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Document:	R400X Expander Installation and Maintenance
Order Number:	EK-349AA-MG
Revision:	001
Pages:	134
Original Filename:

OCR Text

R400X Expander Installation
and Maintenance
Order Number EK–349AA–MG–001

Digital Equipment Corporation
Maynard, Massachusetts

First Printing, December 1990
The information in this document is subject to change without notice and should not be
construed as a commitment by Digital Equipment Corporation.
Digital Equipment Corporation assumes no responsibility for any errors that may appear in
this document.
The software, if any, described in this document is furnished under a license and may be used
or copied only in accordance with the terms of such license. No responsibility is assumed
for the use or reliability of software or equipment that is not supplied by Digital Equipment
Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer
Software clause at DFARS 252.227–7013.
Copyright ©1990 Digital Equipment Corporation All rights reserved.
Printed in U.S.A.
The Reader’s Comments form at the end of this document requests your critical evaluation to
assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation.
DEC, DECmate, DECnet, DECsystem 5400, DECsystem 5500, DECUS, DECwindows,
DECwriter, DELNI, DEQNA, DESTA, DIBOL, DSSI, MASSBUS, MicroPDP–11, MicroVAX,
MicroVMS, PDP, P/OS, Professional, Q-bus, Rainbow, RSTS, RSX, RT, ThinWire, ULTRIX,
UNIBUS, VAX, VAX 4000, VAXBI, VAXcluster, VAXELN, VAXstation, VMS, VT, Work
Processor, and the DIGITAL logo.
Velcro is a registered trademark of Velcro USA, Inc.

FCC NOTICE: The equipment described in this manual generates, uses, and may emit radio
frequency energy. The equipment has been type tested and found to comply with the limits for
a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such radio frequency interference when operated in
a commercial environment. Operation of this equipment in a residential area may cause
interference, in which case the user at his own expense may be required to take measures to
correct the interference.

S1413

This document was prepared using VAX DOCUMENT, Version 1.2.

Contents
Preface

Chapter 1 R400X Expander Description
1.1
1.2
1.3
1.4
1.5
1.6
1.6.1
1.6.2
1.7
1.8

Opening the Front Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mass Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSSI Connection and Bus Configuration Area . . . . . . . . . . . .
SCSI Connection Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–4
1–9
1–10
1–12
1–13
1–13
1–14
1–17
1–18

Chapter 2 Installation
2.1
Verifying Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1
Tools Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Unpacking the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
Positioning the Expander . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4
Configuring the DSSI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5
Installing Storage Devices . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.1
Installing RF- and RZ-Series ISEs . . . . . . . . . . . . . . . . . . .
2.5.1.1
Inserting Bus Node ID Plugs . . . . . . . . . . . . . . . . . . . . .
2.5.1.2
Labeling RF-Series ISEs for Systems with Multiple
DSSI Busses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2
Installing a TLZ04 Tape Drive . . . . . . . . . . . . . . . . . . . . . .
2.5.2.1
Inserting the TLZ04 Bus Node ID Plug . . . . . . . . . . . . .
2.6
Installing Additional Components . . . . . . . . . . . . . . . . . . . . .
2.6.1
Installing the KFQSA Adapter . . . . . . . . . . . . . . . . . . . . . .

2–2
2–2
2–3
2–5
2–6
2–6
2–7
2–10
2–11
2–12
2–15
2–16
2–17

iii

2.7
2.7.1
2.7.2
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16

Connecting DSSI Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transferring or Attaching the DSSI Terminator . . . . . . . .
Connecting a DSSI Cable . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting SCSI Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Power Bus Cables . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Ground Cables . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the KFQSA Adapter and the Expanded System .
Programming ISE Unit Numbers for Systems with Multiple
DSSI Busses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Closing the Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Postinstallation Requirements . . . . . . . . . . . . . . . . . . . . . . . .

2–17
2–18
2–19
2–29
2–33
2–36
2–37
2–40
2–42
2–43
2–43
2–43

Chapter 3 FRU Removal and Replacement
3.1
List of R400X Expander FRUs . . . . . . . . . . . . . . . . . . . . . . . .
3.2
Initial Procedure to Access FRUs . . . . . . . . . . . . . . . . . . . . . .
3.3
Removal Procedures for R400X FRUs . . . . . . . . . . . . . . . . . .
3.3.1
Replacing RF-/RZ- Series ISEs . . . . . . . . . . . . . . . . . . . . . .
3.3.1.1
Removing an ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1.2
Replacing the ISE Front Panel Module . . . . . . . . . . . . .
3.3.1.3
Replacing the Interface Card Assembly . . . . . . . . . . . . .
3.3.1.3.1
Removing the ISE Upper Bracket . . . . . . . . . . . . . . .
3.3.1.3.2
Removing the Interface Card Assembly . . . . . . . . . . .
3.3.1.4
Replacing the Remote Front Panel Cable . . . . . . . . . . . .
3.3.1.4.1
Removing the ISE Lower Bracket . . . . . . . . . . . . . . .
3.3.1.4.2
Removing the Remote Front Panel Cable . . . . . . . . . .
3.3.2
Replacing the TLZ04 Tape Drive . . . . . . . . . . . . . . . . . . . .
3.3.2.1
Removing the TLZ04 Tape Drive . . . . . . . . . . . . . . . . . .
3.3.2.2
Replacing the ID Cable . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2.3
Replacing the TLZ04 Front Panel Module . . . . . . . . . . .
3.3.2.4
Replacing the Interface Card Assembly . . . . . . . . . . . . .
3.3.2.4.1
Removing the Upper Mounting Bracket . . . . . . . . . . .
3.3.2.4.2
Removing the Interface Card Assembly . . . . . . . . . . .
3.3.2.5
Removing the Lower Mounting Bracket . . . . . . . . . . . . .

