecting only this menu item
and pressing Do will not test anything.

NOTE
Individual system option tests appear on the
menu only if that option is in the system, and its

test has been added with the update maintenance services program.

Refer to Paragraph

1.15 for information about tests for specific
options.
5.

From the new display, select either a single or multi-

ple test pass. If you select multiple passes, press Interrupt and Do to stop the test. Make at least two
complete passes for accurate results. While the test is
running, a summary of the components being tested

and their current status appears on the screen.
1.4.3.3
System Unit Test Results — The system unit test
displays its results on the screen. Press Help for more
information and corrective action you can take if errors

have occurred. Press Exit to return to the maintenance
services menu,

1.4.4
Keyboard Test
The keyboard test lets you verify that each key on the
keyboard is working correctly.

NOTE

For this test to operate correctly, the keyboard
must be set for United States/Canada (LK201-

AA). If you have a different setting, first enter
set-up mode (press Set-Up), move the cursor to

“Change Keyboard,” and press Do. Remember

to return the correct setting to your keyboard

when you finish. (Version 3.0 and higher automatically does this.)

TROUBLESHOOTING AND TESTING

1.4.4.1 Running the Keyboard Test — Run the keyboard
test as follows. The keyboard test is the same in Customer
and service mode.
I. Select the keyboard test with the cursor keys.
2.

Press Do.

3. Wait about five seconds for the keyboard diagram to
appear on the screen.

4. Press each key on the keyboard at least twice. The
first time you press a key, the corresponding key on
the diagram should change color. The second time
you press a key, the key should return to the original
color.

NOTE

You cannot test keys marked X.

5. Press Exit five consecutive times to end the program
and return to the maintenance services menu.
1.4.4.2 Keyboard Test Results — The keyboard diagram
tells you if a key has failed. The test indicates a key failure
when you press a key and the corresponding key on the
diagram does not change color. If the test finds a bad key,
replace the keyboard.
1.4.5

Printer Test

The printer test lets you send data to the printer.
1.4.5.1 Running the Printer Test — Run the printer test
as follows. The printer test is the same in customer and
service mode.

1. Make sure printer power is on and the controls are set
to match the system. Refer to the printer’s pocket
service guide for information on the controls.

2. Select the printer test with the cursor keys.
3.

Press Do.

4. Wait about 15 seconds for the test to print a short
pattern on the printer and the screen. The pattern is
less than a page long.

5. Press Resume to return to the maintenance services
menu.

1.4.5.2 Printer Test Results — The pattern on the screen
should match the pattern printed on the printer. Refer to
Paragraph 1.11 if the printer does not print the same
pattern or does not print at all.

TROUBLESHOOTING
AND TESTING

1.4.6

Configuration Display Program

The configuration display program lists the components

connected to the system. Use the configuration display
program to determine what modules are connected to the
system, the system identification (ID) number, and service
information. This test works in customer and service

mode. However, in service mode, this test shows additional
data.
1.4.6.1

Running the Configuration Display Program in

Customer Mode - Run the configuration display program
in customer mode as follows.

Select the configuration display program with the
cursor keys.
Press Do.

Wait about eight seconds for the screen display. (See
the following example.)
4.

Press Resume to return to the maintenance services
menu.

Typical Screen Display*
Identification
Duty

Cycle

Cumulative

System

number:

Start
P/0S

000000155069

Date:1
Run

Jul

Time:

954

hours

Module:

Keyboard

interface

Communication

J-11

Processor

interface

Memory

management

Printer

interface

Floating

point

On-board

video

adapter

Clock
and

EBQO

512

Kilobytes

Option

slot

read/writes)
Option slot 2:

memory

Hard

Diskette

read/writes)
Option slot 3:
Option slot 4:

EMPTY

Option

slot

EMPTY

Option

slot

EMPTY

Keyboard
i
S

LK201

disk

(system

total)

megabyte

controller

---

Cxxxx
(xxxxx

EMPTY

(xxxxx

key

strokes)

The underlined information appears only in service mode.

TROUBLESHOOTING AND TESTING

“Identification number” is the system ID or identification number. This number resides in the removable ID
PROM.

“Duty Cycle Start Date” and “Cumulative P/OS Run
Time” appear only in service mode and only if the duty
cycle was set. Refer to Paragraph 1.4.6.2.
“System Module” lists all standard and optional equipment connected to the system module. In this case, the
system has the standard printer, communications, video
controller with extended bit map option, and keyboard
interfaces; processor; memory management; and clock.
The floating point and 512K bytes of memory are also in
the system.

“Option Slot” lists the boards connected to the system
along with the location of each board. The number of
read /writes performed by the disk drives appears only in
service mode.

“Keyboard” shows the type of keyboard connected to
the system. The number of keystrokes appears only in
service mode. If it is available, DECtouch is also displayed
(version 3.0 and higher).

1.4.6.2 Running the Configuration Display Program in
Service Mode — Run the configuration display program in
service mode as follows.

1. Select the maintenance services menu.

2. Press F12, F19, and F5 in that sequence. This places
the program in service mode.

3. When the maintenance services menu appears on the
screen, select the configuration display program with
the cursor keys. Press Do.

4 Press Resume to return to the maintenance menu or
press F20 to set or reset the duty cycle start date.
NOTE

Pressing F20 erases all present duty cycle data.
NOTE

If testing a color monitor, you must select “Color monitor” in set-up mode before running
maintenance services (version 2.0 or lower).

TROUBLESHCOTING AND TESTING

1.4.7 Bar Pattern Program
The bar pattern program lets you place a bar pattern on
the screen. Use this program to adjust the operator monitor <ontrols. This program works with black-and-white
(mornochrome) and color monitors.
The bar pattern is made up of eight bars. Each bar is a
different color or shade of grey. If you have a color monitor, the colors are as follows (from left to right).
(dark)
Black

(light)
Blue

Red

Magenta Green

Cyan Yellow

White

NOTE
You must have an extended bit map

option

installed to use this program.

1.4.71

Running the Bar Pattern Program - Run the

bar pattern program as [ollows.
Select the bar pattern program with the cursor keys.
Press Do.

Wait for the bar pattern to appear on the screen. This
takes about five seconds.
Adjust the operator monitor controls.
Press Resume to return to the main menu.

1.4.7.2

Bar Pattern Program Results — The bar pattern

program is not a test. This program helps you adjust your

monitor for the best possible screen display.
1.4.8

Video Alignment Pattern Program

The video alignment pattern program runs only in service

mode and places another menu on the screen. You can
select the universal alignment pattern to align black-andwhite (monochrome) and color monitors. The alignment
pattern program also lets you select red, green, or blue

screens to make color monitor adjustments (an extended

bit map option must be present for color), or a white
screen to check purity.

TROUBLESHOOTING AND TESTING

1.4.8.1 Running the Alignment Pattern Program — Run
the alignment pattern program as follows. This program
works only in service mode.

1. Select the maintenance services menu.

2. Press F12, F19, and F5 in that sequence. This places
the program in service mode.

3. When the maintenance services menu appears on the
screen, select alignment patterns with the cursor keys.
Press Do.

4. Select the desired pattern. Press Doeo.

S. Press Resume to return to the alignment pattern
menu.

Update Maintenance Services

1.4.9

A software diagnostic diskette is shipped with most
options. This diskette contains software that runs as part
of the system unit test supplied with maintenance services.
You must first use the update maintenance services program to make this software a part of the system unit test.
The update program physically installs these other tests on
maintenance services diskette 2.

Update the system unit test to include an option’s diag-

nostics as follows.
NOTE

The update procedure must be done only once.
After you update the system unit test, the
option’s diagnostics run every time the system
unit test is rum.

1. Boot the system with the P/OS system diskette.
2. When prompted to load an application program,
remove the P/OS system diskette and place the
maintenance services application diskette in drive 1
and press Resume.

3. When prompted, insert maintenance services diskette
2 in drive 2 and press Resume.

4. Select “Update Maintenance Services” from the

maintenance services menu. Press Do. When prompted, place the option’s diagnostic diskette in drive 2.
Follow the directions on the screen.

1.4.10

Bigdisk Block Check

The bigdisk block check test determines if there are new
bad blocks on the hard disk. It only runs if P/OS is
installed on the hard disk.

TROUBLESHOOTING AND TESTING

The test reads data; it does not write data, so no data
will be destroyed.
NOTE
I fthe test fails, back up all important customer

files before reinstalling P/OS. If you do not
back up files before reinstalling P/OS, the customer will lose data.

The test is the same in customer and service modes,
although the screen display for the results i1s different.
In customer mode, the results summary tells you if no
corrupt blocks have been found, or if new corrupt blocks
have been found and P/OS must be reinstalled to update
the P /OS bad block file. Press Help for more information.
In service mode, the screen displays:
FOUND

HEAD:

P/0S BAD BLOCK FILE:
NEW CORRUPT BLOCKS:

XX
XX

If new corrupt blocks are found on any head, run the
test at least two more times to make sure the results are
consistent. If the disk is corrupt, back up files and reinstall
P/OS. If the results are inconsistent, the fault may be in
the hard disk drive controller or the read/write module
within the drive.
1.4.11 Minidisk Block Check
The minidisk block check test determines if there are new

bad blocks on a diskette. It only runs on P/OS initialized
diskettes.

The test reads data; it does not write data, so no data
will be destroyed.
NOTE
If the test fails, back up all important customer

files before reinitializing the diskette. If you do
not back up files before reinitializing the diskette, the customer will lose data.

The test is the same in customer and service modes,
although the screen display for the results 1s different. In
customer mode, the results summary tells you if no corrupt blocks have been found, or if new corrupt blocks have
been found and the diskette must be reinitialized to update
the bad block file. Press Help for more information.

TROUBLESHOOTING AND TESTING

In service mode, the screen displays:
NUMBER
IN

P/0S

BAD

BLOCKS
BLOCK FILE

NUMBER OF NEW
CORRUPT/ BAD
BLOCKS

F OUND
X X

If new corrupt blocks are found, run the test at least two
more times to make sure the results are consistent. If the
diskette 1s corrupt, back up files and reinitialize the dis-

kette. If the results are inconsistent, the fault may be in
the RX controller or the drive.
1.4.12

RX Speed Test

The RX speed test is a routine that checks the diskette
drive spindle motor speed to make sure the drive speed is

in tolerance. This test runs in service mode only. If the RX
controller is below the correct revision to run this test, the
following message appears.
Your

Floppy

Suppart

This

Drive

Controller

Does

not

Function

NOTE
This message does not mean there is a failure in
the system. It means the RX controller is not at
the revision level necessary to run the test.

If the RX controller is at the correct revision level to

run this test, the following message appears.
RX

SPEED

+/-

X.XX

CURRENT

TEST

SPEED

Run this test for five minutes before you record the
sample speed. If the sample speed is greater than +1.00 or
less than —1.00, the drive speed is out of tolerance. You
must replace the floppy diskette drive.

TROUBLESHOOTING AND TESTING

1.4.13

Fast Formatter

Torun the fast formatter, do the following.
Select the maintenance services menu.
2.

Press F12, F19, and FS in that order. This places the
program in service mode.

When the maintenance services menu appears on the
screen, select the hard disk formatter with the cursor.
Press Do.

Select the hard disk subsystem you want to format.
The subsystems are numbered in the submenu (if
more than one hard disk subsystem exists). The submenu numbers correspond to the physical location of
the hard disk controllers on the CTI bus. For example, hard disk subsystem number 1 refers to the subsystem physically located in the lowest numbered

slot. Hard disk subsystem number 2 refers to the
subsystem physically located in the next lowest num-

bered slot, and so on.
5.

While the test is running, the following message
appears on the screen.
FORMATTING

(in

reverse

FAST

video

and

flashing)

FORMATTER

The following message appears on the screen during
program verification.
VERIFYING

Creading)

(in

reverse

video

and

flashing)
FAST

FORMATTER

The final screen appears as follows.
Hard

Disk:

FAST

FORMAT

has

EXIT

Press
the

x.x

Maintenance

formatted

completed
MAIN

successfully

SCREEN

Services

Main

return

Menu.

1.5 NO RESPONSE AT POWER-UP
If the screen remains blank for more than two minutes,
restart the system by turning the system power switch off
and on.
Use Table 1-1 and the indicators on back of the system
unit to troubleshoot this problem. Table 1-2 lists the indicator error codes and related FRUs.

TROUBLESHOOTING AND TESTING

Table 1-1

No Response at Power-Up

Symptom

Additional Checks

Corrective Action

No response when Check power cord

Reconnect power

power switch is

connection to system

turned on

and wall outlet.

cord to system and

Circuit breaker

wall outlet.

tripped.

Reset circuit breaker by pushing it in.

No power at wall

Check power with

outlet.

your VOM.

Power cord shorted

Check power cord

or opened.

for continuity with

your VOM and
replace if needed.

Check power cable
connection from
power supply to sys-

tem module.
INo response when Green indicator on

Check power cable

power switch 1s

back of system unit

connection from

turned on, but

is off.

power supply to sys-

fan is running

tem module.
Replace system
power supply.

Green indicator 1s

Check monitor

on and four red

cable connections

indicators are off.

and adjust monitor
controls.
Reseat system

daughter boards, if
present.

Replace monitor.

Green indicator is

System has failed.

on and any or all of

Refer to Table 1-2

red indicators are

for the indicator

on.

error and related
FRU.

TROUBLESHOOTING AND TESTING

Table 1-2

Indicator Error Codes

Indica tor*
4 3
2 1
o

Error

Corrective Action

None

(test
passed)

Adjust contrast and brightness

controls on monitor,
2.

Check video cable connections
at monitor.

Check video alignment
(Chapter 3).

I/O

Replace monitor.

Replace system module.

Check all cables connected to

I/O board in slot 1.
2.

Reseat I/O board in slot 1.

Replace I/O board in slot 1.

Replace deviceconnectedto I/O

board in slot 1.
O

I/O

Check all cables connected to

I/O board in slot 2.
2.

Reseat I/O board in slot 2.

Replace I/O board in slot 2.

Replace device connectedto I/O

board in slot 2.
O

I/O

Check all cables connected to
1/O board in slot 3.

Reseat I/O board in slot 3.

Replace I/O board in slot 3.

Replace device connectedto I/O

board in slot 3.

I/O

Check all cables connected to

I/O board in slot 4.
2.

Reseat I/O board in slot 4.

3.
4.

Replace device connectedto I/O

Replace I/O board in slot 4.
board in slot 4.

I/O

Check all cables connected to

I/O board in slot 5.
Reseat I/O board in slot 5.

Replace I/O board in slot 5.

Replace device connectedto I/O
board in slot 5.

I/O

Check all cables connected to

I/O board in slot 6.
2.

Reseat I/O board in slot 6.

Replace I/O board in slot 6.

Replace device connected to I/ O

board in slot 6.
* A @ means indicator is on.

TROUBLESHOOTING AND TESTING

Table 1-2

Indicator Error Codes (Cont)

Indicator*
4

Error

Corrective Action

System

Restart system by turning system

If error disappears, run system

power switch off and on.
unit test on maintenance applica-

tion diskette.

If error remains, replace system
module.

System

Restart system by turning system

power switch off and on.
.

If error disappears, run system
unittest on maintenance applica-

tion diskette.
If error remains, replace system

module.
e

Keyboard

Check keyboard cable and
connections at keyboard and
monitor.
Check video cable at monitor

and system unit. Right angle end

of cable should be connected to
O

Replace keyboard.

[R—

video monitor.

Reboot from P/OS system

®@

No boot

Replace monitor.
Replace system board.

diskette.

If reboot is good, check RD hard
disk subsystem.
If still no boot, check for bad

diskette.
.

Check cables on RX50 and RD
hard disk subsystems from the

controller(s) to their drives.
.

Replace system module.
Refer to Paragraph 1.8.

Monitor

Check video cable and

not

connections at monitor and

present

system unit. Right angle end of
cable should be connected to
video monitor.

Replace monitor.

Replace system module.

TROUBLESHOOTING AND TESTING

Table -2

Indicator Error Codes (Cont)

Indic ator*
1
2
3

€

Error
System

Corrective Action
.

Restart system by turning system
power switch off and on.

If error disappears, run system

unitteston maintenance application diskette.

If error remains, replace system
module.

Extended

Restart system by turning system

power switch off and on.

bit map
daughter

If error disappears, run system
unit test on maintenance applica-

board

tion diskette.

If error remains, replace EBO
daughter card.

If error remains, replace system
module.

Memory

Restart system by turning system

power switch off and on.

daughter
board

If error disappears, run system
unit test on maintenance applica-

tion diskette.
.

Iferror remains, replace memory
daughter card.

If error remains, replace system
module.

System

Restart system by turning system
power switch off and on.

Iferrorremains, replace memory
daughter board, if present.

If error remains, replace system
module.

If error still remains, remove
option boards one at a time until
error changes. Replace last board
removed when error changes.

* A @ means indicator is on.

TROUBLESHOOTING AND TESTING

1.6

SYSTEM AND BOOT PROBLEMS

The system image with highlight and floppy display means
the power-up self-test found a problem and the system
cannot boot. Troubleshoot this problem as a system error.

Refer to Paragraph 1.7.
1.7

SYSTEM FAILURE WITH BOOT

The system image with highlight only display means the
power-up self-test found a problem, but the system boot-

ed. To troubleshoot, find the identification (ID) number
and error code in the message. Figure 1-2 shows the location of the codes. Table 1-3 lists each ID number, the error
code(s) for that ID, and the corrective action to take.

sLoT
NUMBER

ERROR
CODE

ID NUMBER

MA-0002-82A

Figure 1-2

Self-Test Diagram

TROUBLESHOOTING AND TESTING

Tablel-3

Error Codes

iD
Number

Error Problem
Code Area

Action

Any ID

0374

1. Reseat board in slot

Siot shown

Corrective

on screen

shown on screen.

Replace board in slot
shown on screen.

Any ID

00001

000014

0376

Replace system module.

Slot shown

Replace board in slot

on screen

shown on screen.

0060

Keyboard

Replace keyboard.

075

Keyboard

Run keyboard key test.

Replace keyboard.

0076

Keyboard

Replace keyboard.

Any

Keyboard port

Replace system module.

Printer port

Replace system module.

Any

Communications

Replace system module.

code

port

Any

Time of day

Replace system module.

Any

Nonvolatile

Replace system module.

code

RAM

Any

Interrupts

code

000017

Any
code

000021

000023

code

000024

000025

code

Disconnect any devices
from COMMI1 and PTR1
connectors.

Turn power on. If failure
goes away, problem is

with an attached device.

If failure remains, go to

step 3.

Remove all options.

Turn power back on.

If fails again, replace

If failure goes away,

system module.

install each option one at
a time until symptom
reappears. Replace last

board inserted.

000034

0002

Memory module

Memory exceeds 3 megabytes. Remove memory
modules until no error.

Any

Memory module

Replace board in slot

code

(in card cage)

shown on screen.

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

000041
(SSee

0001

DTMF loopback
failure

Replace TMS controller.

00602

CODEC

Replace TMS controller.

Notes 1
and 2

loopback failure

at end

of table) 0003

DTMF loopback

Replace TMS controller.

and CODEC
loopback failure

0004

Dial tone detect

Replace TMS controller.

failure

0005

Dial tone detect

Replace TMS controller.

and DTMF
loopback failure

0006

Dial tone detect

Replace TMS controller.

and CODEC
loopback: failure

0007

Dial tone detect,

Replace TMS controller.

CODEC
loopback, and
DTMF loopback

failure

0010

7910 modem

Replace TMS controller.

analog loopback

failure

0011

7910 modem

Replace TMS controller.

analog loopback
and DTMF
loopback failure
0012

7910 modem

Replace TMS controller.

analog loopback

and CODEC
loopback failure
0013

7910 modem

Replace TMS controller.

analog loopback,
CODEC
loopback and
DTMEF loopback

failure

0014

7910 modem
analog loopback
and dial tone

detect failure

Replace TMS controller.

TROUBLESHOOTING AND TESTING

Table -3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

0015

7910 modem

Replace TMS controller.

analog loopback,

dial tone detect,
and DTMF

loopback failure

0016

7910 modem

Replace TMS controller.

analog loopback,
dial tone detect,

and CODEC
loopback failure

0017

7910 modem

Replace TMS controller.

analog loopback,
dial tone detect,

CODEC loopback,
and DTMF
loopback failure

0020

Modem analog

Replace TMS controller.

loopback failure

0021

Modem analog

Replace TLL

loopback and

Replace TMS controller.

DTMF loopback
failure

0022

Modem analog

Replace TMS controller.

loopback and

CODEC
loopback failure
0023

Modem analog

Replace TMS controller.

loopback,

CODEC loopback,
and DTMF
loopback failure

0024

Modem analog

Replace TMS controller.

loopback and dial
tone detect failure

0025

Modem analog

Replace TMS controller.

loopback, dial

tone detect, and
DTMEF loopback
failure

0026

Modem analog
loopback, dial

tone detect, and

CODEC loopback

failure

Replace TMS controller.

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error

Problem

Corrective

MNumber

Code

Area

Action

0027

Modem analog

Replace TMS controller.

loopback, dial
tone detect,

CODEC loopback,
and DTMF
loopback failure

0030

Modem analog

Replace TMS controller.

loopback and

7910 modem

analog loopback
failure

0031

Modem analog

Replace TLL

loopback, 7910

Replace TMS controller.

modem analog

loopback, and
DTMF loopback

failure

0032

Modem analog

Replace TMS controller.

loopback, 7910
modem analog
loopback, and

CODEC loopback
failure

0033

Modem analog

Replace TMS controller.

loopback, 7910
modem analog

loopback,

CODEC loopback,
and DTMF

loopback failure

0034

Modem analog

Replace TMS controller.

loopback, 7910
modem analog
loopback, and
dial tone detect

failure

0035

Modem analog
loopback, 7910
modem analog
loopback, dial
tone detect, and

DTMF loopback
failure

Replace TMS controller.

TROUBLESHOOTING AND TESTING

Table 1-3
ID
Number

Error Codes (Cont)
Error Problem
Code Area

Corrective
Action

0036

Replace TMS controller.

Modem analog
loopback, 7910
modem analog
loopback, dial
tone detect,

and CODEC
loopback failure
0037

Modem analog

Replace TMS controller.

loopback, 7910
modem analog
loopback, dial
tone detect,

CODEC loopback,
and DTMF

loopback failure

0041

VU status

Replace voice unit.

request failure

Replace TLL

Replace TMS controller.

VU status

Replace TMS controller

request and

and voice unit.

DTMEF loopback
failure

0042

VU status

Replace TMS controller

request and

and voice unit.

CODEC
loopback failure

0043

VU status

Replace TMS controller

request, CODEC

and voice unit.

loopback, and
DTMEF loopback,

failure

0044

VU status

Replace TMS controller

request and dial

and voice unit.

tone detect failure

0045

VU status

Replace TMS controller

request, dial tone

and voice unit.

detect, and
DTMEF loopback

failure

0046

VU status

Replace TMS controller

request, dial tone

and voice unit.

detect, and

CODEC loopback
failure

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

0047

VU status

Replace TMS controller

request, dial tone

and voice unit.

detect, CODEC
loopback, and
DTMEF loopback

failure

0050

VU status

Replace TMS controller

request and 7910

and voice unit.

modem analog

loopback failure

0051

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, and

DTMEF loopback
failure

0052

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, and

CODEC loopback
failure

0053

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback,

CODEC loopback,
and DTMF

loopback failure
0054

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, and
dial tone detect
failure

0055

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, dial

tone detect, and
DTMF loopback
failure

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

0056

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, dial
tone detect,

and CODEC

loopback failure

0057

VU status

Replace TMS controller

request, 7910

and voice unit.

modem analog
loopback, dial
tone detect,

CODEC loopback,
and DTMF

loopback failure

0060

VU status

Replace TMS controller

request and

and voice unit.

modem analog
loopback failure

0061

VU status

request, modem
analog loopback,

Replace TLI and voice

unit.

Replace TMS controller.

and DTMF
loopback failure

0062

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,
and CODEC

loopback failure

0063

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,

CODEC loopback,
and DTMF

loopback failure

0064

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,
and dial tone
detect failure

0065

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,
dial tone detect,

and DTMF

loopback failure

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

0067

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,
dial tone detect,

CODEC loopback,
and DTMF
loopback failure

0070

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,

and 7910 modem
analog loopback

failure

0071

VU status

request, modem

analog loopback,

Replace TLI and voice
unit.

Replace TMS controller.

7910 modem
analog loopback,

and DTMF
loopback failure
0072

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,

7910 modem
analog loopback,
and loopback
failure

0073

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,

7910 modem
analog loopback,

CODEC loopback,
and DTMF
loopback failure
0074

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,

7910 modem
analog loopback,
and dial tone

detect failure

TROUBLESHOOTING AND TESTING

Error Codes (Cont)

Table 1-3
ID
Number

Error Problem
Code Area

Corrective
Action

0075

VU status

Replace TMS controller

request, modem

and voice unit,

analog loopback,

7910 modem
analog loopback,
dial tone detect,
and DTMF

loopback failure

0076

VU status

Replace TM'S controller

request, modem

and voice unit.

analog loopback,

7910 modem
analog loopback,
dial tone detect,

and CODEC
loopback failure

0077

VU status

Replace TMS controller

request, modem

and voice unit.

analog loopback,
7910 modem
analog loopback,

dial tone detect,
CODEC loopback,
and DTMF

loopback failure
0201

ROM failure

Replace TMS controller.

0202

RAM failure

Replace TMS controller

0204

Fraudulent

Replace TMS controller.

0210

Interrupt failure —

Replace TMS controller.

acknowledge now

0220

Interrupt failure —

Replace TMS controller.

kill

000042

0110

DECNA module

Replace DECNA

module.

less

0111

1. Test network hardware

Replace system module.

(Paragraph 1.15.4).

Any
code

CP/M module

000043

[u——

Replace board in slot
shown on screen.

TROUBLESHOOTING AND TESTING

Table I1-3

Error Codes (Cont)

Error

Problem

Corrective

Number

Code

Area

Action

000046

0001

Realtime

Reseat cables and board
in slot 6.

Replace module in slot 6.

interface (RTI) serial line unit 1

CAUTION

Turn off all devices attached to RTI cables before
turning system on again.
0002

RTI - serial line

unit 2

Reseat cables and board

in slot 6.
Replace module in slot 6.

0003

Reseat cables and board

RTI - parallel

I/0

in slot 6.
Replace module in slot 6.

0004

RTI- IEEE port

Reseat cables and board

in slot 6.
Replace module in slot 6.

0005

Reseat cables and board

RTI - interrupt

in slot 6.

logic

Replace module in slot 6.

000050

0002

PC380 base

thru

video failure

Replace system module.

0007

0103

PC380 EBO

0106

plane 2 failure

0107
0203

PC380 EBO

0206

plane 3 failure

module.
2.

Replace system module.

Replace EBO daughter
module.

0207

000064

Replace EBO daughter

Replace system module.

0001

Port 0

For all port problems.

0002

Port 0

1. Replace SLU option

0003

Port 1

2. Replace SLU intercon-

0004

Port 1

3. Replace SLU option

0005

Port 2

0006

Port 2

0007

Port 3

0010

Port 3

0020

SLU module

module.
nect box
cable.

0025

. Replace SLU module.
. Replace system module.

TROUBLESHOOTING AND TESTING

Table 1-3
ID

Error Codes (Cont)

Error Problem

Number Code
0030

Area
SLU module

0040

Corrective
Action
1. Replace SLU module.
2. Replace system module.

0100

Port O

For all port problems.

0102

Port 0

1. Disconnect device

0120

Port 1

attached to port

0140

Port 2

and retry. If problem

0142

Port 2

goes away, device is at
fault. If problem remains,

0142

Port 2

0160

Port 3

2. Replace SLU option

0162

Port 3

3. Replace SLU intercon-

go to step 2.
module.
nect box.

4. Replace SLU option

cable.

5. Check software.
000401

0001

1. Check cables.

Any

2. Replace board in slot

code

shown on screen.
3. Replace RD hard disk

drive. Verify that

either the read /write

board or complete disk
drive failed.
0013

RD subsystem

Format the disk.

0025
0030

0031
0032
0374

System

I. Replace board in slot
shown on screen.

2. Replace system module.

001002 Any

Power supply

1. Replace power supply.

(expansion box)

2. Replace load resistor.

Basic video

Replace board in slot

code

(in card cage)

shown on screen.

0374

System

1. Replace board in slot
shown on screen.
2. Replace system module.

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error Problem
ID
Number Code Area

Corrective

001403 Any
code

1. Check cable between
basic video and

Extended
bit map
(in card cage)

Action

extended bit map
boards.

2. Replace board in slot
shown on screen.

0374

System

1. Replace board in slot
shown on screen.

2. Replace system module.

002004 0001

RX subsystem

1. Replace board in slot

0002

shown on screen.

0003

2. Replace RX drive.

0210
0300
0310

0360
0370

0010
Any
code

RX subsystem

1. Insert initialized
diskette.

2. Check RX drive cables.
3. Replace RX drive.
4. Replace board in slot
shown on screen.

0374

System

1. Replace board in slot
shown on screen.
2. Replace system module.

10050
or
20050

0002
0002
0002

PC380
base video
failure

1. Replace system module.
2. Replace EBO daughter
module.

0007

0103
0106
0107

PC380
EBO
plane 2 failure

1. Replace EBO daughter
module.
2. Replace system module.

0203
0206
0207

PC380 EBO
plane 3 failure

1. Replace EBO daughter
module.
2. Replace system module.

30050

TROUBLESHOOTING AND TESTING

Table 1-3

Error Codes (Cont)

Error Problem
ID
Number Code Area
177776 0375

System

Corrective
Action
1. Check data cables.

2. Replace board in slot

0376

shown on screen.
3. Replace RD disk drive.
SN

. Replace power supply.
5. Replace load resistor.

0377

System

1. Check data cables.
[\

. Replace board in slot
shown on screen.

. Replace RD disk drive.

. Replace power supply.

. Replace load resistor.
. Replace system module.

NOTE 1

Error codes between 0001 and 0077 represent nonfatal errors and
indicate that parts of TMS can still be used. Check error code
problem area. If customer must wait for a replacement FRU,
explain which functions are still usable. See note 2 for details.
NOTE 2

Serial data mode requires that modem analog loopback, 7910
modem analog loopback (in non-U.S. versions of product), and
dial tone detect tests pass.