3–1
3–3
3–4
3–5
3–5
3–8
3–9
3–9
3–11
3–12
3–12
3–12
3–13
3–14
3–16
3–17
3–18
3–18
3–20
3–21

3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9

Removing the Status Panel . . . . . . . . . . . . . . . . . . . . . . . .
Removing the SCSI Connector Module . . . . . . . . . . . . . . . .
Removing the DSSI Jumper Assembly or a DSSI Connector
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . .
Removing the R400X Backplane . . . . . . . . . . . . . . . . . . . .
Installing a Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–22
3–23
3–25
3–25
3–27
3–32
3–36

Appendix A DSSI Cabling for BA200-Series Enclosures or
Earlier Systems
Appendix B Programming Parameters for RF-Series ISEs
B.1
B.2
B.3
B.4
B.5
B.6
B.7

RF-Series ISE Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . B–1
Entering the DUP Driver Utility . . . . . . . . . . . . . . . . . . . . . . B–6
Setting Allocation Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–7
Setting Unit Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–8
Setting Node Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–10
Setting System ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–10
Exiting the DUP Server Utility . . . . . . . . . . . . . . . . . . . . . . . B–11

Appendix C Related Documents

Index
Examples
B–1
B–2
B–3
B–4
B–5
B–6
B–7

SHOW DSSI Display (Embedded DSSI) . . . . . . . . . . . . . . . . . B–5
SHOW UQSSP Display (KFQSA-Based DSSI) . . . . . . . . . . . . B–6
Starting the DUP Driver Utility (Embedded DSSI) . . . . . . . . B–7
Starting the DUP Driver Utility (KFQSA-Based DSSI) . . . . . B–7
Setting Allocation Class for a Specified ISE . . . . . . . . . . . . . . B–8
Setting a Unit Number for a Specified ISE . . . . . . . . . . . . . . B–9
Changing a Node Name for a Specified ISE . . . . . . . . . . . . . . B–10

B–8 Changing a System ID for a Specified ISE . . . . . . . . . . . . . . .
B–9 Exiting the DUP Driver Utility for a Specified ISE . . . . . . . .
B–10 SHOW DSSI Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B–11 SHOW UQSSP Display (KFQSA-Based DSSI) . . . . . . . . . . . .

B–11
B–12
B–12
B–13

Figures
1–1
1–2
1–3
1–4
1–5
1–6
1–7
1–8
1–9
1–10
1–11
1–12
2–1
2–2
2–3
2–4
2–5
2–6
2–7
2–8
2–9
2–10
2–11
2–12
2–13
2–14

R400X Expander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R400X Mass Storage Areas . . . . . . . . . . . . . . . . . . . . . . . . . .
RF-Series ISE Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .
RZ-Series ISE Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .
TLZ04 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R400X Single DSSI Bus Configuration . . . . . . . . . . . . . . . . . .
R400X Double DSSI Bus Configuration . . . . . . . . . . . . . . . . .
R400X SCSI Bus Configuration . . . . . . . . . . . . . . . . . . . . . . .
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sample Power Bus Configuration . . . . . . . . . . . . . . . . . . . . . .
Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R400X Expander Shipping Carton Contents . . . . . . . . . . . . .
Moving the Expander into Place . . . . . . . . . . . . . . . . . . . . . .
Removing and Installing a DSSI Jumper or Connector
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing an RF- or RZ-Series ISE . . . . . . . . . . . . . . . . . . . .
Inserting Bus Node ID Plugs . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching a Unit Label to the ISE Front Panel . . . . . . . . . . .
Installing the TLZ04 Tape Drive . . . . . . . . . . . . . . . . . . . . . .
Inserting Bus Node ID Plug for TLZ04 Tape Drive . . . . . . . .
Removing a DSSI Terminator . . . . . . . . . . . . . . . . . . . . . . . .
Attaching a DSSI Terminator . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting a DSSI Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded Dual-Host VAX 4000 Model 300 System with
One R400X Expander and No ISEs in the Host Enclosures
(Bus 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded Dual-Host VAX 4000 Model 300 System with One
R400X Expander and ISEs in the Host Enclosures (Bus 0) . .
Expanded Dual-Host VAX 4000 Model 300 System with Two
R400X Expanders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–3
1–4
1–5
1–7
1–8
1–11
1–12
1–13
1–15
1–17
1–18
2–4
2–5
2–6
2–9
2–11
2–12
2–14
2–15
2–18
2–19
2–20
2–21
2–22
2–23

2–15 Expanded Single-Host VAX 4000 Model 300 System with One
R400X Expander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–16 Expanded Single-Host VAX 4000 Model 300 System with Two
R400X Expanders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–17 Expanded Single-Host VAX 4000 Model 300 System with
Three R400X Expanders . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–18 Expanded Single-Host VAX 4000 Model 300 System with
Four R400X Expanders . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–19 Expanded VAX 4000 Model 200 (BA430) or DECsystem 5500
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–20 Expanded Dual-Host VAX 4000 Model 200 (BA430) . . . . . . . .
2–21 Removing the SCSI Connector Covers . . . . . . . . . . . . . . . . . .
2–22 Connecting the SCSI Terminator and Cable . . . . . . . . . . . . .
2–23 Expanded DECsystem 5500 . . . . . . . . . . . . . . . . . . . . . . . . . .
2–24 Expanded VAX 4000 SCSI Cable Connection . . . . . . . . . . . . .
2–25 Sample BA400-Series Power Bus Configuration . . . . . . . . . . .
2–26 Connecting a Ground Cable . . . . . . . . . . . . . . . . . . . . . . . . . .
2–27 Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–28 Connecting the Power Cable to the R400X Expander . . . . . .
2–29 Connecting the Power Cable to the System . . . . . . . . . . . . . .
2–30 Setting the Power-Up Mode or Operation Switch . . . . . . . . . .
3–1 Locations of Field-Replaceable Units (FRUs) . . . . . . . . . . . . .
3–2 Removing an ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 Removing an ISE Front Panel Module . . . . . . . . . . . . . . . . . .
3–4 Removing Bracket Screws . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Removing the ISE Upper Bracket . . . . . . . . . . . . . . . . . . . . .
3–6 Removing the Interface Card Assembly . . . . . . . . . . . . . . . . .
3–7 Removing the Remote Front Panel Cable . . . . . . . . . . . . . . . .
3–8 Removing the TLZ04 Tape Drive . . . . . . . . . . . . . . . . . . . . . .
3–9 Removing the ID Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–10 Removing the TLZ04 Front Panel Module . . . . . . . . . . . . . . .
3–11 Removing Bracket Screws . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–12 Removing the Upper Mounting Bracket . . . . . . . . . . . . . . . . .
3–13 Removing the Interface Card Assembly . . . . . . . . . . . . . . . . .
3–14 Removing Lower Mounting Bracket . . . . . . . . . . . . . . . . . . . .
3–15 Removing the Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . .
3–16 Removing the SCSI Connector Module . . . . . . . . . . . . . . . . . .

2–24
2–25
2–26
2–27
2–28
2–29
2–30
2–31
2–32
2–33
2–35
2–37
2–38
2–39
2–40
2–42
3–4
3–7
3–8
3–10
3–11
3–12
3–13
3–15
3–16
3–17
3–18
3–19
3–20
3–21
3–22
3–24

vii

3–17
3–18
3–19
3–20
3–21
3–22
3–23
3–24
3–25
3–26
3–27
A–1
A–2
A–3
A–4
A–5
A–6
B–1

Removing a DSSI Jumper or Connector Assembly . . . . . . . . .
Removing the Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Power Supply Cord . . . . . . . . . . . . . . . . . . . . .
Discharging the Power Supply . . . . . . . . . . . . . . . . . . . . . . . .
Removing Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Speed Control Jumper . . . . . . . . . . . . . . . . . . . . . . . . . .
Outer Shell Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded MicroVAX 3900, MicroVAX 3600 or DECsystem
5400 Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded MicroVAX 3400, 3500, 3800 or DECsystem 5400
Pedestal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expanded VAX 4000 Model 200 (BA215) or MicroVAX 3300 .
Expanded MicroVAX II (630QY, 630QZ) . . . . . . . . . . . . . . . . .
Expanded MicroVAX II (630QB) . . . . . . . . . . . . . . . . . . . . . . .
Expanded MicroVAX II (630QE) . . . . . . . . . . . . . . . . . . . . . . .
Attaching a Unit Number Label to the ISE Front Panel . . . .

3–25
3–26
3–27
3–29
3–30
3–31
3–32
3–34
3–35
3–36
3–38
A–2
A–3
A–4
A–5
A–6
A–7
B–9

Tables
1–1
1–2
1–3
1–4
3–1
3–2
B–1

viii

RF-Series ISE: Controls and Indicators . . . . . . . . . . . . . . . . . 1–6
TLZ04 Drive Indicators (Normal Conditions) . . . . . . . . . . . . . 1–9
TLZ04 Drive Indicators (Abnormal Conditions) . . . . . . . . . . . 1–9
R400X Power Supply Controls and Indicators . . . . . . . . . . . . 1–15
R400X Expander FRUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
R400X Expander Power Cables . . . . . . . . . . . . . . . . . . . . . . . 3–2
How the VMS Operating System Identifies the ISEs . . . . . . . B–4

Preface
This manual provides installation, maintenance, and reference information
for the R400X mass storage expander.
NOTE: If the R400X expander is to be used with systems using BA200-series
enclosures or earlier, such as MicroVAX 3000-series or MicroVAX II systems,
you will need the H4010–AA hardware kit with supplemental installation
procedures.
The R400X storage expander holds up to seven integrated storage elements
(ISEs), or up to six ISEs plus a TLZ04 tape drive.
The R400X expander supports both Digital Storage System Interconnect
(DSSI) and Small Computer System Interface (SCSI) mass storage devices.

Intended Audience
This document is intended only for Digital Customer Services personnel
and qualified self-maintenance customers.

Organization
This guide has three chapters and two appendixes.
Chapter 1 provides an overview of the expansion enclosure, its subcomponents, and bus configurations.
Chapter 2 describes how to install the expander.
Chapter 3 describes how to remove and replace R400X field-replaceable
units (FRUs). Table 3-1 lists the FRUs.
Appendix A provides illustrations of expanded systems that require the
H4010–AA hardware kit.
Appendix B provides instructions for programming internal parameters for
RF-series ISEs.
Appendix C provides a list of related documentation.

Warnings, Cautions, and Notes
Warnings, cautions, and notes appear throughout this guide. They have
the following meanings:
WARNING

Provides information to prevent personal injury.

CAUTION

Provides information to prevent damage to equipment or software.

NOTE

Provides general information about the current topic.

BOLD

This bold type indicates user input.

The following symbols appear on the expander power supply. Please review
their definitions below:
This warning symbol indicates risk of electric shock.

WARNING. To reduce the risk of injury, do not remove
modules, Integrated Storage Elements (ISEs), or the power
supply. No user-serviceable parts are inside. Refer servicing
questions to your Digital Customer Services representative
or to your qualified self-maintenance personnel.
This equipment has not been designed for connection to an IT
power system (a power system without a directly grounded
neutral conductor).
This equipment should be plugged into a properly grounded
receptacle only.
This system contains an automatic voltage select power
supply. Voltage selection is not required prior to installation.