CODEC mode requires that CODEC loopback test passes. If
voice unit is used to dictate and store voice, VU status request test
must also pass.

DTMF mode requires that DTMF loopback test passes. This
applies to dialing functions and data transfers using DTMF tones.
Attended voice mode, at a minimum, requires that dial tone
detect test passes. The telephone set (supplied by customer)
always operates normally with no intervention from TMS. Even a
complete failure of entire option does not disable use of telephone.

TROUBLESHOOTING AND TESTING

1.8

BOOT PROBLEMS

The Digital logo and floppy display indicates the system

could not find a self-starting program on any

system

device. The system first looks at the diskette drive, then

the hard disk, and then the options (in slot order) for a
self-starting program.
To troubleshoot this problem, place a P/OS

system

diskette in a diskette drive. The system should erase the
diskette image from the screen and boot the program. Use
Table 1-4 if the problem remains.
1.8.1

Boot Failures

The Digital logo with numbers (none highlighted) and
floppy display indicates that the system found a bootable
device, tried to boot it, and failed partway through the
boot process.
To troubleshoot this problem, place a self-starting dis-

kette in the diskette drive. The system should erase the
diskette image. Run the system unit test from mainte-

nance services to determine the failure. If no failure is
found, restart the system. If the error remains, replace the

FRU/subsystem indicated by the first line of numbers to
the right of the Digital logo. The two leftmost digits in the
top line indicate the failing slot number. The last four
digits in the top line indicate the failing unit number.
1.9

SYSTEM SOFTWARE ERROR

The system image with no highlights display means the
system 1s functioning correctly, but it found an operating
system error.

Note the eight six-character error codes on the screen

and restart the system by turning the system power off

and on. These characters are software status codes. Do not
read them the way you read hardware error codes. If the
problem continues, try a different software diskette. The
diskette you have may be worn.

Sometimes a hardware failure produces a software
code. For this error, the top number in the display is
000300 or 000400.

Table 1-5 lists software status codes and corrective
action. These software status codes are for P/OS only.
1.10

KEYBOARD PROBLEMS

Table 1-6 lists possible keyboard problems and corrective
action.

TROUBLESHOOTING AND TESTING

Table 1-4

Boot Problems
Additional

Corrective

Symptom

Checks

Action

An image of a diskette

—

Place self-starting

is on the screen
under DIGITAL.

software diskette in
onediskette drive and
restart system.

If problem remains,

check all RX cables
and reseat RX [/O

(controller) board.

Replace I/O board.
Replace RX drive.

Replace system
module,

If problem goes
away, check primary

boot device

(Paragraph 1.8).

An image of a diskette

If the system is

The first two digits

is on the screen

connected in a

to the left on the top

under DIGITAL, and

network configura-

line of numbers

there are six sets of

tion, make sure

indicates the slot

numbers to the right of

that the DECNA

number that failed to

the diskette image.

identification

boot. Remove the

number is logged

option indicated by

at the host system.

this slot number,
place self-starting

software diskette in
one diskette drive,
and restart system.

If problem goes
away, replace module

previously removed.

If replacement
module fails, refer to
installation/owners
manuals for option

setup information.

If problem remains,
check all RX cables
and reseat RX I/O

(controller) board.
Replace I/O board.

Replace RX drive.

TROUBLESHOOTING AND TESTING

Table 1-5
Code

System Software Problems
Problem Area

Corrective Action

Top Line Status Codes
000100

P/OS keyboard handler

Check cables and

connections.

. Replace keyboard.
.

Replace system module.

Reload operating system.

000200

Check cables and

Terminal driver
(video subsystem and

connections.

Reseat option modules in

printer port)

card cage.
Reset all ICs in sockets on
system module.

Replace system daughter
boards, if present.
5.

000300

Executive/general

Replace system module.
Reload operating system.

If error occurred onfirst access
of RX or RD subsystem, check
that subsystem in following
order.

Check cables and reseat
controller in card cage.
2. Replace drive.
3. Replace RX or RD sub.

system controller.

If error was not on first access
of mass storage, go to 000200
corrective action.

000400

100400

processing

Verifying write-protect tab is
not on diskette. Go to 000300

Terminal driver

Go to 000200 corrective

System start-up

(video subsystem and
printer port)

corrective action.

action.

TROUBLESHOOTING AND TESTING

Table 1-5
Code

System Software Problems (Cont)
Problem Area

Second Line Error Codes (For informational purposes only)
000000

IOT in system state

000001

Stack overflow or cannot install task CBOQT

000002

Trace trap or breakpoint or cannot spawn task CBOOT

000003

Illegal instruction trap or cannot spawn task CMAIN

000004

Odd address or other trap to 4

000005

Segment fault

000006

A task on P/OS without a parent aborted

000007

EMT trap or required file not found

000010

TRAP trap

NOTE

These codes are for P/OS only.

Table 1-6

Keyboard Problems

Additional

Corrective

Checks

Action

Keyboard does

Check cables

Replace keyboard.

not work.

between keyboard and

Symptom

monitor, and monitor

and system unit.

Some keyboard

Check software

keys do not work.

program manuals.

This is not a problem.

These keys may not
work with this
program.

Run keyboard test

Replace keyboard.

on maintenance

application diskette.

Replace system
module.

TROUBLESHOOTING AND TESTING

1.11

PRINTER PROBLEMS

Table 1-7 helps isolate problems between the printer and
the systern. Use this table if the printer does not print.
1.12 COMMUNICATIONS PROBLEMS
Table 1-8 helps isolate problems between the communications device connected to the system and the system unit.
Use this table if the system has trouble using the communications port.

1.13

DESKETTE PROBLEMS

Table 1-9 helps isolate diskette problems. Use this table if
the systern has trouble reading and writing on the diskette
after the RX50 subsystem checks out.

1.14 HARD DISK PROBLEMS
Run the bigdisk block check test (Paragraph 1.4.10) to
check for bad blocks on a hard disk. This test only works
if P/OS 1s installed on the hard disk.

Table 1-7

Printer Problems
Additional

Symptom
Printer does not
work when you try
to print.

Corrective

Checks

Action

Check cable between

Replace cable.

printer and system
unit.

Check printer
controls.

Reset controls if
needed.

Run any printer
diagnostic programs.
Refer to printer’s

If test fails, follow
steps in printer’s
pocket service guide.

pocket service guide

for more information.

Run system unit test
in service mode
on maintenance

application diskette.
Use loopback
connector.

If test fails replace
system module.

TROUBLESHOOTING AND TESTING

Table 1-8

Communications Problems

Additional

Corrective

Checks

Action

Communications

Check cable between

Replace cable.

line is not working

system unit and

Symptom

correctly.

communications

device.

Make sure

Correct settings.

communications

feature settings
match settings at

other device.

Run system unit test

If test fails, replace

in service mode

system module.

on maintenance
application diskette.

Use loopback
connector.

Table 1-9

Diskette Problems

Symptom

Additional

Corrective

Checks

Action

System has trouble

Check diskette. Is it

Use a Digital diskette

reading and

the correct one to use

formatted for the

writing diskettes.

with your system?

Professional system.

Diskette may be

Try a new diskette.

worn.

Run system unit test

If test fails, trouble-

on maintenance

shoot according to

application diskette.

test results

(Paragraph 1.4.3).

If test runs correctly,
check customer’s
media for wear,
RE7TS:
R T

defects, and
compatibility.

TROUBLESHOOTING AND TESTING

1.15 TESTS FOR OPTIONS
This section provides special information for servicing different options. Refer to Table 1-3 for error codes and
corrective action. Remember to press Help for more
information.

1.15.1

CP/M Option

To use this option, P/OS must be version 1.5 or later.
1.15.2

Real-Time Interface

For the power-up self-test, turn off or disconnect all equipment connected to the real-time interface’s internal cable.
Do not turn on other equipment until tests are complete.
CAUTION

For the real-time interface test (service mode),
disconnect all equipment connected to the realtime interface’s internal cable. Test signals may
damage attached equipment.

P/OS must be version 1.7 or later. Errors with one port
on the module do not usually affect other ports.

1.15.2.1 Customer Mode - For P/OS version 1.7 or
later, you can select and run the real-time interface test
like other tests in the system unit test (if installed with the
update program). Refer to Paragraph 1.4.3 for information on how to run the test.
1.15.2.2 Service Mode — Press K12, F19, F5 and follow
the menu on the screen to select and run the the real-time
interface test.

CAUTION

Disconnect all equipment attached to the internal cable connector on the rear panel. If you
attach the loopback connector, select Loopback
Connector Installed from the real-time interface
test menu.

TROUBLESHOOTING AND TESTING

1.15.3

Telephone Management System

The telephone management system (TMS) needs P/OS
version 1.7 or later and the maintenance application dis-

kette. TMS has two diagnostic tests: the telephone management system test under the maintenance services menu
(Paragraph 1.15.3.1) and the PRO/TMS communications
test services (Paragraph 1.15.3.2)
1.15.3.1
Telephone Management System Test — If the
diagnostic program has been installed, this test runs when

you select the system unit test in customer mode. You can
select the test by itself in service mode from the system
unit test menu.
Test results are displayed like other test results in customer and service modes. Press Help for information and

corrective action.

1.15.3.2 PRO/TMS Communications Test Services This test has two parts: voice unit keypad test and remote
data loopback tests. Run this test as an application as
described in Paragraph 1.4.1.

The voice unit keypad test works only with the optional
voice unit. This test verifies each key on the voice unit
keypad. Follow the instructions on your screen. Press Help
at any time.

If you have an external microphone with or without a
foot switch, press the button to highlight the large part of
the footswitch diagram.
Replace the voice unit and any of its accessories until
the error indications are gone.

NOTE
Turn the power off before you remove or connect the voice unit, or you will reboot the
computer.

The remote data loopback tests exercise TMS by transferring data between your system and the Digital Custom-

er Services support system, or any other system with TMS

installed.
Follow the instructions on your screen. Press Help for
information. You will have to make a telephone call to the
customer support system, where you will receive more
information.
There are three kinds of tests in this group: data loopback, interactive, and long loopback.

TROUBLESHOOTING AND TESTING

The data loopback test is a continuity test for TIMS and
the telephone line.

The interactive test shows keyboard input on local and
remote units. This test is useful for testing a system with
one phone line.

If any errors are detected in either of these tests, rerun
the tests two times. If errors continue, do the long loopback test.

The long loopback test is a long test for TMS and phone
line integrity. This test displays bit error rate in service
mode.

In service mode, if the bit error rate at the end of the

test is less than or equal to 1.000 bit errors per 10°, then

the telephone lines are valid. If the bit error rate is greater

than 1.000 bit errors per 10°, perform the following procedure. (You must run this test four more times.)

1. Press Print Screen to get a copy of the screen display.
Write the date and time on the printout.
2. Run the test again.

3. Continue until you have five printouts or copies of the
screen display.

4. If at least two of the five tests show a bit error rate

greater than 1.000 bit errors per 10°, then replace the

TMS controller in the card cage and the telephone
line interface (TLI) on back of the card cage (Paragraph 2.12).

5. Run the test five more times and get five more
printouts.

6. If at least two of the five tests show a bit error rate

greater than 1.000 bit errors per 10, then there is a

problem with the telephone line. Leave the printouts
with the customer.

7. Tell the customer to call the telephone company to
report the problem with the telephone line.
NOTE

The telephone company guarantees telephone

lines that do not exceed 1.000 bit errors per 10°
bits, 80 percent of the time. The printouts are
evidence that this rate has not been met. Your
customer can order a conditioned data line at
additional cost from the telephone company.

TROUBLESHOOTING AND TESTING

1.15.4 DECNA Controller
The Digital Ethernet CTI Bus network adapter (DECNA)

uses the PRO/DECNA maintenance services. The
DECNA module works only with P/OS version 2.0 or
later.

Remove the transceiver cable and connect the loopback connector to the NET 1 connector on the rear

panel.

CAUTION
Do not connect or disconnect cables while the
test is rumning. You may damage the system

Select service mode from the maintenance services
menu by pressing F12, K19, and FS in that order.

module.

Select the system unit test. Press Do.
Select DECNA. Press Do.

Select a single pass test. Press Do.
Wait for the test results.

Press Help for information on errors and corrective
action. If the test passes, reconnect the transceiver cable
and perform the procedure for additional network devices,

in sequence (Figure 1-3).

NOTE
If the DECNA controller fails the power-up
self-test, leave the computer turned on for at
least two minutes. Then turn the power off and
on. If it does not fail the second time, disregard

the first failure. If it fails the power-up self-test
again,

replace

the

DECNA

controller

and

retest.

Refer to Chapter 4 for information about testing the
Digital Ethernet local network interconnect (DELINI) with

PRO/DECNA maintenance services.
1.16

THE ANALOG DATA MODULE (ADM)

The analog data module (ADM) is an optional data collection device, which is attached to the real-time interface
(RTI) module (Figure 1-4). The ADM features an 8-channel multiplexer, a 16-bit analog-to-digital converter, and a
16-bit digital input/output barrier strip.

TROUBLESHOOTING AND TESTING

NET 1

TRANSCEIVER
01

DELN|

T
NOTE:

POINTS 1, 2, 3, AND 4 SHOW LOOPBACK CONNECTOR TEST POINTS.
MA-1134-84A

Figure 1-3

DECNA Loopback Connector Test Points

MR-12835
MA-1404-84

Figure 1-4

Analog Data Module (ADM)

1.16.1 ADM Troubleshooting — System Unit Test
Before you determine that a problem exists in the ADM,
run the Maintenance Services System Unit Test. It is
assumed that you have already performed the maintenance services update to include the RTI diagnostics. The
ADM should be left on and connected if the loopback is
not installed during the system unit test.
If the system unit test does not report any errors, run
the ADM diagnostics to isolate the faulty ADM FRU, if
any.

TROUBLESHOOTING AND TESTING

1.16.2 FRU Isolation
The ADM has the following four FRUs.
Power supply
LED board

Motherboard
Digital I/O board

Figure 1-5 shows where these FRUs are located in the
ADM.

You can isolate faults to the FRUs with the help of the
ADM diagnostics and ADM test box (70-22016-01). The
test box derives its power from the +5-volt jack on the
ADM. The test box comes with a power cord, eight analog

connector cables, and a 20-conductor digital barrier strip
cable.

L
{/O BOARD
DIGITA

SUPPLY

Figure 1-5

ADM FRUs

TROUBLESHOOTING AND TESTING

1.16.3 Troubleshooting
Check the power supply first by viewing the LEDs on the
motherboard. You can see these LEDs by looking down
into the ADM chassis from the back. Both the red and
green LEDs should be on. If either LED is off, replace the
power supply.

If both LEDs are on, connect the test box and run the
ADM diagnostics as described in the following paragraph.
1.16.3.1

Connecting the Test Box - Connect the test

box as follows.
.

Turn off power to the ADM. Place the ADM test box

in front of the ADM. Connect the power cable for the
test box to the +5-volt jack on the ADM panel. Connect the analog cables from the test box to the ADM

analog channels in a one-to-one correspondence. That
is, connect channel 0 on the ADM to output O on the
___

test box. When correctly connected, no analog cable

should cross any other analog cable.
2.