Chapter 1

R400X Expander Description
This chapter describes the R400X expander, which is a member of the
BA400-series of enclosures. The R400X expander is shown in Figure 1–1.
The R400X expander provides space for up to seven integrated storage
elements (ISEs), or up to six ISEs plus a TLZ04 tape drive, for VAX 4000,
DECsystem, and Q-bus MicroVAX systems.
NOTE: If the R400X expander is to be used with systems using BA200-series
enclosures or earlier systems, such as MicroVAX 3000-series or MicroVAX II,
you will need the H4010–AA hardware kit with supplemental installation
procedures.
The R400X expander connects to the system by a Digital Storage System
Interconnect (DSSI) cable or by a Small Computer System Interface (SCSI)
cable, or both. RF-series ISEs are DSSI devices; RZ-series ISEs and the
TLZ04 tape drive are SCSI devices.
NOTE: VAX 4000 systems do not support RZ-series ISEs.

R400X Expander Description

1–1

Figure 1–1: R400X Expander

MLO-004231

1.1 Opening the Front Door
The front of the expander has a divided door that can be locked to prohibit
or restrict access to ISE, tape drive, and expander controls. A three-position
rotary lock allows you to lock both the upper and lower doors or to lock just
the lower door. Opening the upper door allows access to storage device
controls in the upper mass storage area. Opening the entire door allows
you to access all expander and storage device controls.
Figure 1–2 shows the three key positions and the controls accessible in
each position. Windows on the door allow you to see the storage device
indicators.

1–2 R400X Expander Installation and Maintenance

Figure 1–2: Key Positions

Door Handle

Rotary Key Lock
Top Key Position:
Access to Top Row
of ISEs and
Control Panels

Middle Key Position:
No Access to Controls

Bottom Key Position:
Access to Power Switch
and Bottom Row of ISEs
and Control Panels

MLO-004053

Opening and Closing the Divided Door
Open and close the door as follows:
1. Insert the key in the lock on the front door. Turn the key to the top
position to open the upper door only, or to the bottom position to open
the entire door.
With the key in the bottom position, the upper and lower doors will
open together.
2. Swing the door open.
3. To close the door, simply reverse the procedure. When pushing the
doors closed, push gently at the top right of the upper door and the
bottom right of the lower door.

R400X Expander Description

1–3

1.2 Mass Storage
The R400X expander provides room for up to seven ISEs, or up to six ISEs
plus a TLZ04 tape drive. The ISEs may be either DSSI-based RF-series
ISEs or SCSI-based RZ-series ISEs. Each ISE has its own controller, and
special mounting hardware to allow the devices to plug into the BA400series backplane.
NOTE: VAX 4000 systems do not support RZ-series ISEs.
The R400X expander has upper and lower mass storage areas (Figure 1–3).
The upper storage area has room for four ISEs, or three ISEs plus a TLZ04
tape drive; the lower mass storage area has room for three ISEs.
Figure 1–3: R400X Mass Storage Areas

Mass Storage Area
MLO-004232

Each RF-series ISE has its own front panel with controls and indicators
(Figure 1–4). Front panels for RZ-series ISEs have no controls or indicators,
only a SCSI bus node ID plug (Figure 1–5). Figure 1–6 shows the controls
and indicators for the TLZ04 tape drive.

1–4 R400X Expander Installation and Maintenance

NOTE: All R400X expanders have panels for seven ISEs. If the expander
has less than seven ISEs, the ISE cavity is covered by a blank panel with no
controls or indicators. The front panels are required to meet international
regulatory standards and to maintain proper aiflow.
Chapter 3 provides instruction for installing, removing, and replacing
ISEs.
Figure 1–4: RF-Series ISE Front Panel

Run/Ready Button
Write-Protect Button

Bus Node
ID Plug

Fault Indicator
MLO-004044

Table 1–1 describes the functions of each control switch and indicator for
RF-series ISEs.

R400X Expander Description

1–5

Table 1–1: RF-Series ISE: Controls and Indicators
OCP
Description

Control or
Indicator

Bus Node ID

Bus Node ID
plug

Setting

Function

Installed

Identifies the bus node number of
the ISE to the system as well as the
unit number by default. ISEs are
usually provided bus node numbers
0 through 6.
DSSI address undefined. If drive is
present, drive-fault LED lights.
Indicates a faulty drive or an
undefined DSSI address.
Drive functioning correctly and DSSI
address defined (normal operating
condition).
Module-to-host calibrations being performed.
Front panel failure or bus node ID
plug is missing.
ISE is on line (normal operating
condition). System can read from
and write to the ISE. Under normal
operation the green LED flashes as
seek operations are performed.
ISE is off line. System cannot read
from or write to the ISE.
System can read from and write to
the ISE (normal operating condition).
System cannot write to the ISE but
can read from the ISE.

Removed
Fault

Red LED

On
Off

Run/Ready

Write Protect

Switch
LED

Flashing
(5 Hz)
Flashing
(10 Hz)
In
LED on

Out
LED off
Out
LED off
In
LED on

1–6 R400X Expander Installation and Maintenance

Figure 1–5: RZ-Series ISE Front Panel

Bus Node
ID Plug
MLO-005185

RZ-series ISEs have a SCSI bus node ID plug that identifies the bus node
number of the ISE to the system. ISEs are usually provided bus node
numbers 0 through 6.

R400X Expander Description

1–7

Figure 1–6: TLZ04 Tape Drive

50%

Unload
Button

Drive Indicator

Tape Drive

SCSI Bus Node
ID Plug
0

MLO-005786

Table 1–2 describes the TLZ04 drive indicators as they apply to normal
operating conditions. Table 1–3 describes the TLZ04 drive indicators as
they apply to abnormal operating conditions.

1–8 R400X Expander Installation and Maintenance

Table 1–2: TLZ04 Drive Indicators (Normal Conditions)
Indicator

Color(s)

Tape

Meaning
Indicates status of cassette tape as follows:

Solid green

Tape loaded.

Solid yellow

Tape loaded and write protected.

Drive

Indicates status of TLZ04 drive as follows:
Solid green

Drive ready/power on.

Flashing green

Drive active.

Flashing yellow

Power-up self-test in progress.