Connect the digital cable from the test box to the
digital 1/O barrier strip. Use a small screwdriver or
ball-point pen to press in the red slot on the barrier
strip, then insert the wire in the hole. Release the red

tab to hold the wire. There are 20 connections to
make. Table 1-10 lists these connections.

3. Turn on power to the ADM. Check if the reference
LED on the test box is on. This LED is just above the
power input jack. If it is not on, and the ADM power
supply is good, the test box is not receiving +5-volt
power. The most likely cause is that the fuse on the
LED board is blown. In that case, you should swap
the entire LED board. If that does not correct the
problem, the +5-volt power cord or the test box itself
may be bad.
The reference LED, when on, indicates that the test

box reference voltages, used to produce output voltages, are within the required tolerance.

TROUBLESHOOTING AND TESTING

Table 1-10
ADMPC

Digital Cable Connections
Front

Connector*

Panel

Number

Label

Color

Signal

]

D IN GND

White

GROUND

D IN GND

Tan

GROUND

DINO

Black

DINTESTOH

DIN 1

Brown

DINTEST 1 H

5
6

DIN 2

Red

DINTEST 2 H

DIN 3

Orange

D IN TEST 3 H

D IN 4

Yellow

DINTEST 4 H

DIN 5

Lt. Green

DINTESTSH

DING6

Lt. Blue

D IN TEST 6 H

D IN 7

Violet

DINTEST 7H

D OUT O

Black/

D OUT TESTOH

White

DOUT 1

Brown/

D OUT TEST 1 H

White

D OUT 2

D OUT 3

DOUT 4

Red/Black
Orange/

D OUT TEST 2 H
D OUT TEST 3 H

Black

Yellow/

D OUT TEST 4 H

Black

DOUTS

Green/

D OUT TEST 5 H

Black

D OUT 6

Blue/

D OUT TEST 6 H

Black

D OUT 7

Violet/

D OUT TEST 7 H

Black

D OUT

Lt. Grey

GROUND

Pink

GROUND

GND

D OUT
GND

* Left to right on front panel connector

TROUBLESHOOTING AND TESTING

1.16.3.2 Running the ADM Diagnostic with Test Box Run the ADM diagnostic as follows, with the test box
connected.
1.

Make sure the test box reference LED is on, and the
test box 1s connected.

2. The ADM should be on and you should have previ-

ously run the system unit test to check the RTI
module.

Turn off power to the Professional.

. Insert the P/OS system diskette in the disk drive.
Turn on power to the Professional.

The Digital logo appears and the diagnostic prompts
you to load an application.

Insert the ADM diagnostic diskette and

press

Resume.

The diagnostic begins by

prompting you for

information.

When the diagnostic asks you if you want to run
conversions on multiplexer channel 0, type NO.
When the diagnostic prompts you to select analog
tests 22 through 29, enter ALL. When you select
ALL, the diagnostic takes one hour and five minutes
to run. Test 29 (differential linearity) takes one hour
to run.

. The diagnostic then prompts you to press Return
when ready. Before you press Return, type FSE.
10. The diagnostic then asks if the test box is connected.

Type YES.
11. The ADM diagnostic begins running. There are 29

subtests within the diagnostic. A subtest has run successfully when the message that the next subtest has
begun appears. Tests 1 through 21 take about five
minutes to run. Tests 22 through 29 are the analog
tests. Tests 22 through 28 take one minute each to
run. Test 29 takes one hour (maximum) to run. If a
test fails, an error message appears and the diagnostic
continues.

TROUBLESHOOTING AND TESTING

Run test 19 to check the LED board. The leftmost
LED, is the red reset LED. The next

LED is the
green sweep LED (indicated by >>>). The next eight

LEDS are the green analog channel LEDs.

Test

turns on the analog channel

LEDs in

sequence (channels O through 7). If any LED does not
come on, replace the LED board. The sweep LED is
on during tests 16 and 17. If the sweep LED does not
come on, replace the LED board.

13.

If no errors are reported, and the LED board was
okay (step 12) the ADM is working correctly. You do

not have to replace any FRU:s.

. If an error i1s reported, note the test number that
failed. If any test number other than 1 or 17 fails,

replace the motherboard.
15.

If test 1 or 17 fails, you must rerun the diagnostic
without the test box (refer to Paragraph 1.16.3.3). It

1s not necessary to disconnect the test box, just
answer NO when the diagnostic asks you if the test
box 1s connected. Enter NONE when the diagnostic

prompts you for ALL, NONE, or SUBSET.
16. If test 1 or 17 does not fail with the test box discon-

nected, the digital I/O board caused the fault the first
time. You should replace the digital I/O board. If test
1

fail

again,

you

should

replace

the

motherboard.
1.16.3.3 Running the ADM Diagnostic without Test
Box - If the test box is not available, you can still
troubleshoot the ADM. Run the diagnostics as described

above, but do not type FSE before you press Return to
start the diagnostic. The question “Is the test box connected?” does not appear. Tests 19, 20, and 21 do not run.
Select ALL when the diagnostic asks you to choose the
analog tests. If any test fails, replace the motherboard.
Without the test box, you cannot isolate faults to the LED

board or the digital 1/O board.

TROUBLESHOOTING AND TESTING

1.16.3.4 Power Supply Fault Isolation Summary — You
can isolate faults to the power supply by checking its LED
indicators. Do this by looking down into the ADM chassis
through the ventilation slots. The power supply is in the
right rear corner of the ADM (when you are facing the
ADM panel). Two LEDs are visible on the motherboard.
One LED is green, the other is red. Both the green and red
[_EDs should be on while power is supplied to the ADM. If
either LED is off, replace the power supply.
1.16.3.5 LED Board Fault Isolation Summary — When
diagnostic test 19 executes, the LEDs come on in sequence
from channel O through 7. Tests 16 and 17 turn on the
sweep LED. You can test the RESET LED by pressing
the RESET switch. (Do not do this while the diagnostic is
running.) If one of the LEDs does not come on, you should
replace the LED board.
The LED board also contains a fusible resistor, which
protects the +5-volt jack. If the reference LED on the test
box does not come on when you insert the power cord, and
the ADM is on and the power supply is good, you should
replace the LED board. The power reference LED on the
test box is just above the power input jack.
1.16.3.6 Mother Board Fault Isolation Summary - If
any ADM diagnostic test except test 1 or 17 fails, replace
the motherboard. If test 1 or 17 report an error, run the
diagnostic as described in Paragraph 1.16.3.2. If the failure reoccurs, replace the motherboard. If the failure does
not reoccur, replace the digital 1/O board.
1.16.3.7 Digital I/O Board Fault Isolation Summary The digital 1/O board is faulty if test 1 or 17 fails with the
test box connected, but does not fail when the test box is
disconnected.

TROUBLESHOOTING AND TESTING

1.17 SERIAL LINE UNIT OPTION
The PC3XC-BA quad serial line unit (SLU) provides the
Professional system with four additional serial ports to
connect peripheral devices. The SLU option consists of an
interconnect box, option module (in the system unit), and
option cable (Figure 1-6). One or two SLUS may be used
on the Professional. The interconnect box (or boxes) can
be attached to the back of the system unit using two
Velcro pads on each box.

The following paragraphs describe configuring and
troubleshooting the SLU.
1.17.1 SLU Configuration
The four I/O ports on the SLU interconnect box provide a
modem control selection capability as follows (Figure 1-7).

In configuration 2/2, two ports (1 and 3) have full
asynchronous modem support, while the other two
ports (0 and 2) have serial data line capabilities only.

In configuration 4/0, all four channels provide partial
modem control with a limited number of
input/output control signals.

To change the modem control configuration, plug the
option cable into the corresponding side connector in
the interconnect box. (See Figure 1-7.)
NOTES

1. Because the option cable is short, and to

make the modem control selection easier and
safer, the side connector on the interconnect
box should face the left. Everytime you
change SLU configuration, turn the box 180
degrees to have the required connector on
the left side of the box (Figure 1-7).

2. Notice the orientation of the 25-pin port
connectors on the interconnect box in relation to the SLU configuration selection (Figure 1-7).

TROUBLESHOOTING AND TESTING

QUAD SLU
INTERCONNECT BOX

SLU OPTION

SLU OPTION
MODULE

PUS MODULE {D 000064

MA.0158.85

SLU Option Kit

Figure 1-6

CONTROL

FULL

PORTS

CONTROL

SLU INTERCONNECT BOX

SLU OPTION CABLE

)

P VLI

o & l%
3
7,
=a

(] m
7007

\—_/
MA.0155-85C

Figure 1-7

SLU Configuration and Cabling

TROUBLESHOOTING AND TESTING

1.17.2 Power-Up Self-Test
The power-up self-test runs each time you turn on the
system. It checks the functionality of the SLU option
module only. For self-test indications and error codes, see
Paragraphs 1.3 and 1.7 and Tables 1-1, 1-2, and 1-3.
NOTE

The SLU module ID number is 000064.

1.17.3 SLU Service Diagnostic
This diagnostic tests the SLU module (like the self-test)
and also provides a way to loop back signals to check the
option cable and the connectors on the interconnect box.
To use the service diagnostic, you must update the Professional maintenance services using the PRO/Quad
Maintenance Services diskette supplied with the option.
NOTES
Maintenance services version 3.0 and later can
test multiple options with the same [D number.
If two SLUs are installed on a Professional,
both can be tested.
Earlier versions of maintenance services can

only test one option per ID code. So, the option
in the lowest numbered slot is tested. The others
are ignored.

You must remove the fromtmost SLU option
module from the card cage in order to test a
second SLU module.

To update maintenance services, proceed as follows.
1.

Load maintenance services, choose “Update maintenance services from the menu, and follow the
instructions.

Insert the PRO/Quad Maintenance Services diskette
in drive 2 when asked to do so.

After the update is completed, enter the service mode
(press the F12, F19, and FS keys) and check for quad
SLU on the system unit test listing.

To completely test the SLU option, install a loopback

connector (PN 29-24795-00) in each of the four SLU
ports. Then select “Loopback connector installed” and
“4-line SLU” from the system unit test selection menu.

TROUBLESHOOTING AND TESTING

NOTE
If the loopback connectors are not installed,

select only “4-line SLLU.” The resulting test still

determines whether errors originated in

the

option module or the interconnect box. Howevy-

er, it does not check the external I/0 connec-

tors (ports).
If faults occur during the system unit test, they are
shown in the summary at the end of the test. One or more

faulty ports may be called out. Ports that pass the test can
still be used.
If the error cannot be localized to a port, the option
module 1s at fault.
To check the probable error causes, press the Help key
for on-line assistance and see Table 1-3.

CAUTION
If the SLU diagnostic does not identify

the

faulty FRU by error codes, swap the components in the following order.

1. SLU option module
2. SLU interconnect box
3. SLU option cable

1.18

HARD DISK EXPANDER BOX OPTION

This option allows an additional RD5X hard disk drive in

a Professional 380 system. The option consists of an
expander box, a 120 V or 220 V power supply, a +5 V
load resistor, and data cables.
NOTE
A second disk controller module must be
installed in the system unit.

The expander box option is tested as the second RD5X

disk drive in the system, and both RD subsystems are
identified by slot numbers with the lowest number listed
first.

The power supply and +5 V load resistor are two possible failure causes in the RD subsystem. The +5 V load
resistor applies a continuous minimum load to the power

supply for its proper operation. The failing load resistor

can cause intermittent disk and power-up self-test errors.
The following

paragraphs

describe how

troubleshoot the expander box option.

you can

TROUBLESHOOTING AND TESTING

1.18.1 Power-Up Self-Test
The power-up self-test runs at every system power-up. It
checks the functionality of the option controller module
only. For power-up indications, see Paragraph 1.3 and
Tables 1-1 and 1-2. System faults and corrective actions
are described below. Errors found during the self-test are
isolated to the FRU.
Both RD subsystems have the ID number 000401
If the highlighted module has this ID code, check the
slot number to identify the faulty RD subsystem. Error
codes 0013, 0025, 0030, 0031, and 0032 indicate that the
RD disk is not formatted correctly.
1.18.2 Service Diagnostic
This is the same diagnostic you run when testing the builtin RD drive. Enter service mode through the maintenance
services menu. (Press the K12, F19, and F5 keys.) If the
Professional has two RD subsystems — one in the system
unit, the other in the expander box - they will both be

listed as ““Hard disk subsystem.” However, the RD subsystem with the lowest slot number will be listed and tested
first.
NOTES
Maintenance services version 3.0 and later lists
and tests multiple RD options with the same ID
code.

Maintenance services version 2.0 or earlier can

only test one option per ID code. So, the option

(module) in the lowest numbered slot is tested.
The others are ignored.
You have to remove the frontmost RD controller module from the card cage in order to test a

second RD subsystem.

TROUBLESHOOTING AND TESTING

Service mode lets you run all or part of the system unit
test. In service mode, the screen display lists the following
tests and programs.
System

unit

Keyboard
Printer

test

test
test

Configuration
Bar

patiern

Video

alignment

Update

block

Minidisk
RX speed
disk

program

pattiern

maintenance

Bigdisk

Hard

display

program

block
test

program

services

check
check

formatter

You can test any combination of RD subsystems. In the

system unit test, if you choose “All devices,” both RD
drives are tested with the rest of the system. The system
unit test summary screen lists the RD drives in the same

order as the selection menu.
If you press the Help key, the errors are listed in the
same order as in this summary screen.

The Professional system has two service mode features
that help in testing the RD drives. The expander box
option uses them as follows.
Hard Disk Formatter — This feature quickly formats a

new hard disk so the system unit test can be run on this
disk. You can choose it from version 3.0 of the service

mode test menu.
The hard disk formatter only formats one RD disk at a
time. Thus, you can only select one RD subsystem from
the submenu.
NOTE
Hard disk formatting is only a service feature
that allows you to run the system unit test. It

does NOT fully format an RD disk. You still
must use the standard formatting program
before using the disk with applications. The
hard disk formatter is only part of maintenance
services version 3.0.

TROUBLESHOOTING AND TESTING

Bigdisk Block Check — This feature determines if there
are new bad blocks on the hard disk. It is described in
Paragraph 1.4.10.
NOTE
If there are two RD subsystems, you will be
asked to specify which RD drive you want to be
checked. You select the hard disk subsystem to

be tested from the submenu displayed after you
select “Bigdisk block check.”

Table 1-3 lists the expander box option error codes and
corrective actions.

2.1

GENERAL

This chapter tells you how to remove and replace the field
replaceable units (FRUs) in the Professional system. Paragraph 2.17 provides the Recommended Spares List (RSL).
Appendix B contains exploded views of the FRUs. The
exploded view drawings provide location, part name, and
part number of each FRU.
CAUTION

Use a static protection kit (PN 29-11762-00)
when handling any internal components.

2.2

REMOVAL AND REPLACEMENT
PROCEDURES

Figure 2-1 shows all FRU removal procedures and the
sequence you must follow. For example, to remove any
I/O board from the system, you must remove the top
cover first. To replace an FRU, perform the removal steps
in reverse.

REMOVAL AND REPLACEMENT

EXPANDER BOX
PARA 2.15

SE—

TOP COVER

1/0 MODULES

PARA 23

PARA 2.12

QUAD sLU

PARA 2,16

RX50

DISKETTE

TMS

RIVE

PARA 2.4

REAL TIME

PARA 2.12.2

INTERFACE
PARA 2.12.1

RD HARD

RO HARD

DISK DRIVE

CTRLR
PARA 2.6

PARA 2.6
MONOCHROME

MONITOR
PARA 3.2.1

RD50/51 HARD

POWER

DISK DRIVE

SUPPLY
PARA 2.8

MONOCHROME

MONITOR

RD52 HQRD

READ WRITE

a':IKNDPC'BVE

MODULE

PARA 2.7.2

PARADY

COVER

)

PARA 3.2.2

SYSTEM

RD51 DIP SHUNT

MODULE

JUMPER

PARA 2.9

PARA 2.7.1

EBO AND RAM

DAUGHTER
BOARDS
PARA 2.10

BATTERY
PACK

PARA 2N

KEYBOARD
PARA 2.13
S

MA-1132-848

Figure 2-1

FRU Removal Sequence

REMOVAL AND REPLACEMENT

2.3

TOP COVER

Remove the top cover as follows.

1. Turn the system unit power switch off and remove
the ac power cord from the wall outlet and the power
receptacle on back of the system unit (Figure 2-2).
2. If the circuit breaker tripped, reset the circuit breaker
by pushing it in (Figure 2-3).

3. Close the diskette drive door(s) (Figure 2-4).

MA-0004A82

Figure 2-2

Power Switch and AC Power Cord

REMOVAL AND REPLACEMENT

MA-0004 882

Figure 2-3

Circuit Breaker

MA-0004C82

Figure 2-4

Diskette Drive Door(s)

REMOVAL AND REPLACEMENT

4. Find the two top cover releases and pull each release
to the front of the unit (Figure 2-5). The release
should move about 1/2 inch. To hold the release
open, move the pin into the locked position.
5. Grasp the top cover on each side and lift the cover
straight up (Figure 2-6).

MA-0004D82

Figure 2-5

Top Cover Releases

MA-Q004E82

Figure 2-6

Removing Top Cover

REMOVAL AND REPLACEMENT

2.4 RX50 DISKETTE DRIVE
Remove the RX50 diskette drive as follows. You need a
pen or similar object.

1. Remove top cover (Paragraph 2.3).
Disconnect the 1/0O cable and dc power cable from
the diskette drive. You can disconnect the 1/0 cable
by pulling straight up on the white cable pull (Figure

2-7).

MA-0005AU-82

Figure 2-7

1/0 Cable and DC Power Cable

REMOVAL AND REPLACEMENT

Find the release tab at the front center of the diskette

drive. Use a pen or similar object to push down on the
release tab, then slide the diskette drive assembly to

the front of the system unit (Figure 2-8).

Remove the diskette drive (Figure 2-9).

NOTE
The diskette drive is a single FRU. Do not disassemble the diskette drive or remove any
printed circuit boards. You must make all
adjustments in a special test configuration.

MA-Q005AV-82

Figure 2-8

Diskette Drive Release Tab

REMOVAL AND REPLACEMENT

MA-0005 AW-82

Figure 2-9

Removing Diskette Drive

2.5 RD HARD DISK CONTROLLER
There are two versions of the RD controller. One version is
for the RD50 and RD51. The other version is for the
RD52.

The RCD50 controller (PN 54-15134-00) is for the
RD50 and RD51. Do not use a controller with any other
part number for an RD50 or RD51. The RCD50 will not
work with RD52 drives.
The RCDS52 controller (PN 54-15134-01) is for the
RD52. Use this controller with RDS52s only.
The part number is printed on one side of the printed
circuit board. If the number is 54-15134 (the 00 extension
is assumed) this controller is for the RD50 and RD51. If
the part number has a 01 extension, this controller is for
the RD352.

REPVMOVAL AND REPLACEMENT

2.6

RD HARD DISK DRIVE

Remove the RD hard disk drive as follows. You need a
pen or sirnilar object.
1.

Remove the top cover (Paragraph 2.3).

Disconnect the two I/O cables from the I/O board.

You can disconnect each cable by pulling straight up
on the white cable pull (Figure 2-10).

Find the release tab below the front of the hard disk
drive. Use a pen or similar object to push down on the
release tab, then slide the hard disk drive assembly
about 2 inches to the front of the system unit (Figure

2-11).
4.

Disconnect the 4-wire dc power cable from the rear

of the hard disk drive (Figure 2-12).

MA-OOO5 AX-82

Figure 2-10

Disconnecting I/0O Cables from I/O Board

REMOVAL AND REPLACEMENT

MA-0005AY-82

Hard Disk Drive Release Tab

a— 9

Figure 2 -11

MA-0005A2-82

Figure 2-12

4-Wire DC Power Cable

REMOVAL AND REPLACEMENT

. Remove the hard disk drive by sliding it out of the
system unit (Figure 2-13).
NOTE

Replace the RD hard disk drive with the same
kind of hard disk drive (RD50, 5 megabytes, or
RD51, 10 megabytes).

MA-O005BA-82

Figure 2-13

2.7

Removing Hard Disk

RD50/51 HARD DISK DRIVE
READ/WRITE BOARD

Remove the RD350/51 hard disk drive read/write board as
follows. You need a small phillips screwdriver and a small
blade screwdriver.
NOTE

See Paragraph 2.7.2 for the RDS2 PC board.

1. Remove the top cover (Paragraph 2.3).

2. Remove the hard disk drive (Paragraph 2.6).
Use a small phillips screwdriver to remove the four
screws that hold the drive skid plate to the drive
(Figure 2-14). Remove the drive skid plate.

~ Use a small blade screwdriver to remove the four
screws that hold the read/write board to the disk
drive (Figure 2-15).

REMOVAL AND REPLACEMENT

MA-0006-82

Figure 2-14

Drive Skid Plate

MA-0007 A82

Figure 2-15

Read/Write Board

RE MOVAL AND REPLACEMENT

. Disconect the PS5 connector on the side
read /write board (Figure 2-16).

of the

CALTION

The cable connected to PS5 is fragile. Do mot
bend sharply or pull on the cable.
Disconect the P8, P7, and P6 connectors toward the

froretof the read/write board (Figure 2-17).

. Disconnect P4. This is a 2-wire connector on the rear
of the read /write board, next to the dc power connector (Figure 2-18).

Remmove the hard disk drive read/write board (Figure
2-19).

MA-0007882

Figure 2-16

PS5 Connector

MA-0007C82

Figure 2-17

P8, P7, and P6 Connectors

REMOVAL AND REPLACEMENT

Figure 2-18

MA-0007D82

P4 Connector

MA-O007EB2

Figure 2-19

2.7.1

Removing Read/Write Board

DIP Shunt Replacement (RD50/51 Hard Disk

Drive)

The read/write board on the RD50 and RD51 hard disk
drive has a dual in-line package (DIP) shunt. Make sure
the shunt is in place and looks like the one in Figure 2-20.
You can exchange the shunt from one RD51 read/write
board to another (Paragraph 2.6). Use a small blade
screwdriver to lift the shunt.
CAUTION
Be sure the 14-pin jumper shunt is positioned as
shown in the 16-pin socket.
WARNING

Be careful. The shunt pins are sharp.

FOR RD50

MA-0047A-84

REMOVAL AND REPLACEMENT

|I I

fllfm Oe-=Nm<< 0 ©
Pl

Figure 2-20 DIP Shunt Locations

MmN

[ /IK I\/I

FOR RDb51

O~ © W

REMOVAL AND REPLACEMENT

2.7.2

RDS52 Board

Remove the RD52 hard disk drive PC board as follows.
You need a phillips screwdriver.
NOTE
The screws that you will remove are different
lengths. You must reinstall them in the same
place.

1. Remove the top cover (Paragraph 2.3).
2. Remove the hard disk drive (Paragraph 2.6).

3. Use a phillips screwdriver to remove the four screws
that hold the drive skid plate to the drive (Figure 214). Then, remove the drive skid plate.
4. Remove the two phillips screws that hold the front
bezel to the drive (Figure 2-21).
5. With your fingers, unplug the two-pin connector near
the bezel on the main PC board (Figure 2-21).
6. Remove the bezel by carefully pulling away from the
drive. (The bezel is held in place with Velcro.)
7. Remove the remaining three phillips screws that hold
the PC board in place (Figure 2-21).
8. Lift the main PC board straight up until it is clear of
the chassis. This disconnects P4, the fixed plug at the
bezel end of the drive base casting (Figure 2-21).

9. Disconnect the 10-pin connector on the heat sink side
of the main PC board (Figure 2-21).

FRONT BEZEL

T0—PIN
PCB MOUNTING

SCREWS

CONNECTOR

SCREWS

MA-1381-84

Figure 2-21

Removing RD52 PCB

REMOVAL AND REPLACEMENT

10. Install the new PC board by doing steps 1 through 10
in reverse. Make sure that you line up connector P4

when installing the PC board. Put screws back in the

sam¢ places (there are four lengths). Check, and if
nec essary, set the drive address jumpers before you
reirzstall the drive. In the PC300 family, you should

address

-4
[&)]

instal address jumper DSI and remove
jumryers DS2, DS3, and DS4 (Figure 2-22).

TERMINATOR

DRIVE SELECT

DS1 DS2 DS3 D&S4

MA-1382-84

Figure 2-22

RDS52 Jumper Options

REMOVAL AND REPLACEMENT

2.7.3

RD31 Device Electronics Board

Remove the RD31

hard disk drive device

electronics

board as follows. You need a small phillips screwdriver
and a small-blade screwdriver.

CAUTION
Do not remove any of the screws that secure the

top cover (cover/filter assembly) to the base
casting. Removing any of the screws violates the

clean area.

Remove the top cover (Paragraph 2.3).

Remove the hard disk drive (Paragraph 2.6).

Use a phillips screwdriver to remove the four screws

that hold the drive skid plate with an attached ground
clip to the base casting (Figure 2-23). Then remove

the drive skid plate.

PHILLIPS
SCREWS

PHILLIPS

SCREWS

Figure 2-23

Drive Skid Plate

REMOVAL AND REPLACEMENT

Use a small-blade screwdriver to remove the three

screws that hold the device electronics board to the
disk drive (Figure 2-24).
CAUTION

When replacing the device, make sure you

replace the insulating washer at the front of the
unit.

5. Disconnect the J4, JS, and J6 connectors from the
device electronics board (Figure 2-25).
NOTE
The cables connected to J4, J5, and J6 are frag-

ile. Do not bend sharply or pull on these cables.

6. Install the new device electronics board by doing
steps 1 through 5 in reverse.
NOTE
When installing connector 5 to jack 5, notice
that jack 5 has nine pairs of pins, while connector 5 has eight pairs of slots. This connector
does not have a key and could be replaced incorrectly. Do not use the pin closest to the LED
(Figure 2-26).

CAUTION: MAKE SURE YOU REMOVE THE DEVICE

ELECTRONICS BOARD WASHER. A
WASHER ACCIDENTALLY DROPPED IN THE
DISK DRIVE COULD DAMAGE THE DRIVE.

NOTE:

IF T ISNECESSARY TO REPLACE ANY OF THE
DEVICE ELECTRONICS BOARD SCREWS, THESE
MOUNTING SCREWS MUST NOT EXTEND MORE
THAN 0.64 CM (0.25 IN) INSIDE THE DRIVE.

LJ-0694
SHR-0439-85

MA-0011-86

Figure 2-24

Device Electronics Board

REMOVAL AND REPLACEMENT

NOT USED

Figure 2-26

Installing Connector 5

MA-0010-86

RE MOVAL AND REPLACEMENT

Check the drive address jumpers and if necessary set

thembefore you reinstall the drive. You should install

a jurmper across pins 15 and 16 of the device electronics board (Figure 2-27).
NOTE

The RD31 should be set to Drive Select 1 (DS1)
for all Professional Series installations.

J3-4PIN—
POWER

CONNECTOR
J1-34PIN
CONNECTOR
RESISTOR
TERMINATION
PACK

J2—-20 PIN CONNECTOR

OOEOOO®E

OOOOOE

RADIAL ?EGU%

DS4DS3DSZDS1

RECOVERY

MODE

LIFE

TEST

J7-16 PIN CONNECTOR

(DRiIVE CONFIGURATION)

SHR.0418-85
MA -0007-86

Figure 2-27

Device Electronics Board Configuration

Components

REMOVAL AND REPLACEMENT

2.8 POWER SUPPLY
Remove the power supply as follows.

1. Remove the top cover (Paragraph 2.3).
2.

Disconnect the 16-pin system module power connector from the rear of the power supply. You can disconnect the cable by pulling straight back on the
white cable pull (Figure 2-28).

3. Disconnect the 4-pin mass storage device power connectors from the side of the power supply (Figure
2-29).

MA-0008 P-85

Figure 2-28

16-Pin System Module Power Connector

MA-0005BC-82

Figure 2-29

4-Pin Mass Storage Device Power Connector

REMOVAL AND REPLACEMENT

4. Find the two release clips on the side of the power
supply near the fan assembly. Pull each clip out (Fig-

ure 2-30).

5. Lift the power supply assembly out of the system unit
(Figure 2-31).
NOTE

The power supply is an FRU. You can replace
the fan if it becomes noisy (PN 12-13185-03).
The power supply is not adjustable and does not
contain replaceable circuit boards.
When you replace the power supply on the system chassis, push down in the center to latch it
in place.

2.9 SYSTEM MODULE
R emove the system module as follows. You need a pen or
similar object.

1. Remove the top cover (Paragraph 2.3).
2. Disconnect any cables connected to the rear of the
system module (Figure 2-32).

MA-00058D-82

Figure 2-30

Power Supply Release Clips

REMOVAL AND REPLACEMENT

MA-OO05BE-82

Figure 2-31

Removing Power Supply Assemb | y

MA-0008Q-82

Figure 2-32

System Module (Rear)

RENOVAL AND REPLACEMENT

3. Perforn this step only if you are replacing the
syster#t module. Remove all 1/O option boards from
the card cage (Paragraph 2.12).
NOTE
Discomnect any cables attached to option boards

from the top of the card cage. Also remove the
teleplr one line interface (TLI) board from the
rear of the system module if the telephone man-

agement system (TMS) is installed (Figure

2-33).
4. Discormect the diskette drive 1/O cable from the dis-

kette drive and the hard disk I/O cables from the
hard disk drive [/O board (Figure 2-34).

5. Find the release tab at the front center of each disk
drive. Use a pen or similar object to push down the

release tab, then slide each disk drive assembly about
2 inches to the front of the system unit (Figure 2-35).

MA-0005BF-82

Figure 2-33

1/0 Option Boards

REMOVAL AND REPLACEMENT

MA-O008R-82

Figure 2-34

Diskette Drive 1/O Cable and Hard Disk [/0

Cables

MA-0005BG-82

Figure 2-35

Sliding Out Disk Drive Assemblies

REMOVAL AND REPLACEMENT

6. Loosen the three captive screws that hold the system
module to the chassis (Figure 2-36).
7. Slide the entire system module to the rear of the

system cabinet about 2 inches (Figure 2-37). Disconnect the 16-pin power connector from the system
~module. You can disconnect the cable by pulling
straight up on the white cable pull (Figure 2-37).