Table 1–3: TLZ04 Drive Indicators (Abnormal Conditions)
Indicator

Color(s)

Meaning

Tape

Slow flashing
green or yellow

Excessive tape errors. Use the head cleaning cassette.
If failure repeats itself, use another cassette tape.

Tape and Drive

Solid yellow

High humidity. Adjust operating environment.

Tape

Flashing yellow
1-3 times

Power-up self-test failed.

Drive

Solid yellow

Power-up self-test failed.

1.3 Backplane
The backplane for the R400X expander consists of four layers: two signal
layers, a power layer, and a ground layer. The etch for the DSSI and
SCSI busses distributes power and signals to the ISE through high-density
connectors on the backplane. Two power connectors allow the power supply
to plug into the backplane. The backplane distributes +5.1 V and +12.1 V
to all the mass storage connectors and SCSI connection panel.
The backplane provides a single SCSI bus and two separate DSSI busses.
A DSSI jumper assembly, which plugs into the backplane, allows you to
configure the DSSI bus in one of two possible configurations. In one
configuration the DSSI bus extends as a single bus to all seven ISE cavities.
A second configuration has two separate busses: the first bus connects the
four ISE cavities in the upper mass storage area; the second bus connects

R400X Expander Description

1–9

the three ISE cavities in the lower mass storage area. When the expander is
shared between two systems, you can designate storage devices to a specific
system by using the two separate DSSI busses.
Configuring the DSSI bus is achieved by arranging the DSSI connector
assemblies and the DSSI jumper assembly as described in the next section.

1.4 DSSI Connection and Bus Configuration Area
Below the mass storage area is the DSSI connection and configuration area.
This area provides positions for two DSSI connector assemblies as well as
a DSSI jumper assembly.
External connections to and from the R400X DSSI busses are made at the
DSSI connector assemblies. Each of the connector assemblies consists of
two M7574 modules with two DSSI connectors at one end and gold contact
fingers on the other end. The DSSI connectors protrude through a cutout
in a metal bulkhead. Two quarter-turn fasteners on the bulkhead hold
the assembly in position. These two connector assemblies can be arranged
with a third assembly, the DSSI jumper assembly, to configure the DSSI
backplane into the two separate busses.
The DSSI jumper assembly plugs into one of two positions in the DSSI
connection and configuration area. The jumper assembly consists of an
M7575–YA and M7575–YB module. The modules are attached to a metal
bulkhead. Like the connector assemblies, two quarter-turn fasteners hold
the assembly in position. A handle on the bulkhead helps to remove and
insert the assembly.
The position of the DSSI jumper assembly determines the configuration
of the DSSI bus. In one position, the DSSI bus extends as a single bus
to all seven mass storage cavities. With the DSSI jumper assembly in a
second position, the DSSI bus is split into two separate busses with one bus
connecting the four devices in the upper mass storage area, and a second
bus connecting three devices in the lower mass storage area. Figures 1–7
and 1–8 show the position of the DSSI jumper relative to the paths of the
DSSI bus.

1–10 R400X Expander Installation and Maintenance

Figure 1–7: R400X Single DSSI Bus Configuration

DSSI Bus
Jumper Assembly
Stored Connector Assembly
MLO-004233

R400X Expander Description

1–11

Figure 1–8: R400X Double DSSI Bus Configuration

Bus U

Connector Assembly

Bus L

Stored Jumper Assembly
MLO-004234

1.5 SCSI Connection Panel
To the right of the DSSI connection and configuration area is the SCSI
connection panel (Figure 1–9). Two SCSI connectors on this panel allow you
to extend the system’s SCSI bus to the expander, and from the expander to
an external SCSI device, such as a tabletop RRD40 or TLZ04 subsystem.
The SCSI connection panel is connected to the SCSI connector module
(M7493–PA) that provides terminator power for the SCSI and DSSI busses,
as well as relay circuitry that sequences the power up of the expander’s RFseries ISEs. The top row of RF-series ISEs powers up a few seconds before
the bottom row.
The SCSI bus is a single continuous bus (Figure 1–9). The mixing of
supported SCSI devices and DSSI devices in adjacent storage cavities is
allowed.

1–12 R400X Expander Installation and Maintenance

Figure 1–9: R400X SCSI Bus Configuration

SCSI Bus
MLO-005787

1.6 Power Supply
The R400X expander uses the H7874 power supply.

1.6.1 General Description
The H7874 power supply has two mechanically floating connectors that
plug directly into the backplane. All power supply control signals and dc
power connections to the power supply are made through these connections.
The power supply contains auto voltage circuitry that senses input voltage
ranges and will automatically configure itself to operate over 100–120 Vac
or 220–240 Vac. The power supply is a complete power unit that contains
the IEC input connector and the EMI filter.
The power supply is capable of delivering approximately 600 watts of dc
power split among +5.1, +12.1, -12.1, and +3.3 volts (the -12.1 and +3.3 volt
outputs are not used in the R400X expander).
To prevent damage due to overheating, the power supply monitors the
internal temperature of the enclosure and the speed of the fans. If the
power supply detects overheating or a fan failure, the power supply will
shut down the system.

R400X Expander Description

1–13

When the system shuts down due to overheating, the Over Temperature
Condition indicator on the power supply remains lit. To recover from a
shutdown, set the power switch to off (0) and wait five minutes before
turning on the system.
To prevent an over temperature condition, use the following precautions:
•

Make sure your system is away from heat sources.

•

Check that the system’s air vents are not blocked.

•

Check that the room temperature is within acceptable limits as specified
in the system Site Preparation manual contained in the customer
hardware information binder.