8. Remove the system module from the chassis (Figure
2-38).

MA-Q005 BH-82

Figure 2-36

Captive Screws on Chassis

REMOVAL AND REPLACEMENT

MA-00058.-82

Figure 2-37

System Module and 16 Pin Power Connector

MA-00058K-82

Figure 2-38

Removing System Module

REFMOVAL AND REPLACEMENT

9. Usinga Velostat kit and wrist strap, find the socketed
identification PROM (E60) shown in Figure 2-39.

10. Use aflat-blade screwdriver to lift out the PROM at
location E60 (Figure 2-40).

1 1. With the notch to the left, carefully press the PROM
into the socket on the new board.
CAUTION

Press evenly. Do not bend the pins.

Figure 2-39

System ID PROM

REMOVAL AND REPLACEMIENT

NOTES
The system module may contain up to

two

option daughter boards. You must remove them
from the system module before returning the
module for repair (Paragraph 2.10).
Tell the customer to leave the Professional computer turned on for at least 48 hours. This will

fully charge the battery that powers the realtime clock and calendar on the system module.

MA-0704-84A

Figure 2-40

Removing and Replacing ID PROM

2.10

REMOVAL AND REPLACEMENT

EXTENDED BIT MAP AND MEMORY
DAUGHTER BOARDS

Remove either the extended bit map (EBO) or memory

daughter boards as follows.
1.

Remove the top cover (Paragraph 2.3).

Remove the system module (Paragraph 2.9)
Release the option daughter boards from

the four

plastic standoffs (Figure 2-41). The left board is the

extended bit option and the right board is the memory daughter module.

Pull each option daughter board up and off the sys-

tem module (Figure 2-42).
1.11

BATTERY PACK

Remove the battery pack as follows.
1.

Remove the top cover (Paragraph 2.3).

Slide the system module about 2 inches to the rear of
the cabinet, then disconnect the 2-wire battery pack
cable from the system module (Figure 2-43).

MA-00058BL-82

Figure 2-41

Releasing Option EBO Board

REMOVAL AND REPLACEMENT

389

MA-0005BM-82

Figure 2-42

Removing Option EBO Board

MA-Q008T-82

Figure 2-43

System Module and 2-wire Battery Pack Cable

REMOVAL AND REPLACEMENT

Open the battery pack holder and remove the battery
pack . The battery pack is mounted on the rear of the
card cage (Figure 2-44).
NOTE
Aftex you replace the battery pack, tell the customer to leave the Professional computer turned

on for at least 48 hours. This will fully charge

the battery that powers the real-time clock and
calendar on the system module.

MA-0008U-82

Figure 2-44

Removing Battery Pack

REMOVAL AND REPLACEMENT

2.12

I/0 BOARDS

Remove any I/0 board as follows.
CAUTION
Use a static protection kit (PN 29-11762-00)
when handling any internal components.

Remove the top cover (Paragraph 2.3).
NOTE
If you are removing the real-time interface
(handle ID number 000046), go to Paragraph
2.12.1.

If you are removing the telephone management

system (handle ID number 000041), go to Paragraph 2.12.2.
2.

Remove the three screws holding the cable cover/door to the card cage and remove the cable cov-

er/door (Figure 2-45).

MA-0044-84A

Figure 2-45

Cable Cover/Door

REMIOVAL AND REPLACEMENT

Disconnect any cables connected to the I/O board
throu gh the card cage slots. You can disconnect each

cable by pulling straight up on the white cable pull

(Figure 2-46).
NOTE

The

hard disk I/O board for an internally
moun ted hard disk drive must go in slot 1. The

real-time interface must go in slot 6.

Pull the I/O board handle out. The handle slides out
about 1 inch (Figure 2-47).
Turn the handle to the right 90 degrees, toward the

rear of the chassis (Figure 2-48). The pin-spreading
sound is normal for this type of connector.

MA-0008S-82

Figure 2-46

Cables Connected to /O Board

REMOVAL AND REPLACEMENT

MA-0005BA-82

Figure 2-47

1/0 Board Handle

MA-00058R-82

Figure 2-48

Turning I/0O Board Handle

REMOVAL AND REPLACEMENT

Slid<the I/O board straight out (Figure 2-49).

MA-OO0580-82

Figure 2-49

Sliding Out 1/0O Board

2.12.1

Real-Time Interface
Remove the real-time interface as follows.

Disconnect any device attached to the internal cable

62-pin connector. (This internal cable is only for the

real-time interface.)

Remove the internal cable by unscrewing the two
screws at the top of the cable and the two screws at

the bottom connector (Figure 2-50).

Slide the internal cable up to disconnect it from the
real-time interface.

REMOVAL AND REPLACEMENT

MA-0043-84A

Figure 2-50

Removing Internal Cable

REMOVAL AND REPLACEMENT

4. Remove the three screws that hold the combined card
cage shield-door to the card cage, then remove the
entire shield-door assembly by lifting it straight up
(Figure 2-51).

5. Pull the 1/O board handle out. The handle slides out
about 1 inch (Paragraph 2.12).
6. Turn the handle to the right 90 degrees. The pinspreading sound is normal for this type of connector.
7. Slide the real-time interface straight out.
Replace the real-time interface by following these steps
in reverse. The real-time interface must go in slot 6.
Let the power-up self-test run to completion before you
connect any external devices to the real-time interface.

MA-0044-848

Figure 2-51

Shield Door Assembly

REMOVAL AND REPLACEMENT

2.12.2 Telephone Management System (TMS)
TMS has two boards and may have accessories attached.
The TMS controller is inside the card cage. The TMS
telephone line interface (TLI) is mounted on back of the
card cage; it lifts straight up. The optional voice unit
connects to the TLI, and other accessories plug into the
voice unit.

2.12.2.1

TMS Controller - Refer to Paragraph 2.12.

2.12.2.2

Telephone Line Interface — Remove the TLI as

follows.

Disconnect any cables connected to the TLI.

2. Lift the TLI straight up (Figure 2-52).

kM A-00488-84

Figure 2-52

Telephone Line Interface (TLI)

REMOVAL AND REPLACEMENT

2.12.2.3

Voice Unit and Accessories — Remove the

voice unit and accessories as follows.

1. Disconnect the voice unit from the TLI (Figure 2-53).
2. Unplug the accessories from the voice unit (Figure
2-53).

2.13 KEYBOARD
Remove the keyboard as follows.

1. Turn system power off.

2. Disconnect the keyboard cable from the rear of the
monitor.
NOTE

The keyboard is a single FRU; replace the
entire keyboard.

MA-0049-84

Figure 2-53

Voice Unit

REMOVAL AND REPLACEMENT

2.14

REMOVING AND REPLACING THE

ANALOG DATA MODULE (ADM)
When you have isolated the faulty ADM FRU, perform

the following procedures to remove and replace it,

2.14.1

Opening the ADM Chassis

Open the ADM chassis as follows.

Turn off the on/off switch and remove the power
cord from the ADM.

Turn the ADM upside down.

Remove the four screws on the bottom of the ADM
(Figure 2-54).

MR-13248
MA-1405-84

Figure 2-54

Removing Screws from Bottom of ADM

100

REMOVAL AND REPLACEMENT

Turn the ADM right-side up again.

Remove the six phillips screws that hold the metal

shield on (Figure 2-55). Remove the shield. The interior of the ADM is now exposed. Figure 2-56 shows
the four FRUs.

MR-13250
MA-1406-84

Figure 2-55

Removing Shield

DIGITAL
I/O BOARD

MOTHERBOARD
POWER

SUPPLY

Figure 2-56

ADM FRUs

MR-13251
MA-1407-84

REMOVAL AND REPLACEMENT

101

2.14.2 Removing and Replacing the Power Supply
Remove and replace the power supply as follows.

1. Remove the plastic shield that protects the connectors by removing the two screws that hold it on
(Figure 2-57, step 1).
2. Disconnect the six cables from the cable connector
strip (Figure 2-57, step 2). Note that the cables are
color coded as shown in Table 2-1.

MR-13252
MA-1408-84

Figure 2-57

Table 2-1

Disconnecting Cables and Connector Strip

ADM Power Supply Cable Connections

Terminal

Color

AC*
AC*
RN
+5
-V
CM
+V

Blue
Brown
Black
Red
Blue
White
Orange

* The two ac connections come from the power cord input on the
front panel. The other connections are bundled together and
connect to the mother board.

102

REMOVAL AND REPLACEMENT

Remove the four screws that hold the power supply
from the bottom (Figure 2-58).

Replace the power supply by performing 1 through 3

[

in reverse.

MR-13253

MA-1409-84

Figure 2-58

Replacing Power Supply

2.14.3 Removing and Replacing the LED Board
Remove and replace the LED board as follows.
1.

Disconnect the cable from the LED board (Figure
2-59). Note the red edge.
The

5-volt jack is attached to the LED board.
Unscrew the nut that holds the jack to the front
panel, and remove the nut, metal washer, and fiber

washer (Figure 2-60). Inside the ADM, a swedge
washer seals the jack against the panel. Note the
ridge on the rubber washer when you remove it so
you can replace the washer correctly.

REMOVAL AND REPLACEMENT

103

MR-13254

MA-1410-84

Figure 2-59

Disconnecting Cable from LED Board

SWEDGE
WASHER

MR-12835

MA-1416-84

Figure 2-60

Removing 5-Volt Jack

104

REMOVAL AND REPLACEMENT

Remove the three screws that hold the LED board in

Replace the LED by performing steps 1 through 3 in
reverse. The red edge of the cable should be up.

place (Figure 2-61).

M R-13255

Mo-1411-84

Figure 2-61

Removing LED Board

2.14.4 Removing and Replacing the Motherboard

Remove and replace the motherboard as follows.
1.

Disconnect all cables from the motherboard (Figure

2-62). When you disconnect the connectors from the
analog channel inputs, note that there are two empty
sockets on the motherboard. These are the two left-

most connectors (while you are facing the back of the

ADM). When you reinsert the cables, start from the
right side and connect the analog channels
sequentially.
Remove the eight hex-nuts that hold the two serial

line unit connectors, the IEEE connector, and the
62-pin connector (Figure 2-63). These hex-nuts are on
(b

the ADM’s front panel.
Remove the seven screws that hold the motherboard

in place (Figure 2-64).
Replace the motherboard by

through 3 in reverse.

performing steps

REMOVAL AND REPLACEMENT

105

MR-13256

MA-1412-84

Figure 2-62

Disconnecting Cables from Motherboard

EIGHT HEX NUTS
MR-12835

MA-1417-84

Figure 2-63

Removing Eight Hex-Nuts

MR-13257
MA-1413-84

Figure 2-64

Removing Motherboard

106

RE MOVAL AND REPLACEMENT

2.14.5 Removing and Replacing the Digital 1/0 Board
Remove agd replace the digital 1/0O board as follows.

Discomnect the cable to the digital I/O board (Figure

Remove the five screws that hold the digital 1/0

2-65). Note the red edge on the cable.

board (Figure 2-66). The screw in the middle top of
the board has an insulating washer on it. Make sure
you save this washer and replace it when you replace

the board.
3.

Replace the digital I/O board by performing steps 1
and 2 in reverse. The red edge of the cable should be
on the right (while you are facing the back of the

ADM),

2.15

HARD DISK EXPANDER BOX

The PC3XA expander box includes three major assemblies that you may need to replace: the RD5X hard disk

drive, the power supply, and the load resistor assembly.
2.15.1

Hard Disk Drive

Replacing the optional disk drive requires disconnecting

the system data cables (Part A) and opening the expander

box (Part B).
NOTE
Turn off power to the system unit and expander

box.

REMOVAL AND REPLACEMENT

107

MR-13258
MA-1414-84

Figure 2-65

Disconnecting Cables from Digital 1/0 Board

D 'T -

Figure 2-66

Removing Digital I/O Board

108

RERMMOVAL AND REPLACEMENT

Systemn Cables

On the system unit, disconnect the data cables as follows.
1. Loosen the retaining screws and detach the external
data cable from the expander connector on the system unit (Figure 2-67).

MA-0328-85

Figure 2-67

Disconnecting Data Cable (on System Unit)

REMOVAL AND REPLACEMENT

108

2. Gain access to the 1/O card cage as described in
Paragraph 2.12. Disconnect the two internal cable
connectors from the hard disk option module (Figure
2-68).

MA-0326-858

Figure 2-68

Removing Internal Data Cables

110

REMOVAL AND REPLACEMENT

On the system unit backpanel, lift the retainer bar
and gently rock the data cable connector assembly

back and forth until you can lift it out of the expander box slot (Figure 2-69).
NOTE
If you need to replace the internal data cable
(PN 17-010089-01), detach it from the connec-

tor assembly. Use a nut driver or a small wrench
to remove the two screws that attach the cable
conmeector to the metal enclosure. Then, pull the
cable connector out of the connector assembly
box.

CAUTION
Do ot overtighten these screws when installing.
They may twist off and break. This can cause
intermittent errors or failure.

Figure 2-69

Removing Data Cable Connector Assembly

REMOVAL AND REPLACEMENT

111

Expander Box

On the expander box, remove the hard disk drive as
followss.

WARNING
Unplug the power cord from the expander box.

Lift the support bar. Remove the retaining screws
and unplug the data cable from the box connector
(Figure 2-70).

MA-0327-85C

Figure 2-70

Removing Data Cable on Expander Box

112

REMOVAL AND REPLACEMENT

Place the expander box on its back. Remove the four
cover screws (Figure 2-71).

Slide the cover up and off the expander box (Figure
2-72).

Return the expander box to its normal, horizontal

position. Press down the front release and slide the
drive halfway out of the expander box (Figure 2-73).

MA-0333-858

Figure 2-71

Removing Cover Screws

REMOVAL AND REPLACEMENT

MA-0334-85C

Figure 2-72

Removing Cover from Expander Box

Figure 2-73

Releasing the Drive

113

114

REMOVAL AND REPLACEMENT

Dis<onnect the power supply cable and the signal
cables from the disk drive (Figure 2-74).

SIGNAL
\,

CABLES

MA.-0323-868

Figure 2-74

Removing Optional Hard Disk Drive

REMOVAL AND REPLACEMENT

115

Remove the disk drive.
NOTE
If you have to replace the internal data cable,
use a nut driver or a small wrench to remove the

two screws that attach it to the expander box.

CAUTION
Do not overtighten these screws when installing.
They may twist off and break. This can cause

intermittent errors or failure.
2.15.2

Power Supply

Remove the power supply assembly (power supply and

fan) as follows.
1.

Remove the expander box cover (Paragraph 2.15.1,

steps 4 through 7).
2.

Disconnect the power supply and load resistor cables
(Figure 2-75).

POWER SUPPLY
CABLE

MA-0329-854

Figure 2-75

Disconnecting Power Supply and Load Resistor
Cables

116

REMOVAL AND REPLACEMENT

Place the expander box assembly on its back and

remove the four power supply mounting screws (Fig-

ure 2-76).
Put the expander box back into the horizontal position and remove the power supply by lifting it out.
On the power supply, remove the two top screws on

the fan/load resistor bracket (Figure 2-77). Next
slightly loosen the two bottom screws on the fan.
Then pull the bracket up (with the load resistor
assembly on it) and separate it from the power
supply.
When installing a new power supply, replace the load
resistor bracket on the power supply and connect the
cables.