1.6.2 Shutdown Sequence
The power supply enters and completes a shutdown sequence whenever the
BPOK H signal is negated. The following conditions negate BPOK H:
•

Temperature sensor triggered

•

An overcurrent condition on the supply dc voltage outputs

•

An overvoltage condition on the supply dc voltage outputs

•

Input voltage greater than 264 Vrms or less than 176 Vrms (240 Vac)

•

Input voltage greater than 132 Vrms or less than 88 Vrms (120 Vac)

•

Fan failure

•

Loss of ac input

Figure 1–10 shows the controls and indicators on the power supply.
Table 1–4 describes the functions of the power supply controls and
indicators.

1–14 R400X Expander Installation and Maintenance

Figure 1–10: Power Supply
Power Switch
AC Present
Indicator
DC OK
Fan Failure
Over
Temperature
Indicator
Power
Control Bus
Connectors

MLO-004070

Table 1–4: R400X Power Supply Controls and Indicators
Control/Indicator

Function

AC Present Indicator (orange)

Lights when the power switch is set to on (1) and the ac
voltage is present at the input of the power supply.
The power switch is used to turn system power on and
off. The off position is indicated by a 0; the on position is
indicated by a 1.

Power switch

The power switch also functions as the expander circuit
breaker. In the event of a power surge, the breaker will
trip, causing the power switch to return to the off position
(0). Turning the system on resets the circuit breaker. If
the circuit breaker trips, wait one minute before turning
the expander back on.

R400X Expander Description

1–15

Table 1–4 (Cont.): R400X Power Supply Controls and Indicators
Control/Indicator

Function

DC OK indicator (green)

When the DC OK indicator is lit, the voltages are within
the correct operating range. An unlit DC OK indicator
shows a problem with the power supply.
The Fan Failure indicator lights if either of the two cooling
fans stop working. The power supply will automatically
shut down the system as a precautionary measure when a
fan failure is detected.
The Over Temperature indicator lights if the expander has
shut down due to an over temperature condition.
Three power bus connectors allow you to configure a
power bus for systems expanded with the R400X expander.
The power bus allows you to turn power on and off
for the system and expander through one power supply
designated as the main power supply: this way, one
power switch can control power for an expanded system.
Figure 1–11 illustrates a possible power bus configuration.

Fan Failure indicator (amber)

Over Temperature Condition indicator (amber)
Power bus connectors

When using a power bus, the R400X expander power
switch should always remain in the on position (1). The
system’s power switch will control power up for the entire
epanded system.
The main out connector sends the power control bus signal
to the expander. One end of a power bus cable is connected
here, the other end is connected to the SI (secondary in)
connector of the expander power supply.
The secondary in connector receives the power bus control
signal from the main power supply. In a power bus with
more than one expander, the power bus signal is passed
along using the secondary in and out connectors as shown
in Figure 1–11.
The secondary out connector sends the signal down the
power bus for configurations of more than one expander.
Figure 1–11 shows a power bus for an expanded system.

1–16 R400X Expander Installation and Maintenance

Figure 1–11: Sample Power Bus Configuration
System

Expander 1

Expander 2

MLO-004041

NOTE: Dual-host systems should not be configured with a power bus.
Inadvertently shutting off a host system defeats the added reliability of a
dual-host system.

1.7 Fan Tray
The fan tray at the bottom of the enclosure houses two 15.0 cm (6 in) dc
fans. The fans draw air through the top of the enclosure and exhaust the
air through the bottom of the enclosure.
A temperature sensor located in the power supply adjusts the fan speed
by varying the fan voltage based on the air temperature in the expander.
Power for the fans is provided through a connector that plugs into the
backplane at the rear of the fan tray. If either fan fails, the system shuts
down and the fan failure indicator on the power supply remains lit.

R400X Expander Description

1–17

1.8 Status Panel
A status panel in the upper right corner of the enclosure provides two
indicator lights (Figure 1–12). A red Over Temperature Warning indicator
flashes to indicate that the expander’s internal temperature is approaching
a level that may cause components to overheat. In addition to the flashing
Over Temperature Warning indicator, an audible alarm also provides
warning of a possible over temperature condition. If the components
continue to heat, the system will automatically shut down.
A green DC OK indicator shows that voltages are within the correct
operating range.
Figure 1–12: Status Panel

Expander

Over Temperature
Warning Indicator
DC OK

MLO-004126

1–18 R400X Expander Installation and Maintenance

Chapter 2

Installation
This chapter explains how to install the R400X expander on VAX 4000,
DECsystem, MicroVAX 3000-series, and MicroVAX II systems.
NOTE: If the R400X expander is to be used with systems using BA200-series
enclosures or earlier systems, such as MicroVAX 3000-series or MicroVAX II,
you will need the H4010–AA hardware kit with supplemental installation
procedures.
To install the expander, you must complete the following steps. Some of the
steps vary, depending on whether the system is factory configured for the
expander, or if you are installing the expander for a previously installed
system.
1. Verify site preparation.
2. Unpack the shipment.
3. Position the expander.
4. Configure the DSSI bus.
5. Install the storage devices, if not factory configured.
6. Install the KFQSA adapter and its cabinet kit, if those tasks are
required.
7. Connect the DSSI cable.
8. Connect the SCSI cable.
9. Connect power bus cables.
10. Connect the ground cables.
11. Connect the power cables.
12. Turn on the system.
13. Configure the KFQSA storage adapter (for KFQSA-based DSSI).
14. Program unit numbers for ISEs if necessary.

Installation

2–1

15. Close the door.
16. Satisfy any postinstallation requirements.

2.1 Verifying Site Preparation
Before unpacking the shipment:
•

For an existing system, make sure the customer has backed up the
software and shut down the operating system.

•

All site environmental requirements for the expander, such as cooling,
airflow, temperature, humidity, and so on, should conform to those of
the system being expanded. These should be verified as part of your
site preparation for the expander. You can find the site preparation
guide in the system Customer Hardware Information binder.

•

Use a dedicated ac circuit and receptacle for the expander. In the United
States and Canada, the expander will be shipped with a power cable
requiring a dedicated 120-volt, 15-amp receptacle. In other countries,
the expander will be shipped with a country-specific power cable. This
requires a dedicated power circuit and receptacle of comparable current
capability, based on the country-specific power distribution regulations
and power outlet designs.

•

If the expander is being installed as an add-on, run the MicroVAX
Diagnostic Monitor on the system before installing the expander.
The MicroVAX Diagnostic Monitor is described in the system’s
Troubleshooting and Diagnostics manual.
You can find the
Troubleshooting and Diagnostics manual in the system Customer
Hardware Information binder.

•

Make sure the system power is turned off.

CAUTION: Turning off the system without following the shutdown
procedure described in the operating system software manuals may result
in loss of data.

2.1.1 Tools Needed
The following tools are needed to install the expander:
•

Flat blade screwdriver

•

Phillips (cross point) screwdriver

•

Adjustable wrench

2–2 R400X Expander Installation and Maintenance

2.2 Unpacking the Shipment
Keep all shipping and delivery receipts and save all packing materials until
the expander is up and running properly and you are sure you will not
reship it.
Save all packing materials until you are sure you will not move the
expander to another location.
1. Before unpacking the shipping carton, check for external shipping
damage.
Report any damage to the customer’s sales representative and the
customer’s delivery agent.
2. Unpack the shipping carton according to the instructions on that carton.
Figure 2–1 shows the shipping carton contents for the R400X expander.

Installation

2–3

Figure 2–1: R400X Expander Shipping Carton Contents

DSSI Cable
BC21M-09
Power
Cable
Ground Wire
Cable
12-13756-A8

SCSI Cable
BC06P-06

Anti Static

Power Control
Bus Cable
17-02638-01

Keys to Front Door
SCSI Bus Node ID
Plugs (12-28766-28)
DSSI Bus Node ID
Plugs (12-28766-19)

Expander

MLO-004051

3. Check the contents against the shipping list to ensure you received
everything that was ordered.
If any item is missing or damaged, contact the customer’s sales
representative and the customer’s delivery agent.

2–4 R400X Expander Installation and Maintenance

2.3 Positioning the Expander
After unpacking the expander, you can move it into position in two ways
as shown in Figure 2–2:
•

Roll it sideways.

•

Gently slide or walk it backward or forward by gripping the handholds
on the sides of the enclosure.

Position the expander next to the system (on either side).
WARNING: The R400X expander weighs between 50 kg (110 lb) and 68 kg
(150 lb), depending on the number of ISEs installed. Two or more people
are needed to maneuver the system.
During installation, leave a few inches of space behind the R400X enclosure
and the system enclosure for routing cables underneath. Once installation
is complete, you can place the base of the enclosures against a wall.
Figure 2–2: Moving the Expander into Place
Hand Holds

Expander

System

Slides Front
to Back
Rolls Left
to Right
MLO-004052

Installation

2–5

2.4 Configuring the DSSI Bus
As described in Sections 1.3 and 1.4, the DSSI bus can be configured in
two ways, as one continuous bus or as two separate DSSI busses. The
position of the DSSI jumper assembly and DSSI connection assemblies in
the lower portion of the enclosure determines the configuration of the DSSI
bus. Two quarter-turn fasteners on the bulkhead of the assemblies allow
you to remove and reconfigure the DSSI bus. The assembly modules slide
into guide rails and plug into connectors on the backplane. Figure 2–3
shows how to remove or install a DSSI jumper or connector assembly.
Figure 2–3: Removing and Installing a DSSI Jumper or Connector
Assembly

Connector Assembly

Handle

Quarter-Turn
Fasteners

MLO-004235

2.5 Installing Storage Devices
Installing an expander on to a previously installed system requires that you
install mass storage devices according to the customer’s specifications. The
expander has the capacity for a maximum of up to six ISEs for a dual-host
configuration and up to seven ISEs for a single-host system. A TLZ04 tape
drive can be installed in the upper rightmost storage cavity in place of an
RF-series or RZ-series ISE.
NOTE: VAX 4000 systems do not support RZ-series ISEs.

2–6 R400X Expander Installation and Maintenance

You should first fill the available mass storage potential in the expander
before installing ISEs in a system enclosure. If you need to move ISEs from
the system enclosure to the expander, refer to Chapter 3 for instructions
on removing ISEs. Instructions for installing RF- and RZ-series ISEs are
provided in Section 2.5.1. Instructions for installing the TLZ04 tape drive
are provided in Section 2.5.2.

2.5.1 Installing RF- and RZ-Series ISEs
NOTE: Expanded systems configured at the factory already have ISEs
properly installed. If you are installing a factory-configured system, proceed
to Section 2.6.
CAUTION: Static electricity can damage integrated circuits. Use the wrist
strap and antistatic mat found in the Antistatic Kit (PN 29–26246–00) when
you work with the internal parts of a computer system.
Handle ISEs with care. Dropping or bumping the ISE can damage the disk
surface. Carry or hold an ISE from underneath the lower metal bracket to
avoid damaging the drive module or stressing the screws on the upper metal
bracket.