Secure the fan to the power supply with the four
mounting screws.

R
~
A

8¢
2
&3
LA

fgk

&
ol

o8
o
ol

ée

Eg§

COVER

P
~

SCREWS

152

;

el \
sod

ced

“

oo}
¢

0
i;

%@q\\ COVER
SCREW

POWER SUPPLY

SCREWS

MA-0334-85A

Figure 2-76

Removing Mounting Screws

REMOVAL AND REPLACEMENT

2.15.3

117

Load Resistor Assembly

Replace the +5 V load resistor assembly as follows.
1.

Remove the expander box cover (Paragraph 2.15.1,

steps 4 through 7).
2.

On the power supply, detach the cable connector
from the load resistor (Figure 2-75).

Release and remove the two nuts holding the load
resistor to the bracket. Remove the load resistor (Figure 2-77).

tA-1162-85

Figure 2-77

Power Supply/Load Resistor Assembly

118

R EMOVAL AND REPLACEMENT

2.16

SERIAL LINE UNIT OPTION

Remove the SLU option as follows.

Inside th e system unit:

Gaina access to the 1/O card cage as described in
Paragraph 2.12,

Remove the two thumbscrews from the cable holddowm bracket (Figure 2-78) above the SLU option
mod ule slot (slot 6).

NOEE
For a second SLU option module (slot 5), the
second hold-down bracket is on top of the first

bracket.

CABLE
RESTRAINT

MA-0142A.85

Figure 2-78

Removing Internal SLU Option Cable

REMOVAL AND REPLACEMENT

119

Remove and save the cable egress cover by pressing
in on its tabs. Unclip the cable restraint and open it

away from the card cage (Figure 2-78).

Unplug the SLU option cable from the SLU option
module (Figure 2-79).

MA-0154-85A

Figure 2-79

Unplugging Internal SLU Option Cable

120

REMOVAL AND REPLACEMENT

On back of the system unit:

5. Remwove the communication cable(s) from the port
conniectors on the SLU interconnect box mounted on
back of the system unit (Figure 2-80).
6. Pull the SLU interconnect box from the back of the
system unit (Figure 2-80).
NOTE

The SLU box is attached to the system unit by
two self-sticking pads. When installing a new
box, first peel the paper off these pads.

A
%

FULL

PARTIAL

CONTRO L

RORTS

SLU INTERCONNECT BOX(ES)

Figure 2-80

SLU Option Cabling and
Interconnect Box

CONTROL

REMOVAL AND REPLACEMENT

121

On the SLU interconnect box, remove the two
thumbscrews and the hold-down bracket that attach
the option cable to the side connector (Figure 2-81).
Unplug the SLU option cable from the side connector
on the SLU box.

NOTE
When replacing the SLU option, make sure that

you connect the SLU option cable to the correct
side of the interconnect box as shown in Figure

2-81).

PARTIAL CONTROL

FULL CONTROL

(13-PIN SIDE)

(12-PIN SIDE)

(]

.—-1

7 -~

CABLE

HOLD-DOWN
BRACKET

MA-0138-85

Figure 2-81

Removing SLU Option Cable

122

REMOVAL AND REPLACEMENT

2.17 RECOMMENDED SPARES LIST
Table 2-2 is the recommended spares list (RSL) for the
basic Professional system and the ADM.

Table 2-2
Qty

Recommended Spares List

Description

Part Number

PC380 Sp ares

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
|
1
1

PC380 system module
KDJI1-CA
Power supply
H7862-C
RX50 diskette drive
RX50-AA
RXS50 controller board
54-15058-00
RX50 diskette drive signal cable
17-00285-00
DC power cable (system board)
17-00280-00
DC power cable, RD drive (4 in)
17-00342-01
DC power cable, RX drive (6 in)
17-00342-02
Video cable (2-1/2 ft)
17-00283-01
Video cable (6 ft)
17-00283-00
Modem cable (10 ft)
17-00289-00
Modem cable (25 ft)
17-00289-01
Modem cable (50 ft)
17-00289-02
Printer cable (10 ft)
17-00300-00
Printer cable (25 ft)
17-00300-01
Printer cable (50 ft)
17-00300-02
Printer cable (100 ft)
17-00300-03
Console cable (10 ft)
17-00301-00
Console cable (25 ft)
17-00301-01
Console cable (50 ft)
17-00301-02
X.21 communications cable (10 ft)
17-00302-00
AC power cable (125 V)
17-00083-09
AC power cable (250 V)
17-00083-10
Professional 300 system unit enclosure BASO-A
Floppy diskette kit
30-19448-02
Service kit suitcase
29-24198-00
Battery pack
12-19245-00
Communications port test connector
29-24795-00
29-24794-00
Printer port test connector
Fan
12-13185-03
Cable tie
90-07031-00

RCD50-A Spares

|
|
|
|
]

RD50 disk drive
RD50 disk drive read/write board
RD50 controller board
RD50 disk drive cable (20 conductor)
RD50 disk drive cable (34 conductor)

RD50-A
29-24112
54-15134
17-00282
17-00286

REMOVAL AND REPLACEMENT

Table 2-2
Qty

123

Recommended Spares List (Cont)

Description

Part Number

RD51-A Spares
RD51 disk drive with slide plate

30-20004-02

RD51 disk drive read/write board

29-24665-00

DIP shunt (used on RD50 and RD51)
Packaging container (used on RD50
and RD51)

99-90045-01

29-24115-00

RCDS52-A Spares

1
|
I
]
|
|
]
1
1
1
1

28 megabyte 5-1/4 inch
Main PCB for RD52-A
Address jumper
RD352 hard disk controller module
Data cable
Control cable
Motherboard
LED board
Digital I/O board
120 V power supply
Analog cable, 62 pin
20-pin ribbon cable for LED board
and Digital 1/0 board

RD52-A
29-24992-00
29-25007-00
54-15134-01
17-00282-00
17-00286-00
54-17659-01
54-17655-01
54-16368-01
30-23564-01
17-00692-01
17-00693-01

RD31 Spares

|
|
1
1

Device electronics board
20 Mb fixed disk
Jumper
Standoff

29-25527
RD31-A

12-14314-00
90-00001-39

V(C241-B Spares

Extended bit map option (EBO)

54-16239-01

daughter board

Color monitor cable (6 ft)

17-00284-00

VR201 Spares

Video monitor (white phosphor)

VR201-A

Video monitor (green phosphor)

VR201-B

Video monitor (amber phosphor)

VR201-C

124

REMOVAL AND REPLACEMENT

Table 2-2
Qty

Recommended Spares List (Cont)

Des«ription

Part Number

LK201 Spa xes
1

Keyboard (US)

LK201-A

Keyboard (UK)

LK201-AE

Keyboard (Germany)

LK201-AG

Keyboard (Holland)

LK201-AH

Keyboard (France)

LK201-AP

Keyboard cable

17-00294-00

Keycap removal tool

74-27314-01

CP/M Option Spare

CP/M softcard

54-15641-AA

Telephone Management System (TMS) Spares
DTC11-A

TMS controller board

54-15215-00

TMS TLI assembly

70-20405-00

Front plastic cover (for TLI)

74-28195-01

Rear plastic cover (for TLI)

74-28194-01

Telephone cable

PRO/TMS communications test

)

17-00089-01

ZBA-01-C3

services diskette
DTC11-B
1

Voice unit

DTCI11-B

Real-Time Interface Spares

Real-time interface module

54-15539-01

(PC3XX-AA)
1

Internal cable

Loopback connector

17-00404-01
12-21246-01

Connector pod (for PC3XX-AB)

70-20631-01

Connector cable (for PC3XX-AB)

70-00386-01

Serial line unit cable

17-00370-01

1
1
1
1

IEEE cable
Parallel cable
Card cage door-shield
PRO/real-time interface maintenance

17-00371-01
17-00379-01
74-28266-02

diskette

BL-X997B-BK

REMOVAL AND REPLACEMENT

Table 2-2

Qty

125

Recommended Spares List (Cont)

Description

Part Number

DECNA

1
1
1
1

DECNA module
Transceiver cable (16-1/2 ft)
Loopback connector

54-15987-01
17-00321-00
12-22196-01

PRO/DECNA maintenance diskette

ZBAQ03-C3

256-Kbyte Memory Option Spare
1

MSC11-CK memory module

54-15488-KA

512-Kbyte Memory Option Spare
1

MSC11-B memory daughter module

54-16234-LA

SLU Option Spares

1
1
1
1
1

Option module
Interconnect box
Option cable
PRO/Quad SLU
Maintenance service diskette

54-16622-01
70-22026-01
17-01042-01
ZBA06-C3

PC3XA Expander Box Spares

Power supply (120 Vac)

H7845-BA

1
1
|
1

Power supply (220 Vac)
Load resistor assembly
External signal cable
Internal (system unit) cable
Internal (expander box) cable

H7845-BB
70-22594-01
17-00484-01
17-01089-01
17-01090-01

VIDEO MONITOR
ALIGNMENT

3.1 GENERAL
This chapter describes the alignment of the VR201 video
monitor. Always check each adjustment, because many

adjustments affect each other. However, if a check shows

the correct indication, skip that adjustment and go to the
next procedure.
To perform the adjustments, you must use the video
alignment pattern program on the maintenance application diskette. Make all adjustments under the following

conditions.
®

Normal video (white characters on dark background)

80 characters per line

CRT alignment pattern on screen

NOTE
To adjust the VR241 color monitor, refer to the
VR241-A Color Video Monitor Pocket Service
Guide (EK-VR241-PS).
3.2

MONITOR ADJUSTMENTS

The following paragraphs list the alignment procedures for

the VR201 video monitor. Figure 3-1 shows the location
of all adjustments.
3.2.1

Removing the Monochrome Monitor

Remove the monochrome monitor as follows. (Refer to
Paragraph 3.2.3 for the monochrome monitor alignment.)
1.

Turn the system unit power switch off (Figure 3-2).

CAUTION
You must turn off the system unit power switch

before disconnecting the video cable. The CRT
anode will not discharge correctly if you do not
follow this step.

126

VIDEO MONITOR ALIGNMENT

FOC

BRIGHTNESS \ S|) N
CONTRAST

127

(INSERT TUNING WAND INTO

HEXAGONAL HOLE IN COIL TO
MAKE ADJUSTMENTS)

_ T2

' %

—— PH

fiii/j\\\VL
TM\

H
MA-1245-83

Figure 3-1

Video Adjustment Locations

MA-0004F82

Figure 3-2

System Unit Power Switch

128

VIDEO MONITOR ALIGNMENT

2. Disconnect the video and keyboard cables from the
rear of the monitor (Figure 3-3).
NOTE

You must clean the face of the CRT after you
finish with the monitor (cleaning fluid is PN
29-2 4791-00).

MA-000SA82

Figure 3-3

Monitor (Rear)

VIDEO MONITOR ALIGNMENT

3.2.2

129

Monochrome Monitor Cover

Remove the monitor cover as follows. You need a small
blade screwdriver and a small phillips screwdriver.
1.

Monochrome monitor (Paragraph 3.2.1)

NOTE
In step 1, place a piece of paper under the moni-

tor screen before turning it face down.
helps prevent scratches on the screen.
2.

This

Extend the tilt mechanism foot completely. Then,
carefully place the monitor face down on a flat surface. Use a small blade screwdriver to remove the
plastic cap that covers the retaining screw (Figure

3-4).

MA-0009G-82

Figure 3-4

Tilt Mechanism Foot and Retaining Screw Cap

130

VIDEO MONITOR ALIGNMENT

MA-0009C82

Figure 3-5

Retaining Screw

3. Use a phillips screwdriver to remove the screw that
holds the cover to the monitor chassis (Figure 3-5).
4. Remove the cover by sliding it straight up (Figure
3-6).
CAUTION
When you replace the monitor cover, make sure
the tilt mechanism foot is fully extended.
3.2.3 Preparations for Alignment
Prepare the monitor for adjustment as follows.

NOTE
In step 1, place a piece of paper under the monitor screen before turnming it face down. This
helps prevent scratches on the screen.
1. Place the monitor face down on a flat surface.

VIDEO MONITOR ALIGNMENT

131

MA-0008D82

Figure 3-6

Removing Cover

Remove the monitor cover (Paragraph 3.2.2).
CAUTION

Do not touch any components. High voltage is

present in the monitor.

. Return the monitor to its normal operating position.
Make sure the monitor is on a nonconductive surface
to avoid any electrical shorts.
Reconnect the video and keyboard cables to the
monitor.

Insert in drive 1 the P/OS diskette that came with
the maintenance service package.
Turn the system power switch on.

Follow the instructions on the screen (Paragraph
v.e)

1.4.7).

Turn the brightness and contrast controls to the minimum settings.

132

WIDEO MONITOR ALIGNMENT

9. Inctease the brightness control setting until the raster
appears on the screen.
10. Decrease the brightness control setting

until the

raster just disappears from the screen.
IT. Set the contrast control for

the desired

display

intensity.
12. Remove the P/OS diskette and insert the maintenarice application diskette into drive 1.
13. Enter service mode from the maintenance services

menu and select the alignment pattern (Paragraph
1.4 .8).
3.2.4

Vertical Hold

Adjust the vertical hold as follows.
1.

Examine the monitor display for rolling or any other
sign of vertical instability.

If necessary, adjust the vertical hold (VH) control to

stabilize the display.
3.2.5

Horizontal Hold

Adjust the horizontal hold as follows.
1.

Examine the monitor display for tearing or any other
sign of horizontal instability.

If necessary, adjust the horizontal hold (HH) control
to stabilize the display.

3.2.6

Focus

Adjust the focus as follows.
1.

Examine the crosshatch pattern at the four corners

and the center of the screen. Each line should be
sharp and well defined.
2.

If necessary, adjust the focus (FOC) control for the

best overall display.

VIDEO MONITOR ALIGNMENT

133

3.2.7 Vertical Centering and Rotation
Check the vertical centering and rotation as follows.

. Measure the distance in two places between the alignment pattern and the monitor bezel (Figures 3-7 and
3-8). Use the scale on the template for the measurements. Make a note of each measurement and compare both measurements. The difference between the
measurements should not be greater than + 2 mm. If
the difference is greater, go to step 4.

fl:
L

INEEEEEREEP

BEEEEREPZEEEEEEERNEER
N
HEEEPAERERENE
4
AN
k

\
\

]
LT
N
|
S

)

|
(

H
N

A
[

PLEASE PRESS RESUME TO CONTINUE

ailli{t]al!
MA-0046-84

Universal Alignment Pattern
(Maintenance Services Version 2.0 and Lower)

Figure 3-7

)
s

N
Ry

PLEASE PRESS RESUME TO CONTINUE

\k mmnhan

—/
MA-0013-86

Figure 3-8

Universal Alignment Pattern

(Maintenance Services Version 3.0 and Higher)

134

V IDEO MONITOR ALIGNMENT

Mea sure the distance between the top center edge of
the alignment pattern and the monitor bezel. Also
measure the distance between the bottom center edge
of the alignment pattern and the monitor bezel. Use

the scale on the template for the measurement.

Comzpare the measurements from step 2. The top
measurement must be larger than the bottom. The
difference between the two measurements must be
frome2 mm to 14 mm. If either condition is not met,
go tostep 4.

NOTE
The

clectrical center of the screen is not the
same as the apparent physical center of the
screen. When the monitor is adjusted correctly,

the screen display is offset toward the bottom of

the monitor screen.

If any of the measurements are out of tolerance,
replace the monitor assembly.
3.2.8

Horizontal Centering

Adjust the horizontal centering as follows.
1.

Measure the distance between the center left edge of

the alignment pattern and the monitor bezel. Use the
scale on the template for the measurement. Make a
note of the measurement.

Measure the distance between the center right edge
of the alignment pattern and the monitor bezel. Use
the scale on the template for the measurement. Make
a note of the measurement.
Compare the measurements from steps | and 2. If

the difference between the two measurements is
greater than 6 mm, adjust the horizontal phase (PH)
control.

Perform steps | and 2 again to verify the adjustment.

If necessary, check and adjust the aspect ratio (Paragraph 3.2.9).

VIDEO MONITOR ALIGNMENT

3.2.9

135

Aspect Ratio (Horizontal Width and Height)

Adjust the aspect ratio as follows.
I.

Select “White screen” in the alignment pattern
menu.

NOTE
Im the following steps, use a metric measuring

tape (PN 29-25342) to measure the dimensions
of the screen display. To avoid scratching the
monitor screen with the metal clip of the tape,
start the measurement at 10 cm (100 mm) as
shown in Figure 3-9.

2. Check the screen display for measurements of about
203 mm wide and 127 mm high. Proceed to step 3 if
adjustments are needed, otherwise go to step 5.

Adjust the horizontal width coil (HW) for a width of
203 mm by using a tuning wand (PN 29-23190-00).
Refer to Figure 3-1.

Adjust the height (H) control for a height of 127 mm.

Return to the alignment pattern menu and select
“Universal alignment pattern.”

Check that the circle on the universal alignment pattern appears to be round.

If necessary, readjust the horizontal width coil (HW)
or height (H) control to obtain the correct aspect ratio

(round circle).
8.

If necessary, check and adjust the horizontal centering (Paragraph 3.2.8) and vertical linearity (Paragraph 3.2.10).

3
127 MM

b’
L.(70010CMMM}
t
%

203 MM

\
Figure 3-9

Measuring the Screen Display

CM
1303303MM)!!

136

VIDEO MONITOR ALIGNMENT

3.2.10 Vertical Linearity
Adjust the vertical linearity as follows.
1.

Check the height of the crosshatch pattern near the
four corners of the display. The pattern should have
the same height in all four corners.
If necessary, adjust the vertical linearity (VL) control
until the pattern is the same height in all four corners.
If necessary, check and adjust the aspect ratio (Para-

graph 3.2.9).

TESTING AND
TROUBLESHOOTING
THE DELNI UNIT
GENERAL
4.1
This chapter tells you how to test a DELNI unit with the
PRO/DECNA maintenance services and the loopback
connector that comes with the DECNA controller. With
this test, you can also test the Professional computer, the
DECNA controller, a DELNI unit, and the transceiver
cable if the DELINI unit is attached to another DELNI
unit or transceiver. Use the test if, on power-up, the error
code shown on the monitor screen is 0111 or greater.
Refer to Paragraphs 1.4.1 and 1.15.4 for instructions on
how to run the PRO/DECNA maintenance services.
Before you test, make sure the green power-on indicator
on the DELNI panel is on.
CAUTION
Tell everyone using the metwork that you are
testing the DELNI unit and that they will be
disconnected from the network until you are
finished. The network users will not be able to
transfer messages.

4.2

TESTING THE DELNI UNIT
Use the following procedure to test the DELNI unit.
1.

Disconnect all cables from the DELNI unit, including
the one attached to the Professional computer. Keep
aside

the cable

that

goes

the

Professional

computer.

NOTE
If the DELNI unit uses the ninth connector,

disconnect the ninth connector also.
2.

Attach the DECNA loopback connector to connector

9 on the DELNI unit. Set the Standalone/Connected
switch in the connected position (up).

137

138

TESTING AND TROUBLESHOOTING DELNI UNIT

Using only the 5 meter (16.4 feet) cable attached to
the Professional computer, connect the cable to each

DELNI connector, in'turn, and run the DECNA test.
CAUTION

Make sure the test is not running whenever you
connect or disconnect the transceiver cable to or

from the DELNI unit.
If any DELNI connector indicates an error on the test
summary, the connector is defective and should not be

used. You can still use the DELNI unit, except for the

defective connector, until you get a replacement.
NOTE
If the DELNI unit connects to a H4000 transceiver, make sure the green indicator on the end

of the loopback connector lights. If it does not
light, power is not reaching the transceiver, and
the transceiver cannot operate.

4.3

TESTING THE TRANSCEIVER CABLE

Use the following procedure if the DELNI unit is connected to another DELNI unit, or a transceiver, in a two-tier

or connected DELNI local area network (LAN).
If you get an error indication on the DECNA and
DELNI tests, use the following procedure. It tests the

transceiver cable that connects the first DELNI unit to
another DELNI unit or transceiver.
Use only one Professional computer connected to the

first DELNI unit.
1.

Set the Standalone/Connected switch in the connected position (up).

Remove the end of the transceiver cable from the
second DELNI unit or transceiver.

Attach the loopback connector to this end of the
cable and run the DECNA test.
NOTE
If the DELNI unit connects to a H4000 transceiver, make sure the green indicator on the end

of the loopback connector lights. If it does not
light, power is not reaching the transceiver, and
the transceiver cannot operate.

TESTING AND TROUBLESHOOTING DELNT

UNIT

139

If the test runs successfully, the transceiver cable is
good and the second DELNI unit or transceiver is faulty.

You can test the second DELNI unit with the same
procedure for a single DELNI unit. Do not wuse the loopback connector. The second DELNI unit acts as a loop-

back connector. Move the cable from one connector to the
next. You can still use this DELNI unit with a defective

connector until you get a replacement. If this test runs
successfully, then the transceiver is faulty.
4.4

SOFTWARE PROBLEMS

In some situations, your network software may not be
operating correctly. This can cause problems in transfer-

ring data and files. Make sure the latest version of your
network software is installed. Contact your network manager or Digital for assistance.

RELATED
DOCUMENTATION
The following is a list of related hardware documentation
for the Professional 300 series.
Professional 300 Series Technical Manual

Kernel System (Volume I)
Options (Volume II)
Real-Time Interface Module/Analog
Data Module Technical Manual

EK-PC300-V1
EK-PC300-V2

EK-PCRTI-TM

These manuals describe the Professional 325, 350, and
380 computer systems and options to a detailed block
diagram level. These manuals do not contain detailed schematic drawings. The Professional 380 Field Maintenance
Print Set has detailed schematic drawings and is ordered
separately.

Professional 350 Illustrated

EK-SB350-1P

Professional 380 Illustrated

EK-SB380-1P

Parts Breakdown (IPB)

These documents provide a detailed parts breakdown of
the Professional’s field replaceable units (FRUs). The following documents do not contain part numbers for components on the printed circuit boards. However, components
are listed in the Professional 380 Field Maintenance
Print Set, which is ordered separately.
DECNA Field Maintenance Print Set
[L.K201 Keyboard Field Maintenance
Print Set

KDJ11-C Field Maintenance Print Set
V(C241-B Field Maintenance Print Set
MSC11-B Field Maintenance Print Set
PC3XS CP/M Softcard Field
Maintenance Print Set

140

MP-01895-01
MP-01395-00

MP-01957-01
MP-01970-01
MP-02003-01
MP-01730

APPENDICES

PC3XX Real-Time Interface Module
Field Maintenance Print Set
Professional 380 Field Maintenance
Print Set

Telephone Management System Field
Maintenance Print Set
VR 201 Monochrome Monitor Field
Maintenance Print Set

141

MP-01713

MP-01922-01
MP-01654-01
MP-01410-00

Each print set provides a complete set of electrical and
mechanical schematic drawings.

FRU EXPLODED VIEW

PROFESSIONAL

SYSTEM UNIT
ENCLOSURE

(TOP AND BOTTOM)

CABLE SHIELD

bAoA

74-27726-01

EXTENDED BIT MAP

OPTION (EBO) CABLE
17-00303-00
RD DISK DRIVE CABLE
{20 CONDUCTOR])
17-00282-00

RXB0 DISKETTE

RD DISK DRIVE

DRIVE SIGNAL

CABLE

RX50

DISKETTE

s.
g 7

DRIVE
RX50-AA

RD50/51

DISK DRIVE

READ/WRITE BOARD
29-24112-00

RD52 MAIN PC BOARD
29-24992-00

(FRONT VIEW)

DC POWER CABLE (6 IN,)
(RX DRIVE)
17-00342-02

RD DISK DRIVE

DC POWER CABLE

RD50A

RD51

(RD DRIVE]
17.00342-01

mfiosz

\/
EXTENDED BIT MAP OPTION (EBO) BOARD

54-16239-01

RX50 CONTROLLER BOARD

54-15058-00

RD50/51

54-15134-00

CONTROLLER BOARD

RD52 CONTROLLER BOARD

54-15134-01

CP/M

54-15641-AA

REAL-TIME INTERFACE

54-15539-01

TMS CONTROLLER

54-15215-00

DECNA CONTROLLER

54-15987-00

MA-0706-844

Figure B-1

Professional 380 FRUs (Exploded View)

(Sheet 1 of 3)

APPENDICES

DOOR-SHIELD
(FOR REAL-TIME
2

INTERFACE)
74-28266-02

RX50 DISKETTE DRIVE
RX50-AA

REAL-TIME INTERFACE
INTERNAL CABLE
17-00404-01

TMS TLI
70-20405-00

BATTERY PACK
12-19245-00

MODEM CABLE

PROFESSIONAL
SYSTEM UNIT
ENCLOSURE

17-00289-00 (10 FT)
17-00289-01 ( 25 FT)
17-00289-02 ( 50 FT)

(TOP AND BOTTOM)
BAS50-A

OR
X.21 COMMUNICATIONS
CABLE

AC POWER CABLE

(125V) 17-00083-09
(250V) 17-00083-10

17-00302-00 ({ 10 FT)

DC POWER CABLE
(SYSTEM MODULE)

17-00280-00
VIDEO CABLE
REAL-TIME INTERFACE

17-00283-01 (2.5 FT)

CABLES (LIST)

17-00283-00 (6 FT)

INTERNAL

17-00404-01

SERIAL LINE UNIT

17-00370-01

|EEE

17-00371-01

PARALLEL

17-00379-01

( PRINTER CABLE
17-00300-00 ( 10 FT)

17-00300-01 ( 25 FT)
17-00300-02 ( 50 FT)

————fi
CONNECTOR POD
CONNECTOR CABLE

17-00300-03 ( 100 FT)
OR

70-20631-01

CONSOLE CABLE

70-00386-01

17-00301-00 ( 10 FT)
17-00301-01 ( 25 FT)
.

17-00301-03 ( 50 FT)
MA-1142-84A

Figure B-1

Professional 380 FRUs (Exploded View)
(Sheet 2 of 3)

143

144

APPENDICES

256 KB RAM

BOARD

54-15488-KA
512 KB RAM

BOARD

54-16234-LA

EBO BOARD
54-16239-01

MA-00OOSBP-82

VR201 VIDEOMONITOR
«

VR201-A (WHITE PHOSPHOR)

*VR201-B (GREEN PHOSPHOR)

VR201-C (AMBER PHOSPHOR)

KEYBOARD CABLE

17-00294-00

LK201 KEYBOARD

LK201-AA (US)
LK201-AE (UK)

LK201-AG (GERMANY)
LK201-AH (HOLLAND)
LK201-AP (FRANCE)

TTMMS

VOICE UNIT

DTC11-B

HEADSET

DTC11-XH

FOOTSWITCH

DTC11-XF

EXTERNAL MIC

DTC11-XM
MA-0046-84

Figure B-1

Professional 380 FRUs (Exploded View)

(Sheet 3 of 3)

C FUNCTIONAL DIAGRAM
SYSTEM MODULE CONNECTOR PINS
AND SIGNALS

Battery Connector - J3
Pin

1
2

436V
Ground

Neolie JEN Mo WV, BF SRV IS LS

DC Power Connector — J4

10
11
12
13
14
15
16

BDCOK
KEY

BPOK

—12 Vdc

+12 Vdc
+5 Vdc
+5 Vdc
+5 Vdc
+5 Vdc
Ground
Ground
Ground
Ground
Ground
Ground
Ground

Nolle sBEN Re WU TN SN US R 00

VIDEO1 Video/Keyboard Interface — J5
Blue return
Green return

Red return
Mono return

Ground
Ground
+12 Vdc
+12 Vdc
Blue video signal

145

146

APPENDICES

Green video signal

Red video signal

Mono video signal

Mon Present

KBD RDATA

KBD TDATA

PRT1 Serial Printer Interface Connector — J6

Pin
o
2
e
N

Data set ready

Data terminal ready

Signal ground

Not used

Ground

Receive data

Protective ground
Transmit data

Terminal (L)

COMMI Communications Interface — J7
Pin

Protective ground

Transmit data

Receive data

Request to send (RTS)

Clear to send (CTS)

Data set ready (DSR)

Signal ground

Carrier detected (CD)

Not used

Speed mode indicator (SPDMI)

Not used

Transmit clock (STC)

Not used

Receive clock (RXC)

Local loopback (LL)

Not used

Data terminal ready (DTR)

Remote loopback (RL)

Ring indicator (RI)

Data signal rate select (DSRS)

Transmit clock (TXC)

Test indicator (TI)

APPENDICES

NET1 Network Interface — J9

Shield
Collision presence +

Transmit +

Not used
Receive +

Power return

Not used

D OO

ON L

o b

Not used
Collision presence —
Transmit —
Not used
Receive —

+12 Vdc
Not used
Not used

147

149

APPENDICES

SYSTEM
BUS
EXPANDER BOX

sgle

BATTERY (J3)

MONOCHROME

MONITOR BOARD

(J5)

—

0000

LINE INTERFACE

(TLI)

PTR1 COMM1
J7
(J7)

(J6)

INDICA.-

Tors

| SYSTEM MODULE

KEYBOARD

:
|

{

Bt
B
l ERROR |

Co e
e

OR TELEPHONE
VIDEO 1

PO
'? l :\fj

NET 1

V] : E

(J9)

»0

L
VEM

/7\|=3/

e
—0

—

]

|
BOARD

RX50

DRIVE

ID=002004

|
—0

DCOK POK +12 +5~12(J4)l
W

R/W

RX50

CONTROLLER

)

1D=000401

{

DRIVE

E : L

CONTROLLER

)

CP/M
MODULE
ID #000043

POWER

FAN

SUPPLY

[

:
+5

’@

MEMORY
MODULE
ID #000034

I
REAL-TIME

INTERFACE
MODULE
NOTE1

ID #000046

NOTE 3

oy TMS

CONTROLLER

VOICE

UNIT

TLI

ID #000041

(OPTIONAL)

DECNA
CONTROLLER

ID = 000042
NOTES
1. 6 SLOTS ONLY ON BUS

2. USE SLOT 1 OF BUS

QUAD

SLOT
6 ONLY

SLU

ID # 000064
MA-00128-82

Figure C-1

Functional Block Diagram