Installation

2–7

Install an ISE as follows:
1. Unpack the ISE.
2. Remove the blank ISE front panel from the expander. The front panels
are each secured with one captive Phillips screw.
3. With the ISE controller module facing the right, slide the ISE along
the guide rails into a mass storage cavity (Figure 2–4A). For single
bus configurations, install ISEs in the upper mass storage area first;
then install ISEs in the lower mass storage area. Always install ISEs
working from right to left.
NOTE: The first or rightmost mass storage cavity in the upper mass
storage area is wider than the rest to accommodate a larger device. A
small filler panel is used to fill the gap space when an RF- or RZ-series
ISE is installed in this first cavity.
4. Using the upper and lower finger cutouts on the ISE bracketry, firmly
push the ISE brackets until the interface card at the rear of the ISE
plugs into its backplane connector (Figure 2–4A). The guide tabs on
the upper and lower bracket should line up with the cutouts in the
expander chasis. Tighten the two captive screws.
CAUTION: A small gap between the ISE mounting bracket tabs and the
R400X frame is normal. Tighten the captive screws only until they are
securely fastened. Do not try to force the tabs to fit flush against the
frame.
5. Plug the ISE’s remote front panel cable into the module inside the ISE
front panel (Figure 2–4B). Use the Velcro on the cable and the inside
of the ISE front panel to secure the remote front panel cable.
NOTE: The ISE front panel for RZ-series ISEs, unlike the RF-series
front panel, has no buttons or indicators.
6. Attach the ISE front panel to the enclosure by first fitting the panel’s
lower tabs and then fitting the panel into position. Secure the panel
with its single screw (Figure 2–4C).

2–8 R400X Expander Installation and Maintenance

Figure 2–4: Installing an RF- or RZ-Series ISE

Captive Screws

Guide
Tabs

Finger Cutouts
Remote Front
Panel Cable
Velcro

Phillips Screw

MLO-004236

Installation

2–9

2.5.1.1 Inserting Bus Node ID Plugs
Spare bus node ID plugs are supplied with your expander. The DSSI plugs
for RF-series ISEs are dark gray (PN 12–28766–19). The SCSI plugs for
RZ-series ISEs are lighter gray (PN 12–28766–28).
Bus node ID plugs have prongs on the back that identify the bus node
number (and by default, the unit number) of the ISEs to the system. Bus
node ID plugs are shipped with the system and expander.
To insert a bus node ID plug, align the two center prongs with the two
center slots on the ISE front panel as shown in Figure 2–5. To remove a
bus node ID plug, grasp it firmly and pull it straight out.
Use the rules below for numbering bus node IDs for ISEs:
•

For each DSSI or SCSI bus, do not duplicate bus node numbers for
storage elements. You can have only one storage element on bus 0
identified as bus node 0, one storage element as bus node 1, and so on;
you can have only one storage element on bus 1 identified as bus node
0, one storage element as bus node 1, and so on.

•

By convention, the ISEs are numbered in increasing order from right
to left starting with 0, and working from upper mass storage area to
lower.

Bus nodes 0–6 are typically used for storage devices, while node 7 is
reserved for the adapter, and is the default bus node ID for the KZQSA
and KFQSA adapters.
NOTE: DSSI bus node ID plugs are also used to supply node numbers for
the two embedded DSSI host adapters on VAX 4000 Model 300 systems.

2–10 R400X Expander Installation and Maintenance

Figure 2–5: Inserting Bus Node ID Plugs

Bus Node
ID Plug

MLO-004045

NOTE: If you change the bus node ID plugs while the system is operating,
you must turn off the system and then turn it back on for the new plug
positions to take effect.
2.5.1.2 Labeling RF-Series ISEs for Systems with Multiple DSSI Busses
VAX 4000 Model 300 systems have two separate DSSI adapters built into
the CPU. Other systems may have more than one DSSI bus using the
KFQSA storage adapter. Using R400X expanders you can fill up to four
DSSI busses for a total of 28 RF-series ISEs. Each bus can have up to seven
ISEs (bus nodes 0–6). When there are devices on more than one bus and the
system’s allocation class is not zero, you need to program new unit numbers
for ISEs, as the unit numbers for ISEs throughout the system must be
unique. Instructions provided in Appendix B describe programming new
unit numbers and overriding default values.
With devices on two or more busses and a nonzero system allocation class,
the ISE unit numbers will not match the bus node numbers on the bus
node ID plugs. Unit number labels are provided with each ISE to identify

Installation

2–11

unit numbers for the user. The labels stick onto the recessed label area on
the ISE front panel as shown in Figure 2–6.
Figure 2–6: Attaching a Unit Label to the ISE Front Panel

Attach Unit
Number Label
0

MLO-004237

2.5.2 Installing a TLZ04 Tape Drive
NOTE: Expanded systems configured at the factory already have storage
devices properly installed. If you are installing a factory-configured system,
proceed to Section 2.6.
CAUTION: Static electricity can damage integrated circuits. Use the wrist
strap and antistatic mat found in the Antistatic Kit (PN 29–26246–00) when
you work with the internal parts of a computer system.
Handle the TLZ04 tape drive with care. Dropping or bumping the drive can
damage the product. Carry or hold the drive from underneath the lower
metal bracket to avoid stressing the screws on the upper metal bracket.
Install the TLZ04 Tape Drive as follows:
1. Unpack the tape drive.

2–12 R400X Expander Installation and Maintenance

2. Remove the blank front panel and filler panel from the upper rightmost
storage cavity of the expander. The front panel is secured with one
captive Phillips screw.
3. With the drive positioned so that the Unload button and indicators are
up, slide the drive along the guide rails into the upper rightmost mass
storage cavity (Figure 2–7A).
4. Using the upper and lower finger cutouts on the brackets, firmly push
the drive brackets until the interface card at the rear of the drive plugs
into its backplane connector (Figure 2–7A). The guide tabs on the upper
and lower bracket should line up with the cut outs in the expander
chasis. Tighten the two captive screws.
CAUTION: It is normal for there to be a small gap between the drive
mounting bracket tabs and the R400X frame. Tighten the captive screws
only until they are securely fastened. Do not try to force the tabs to fit
flush against the frame.
5. Plug the tape drive’s ID cable into the connector inside the drive front
panel (Figure 2–7B).
6. Attach the drive front panel to the enclosure by first fitting the panel’s
lower tabs and then fitting the panel into position. Secure the panel
with its single screw (Figure 2–7C).

Installation

2–13

Figure 2–7: Installing the TLZ04 Tape Drive

25.5%

Captive Screw

Finger Cutouts

Guide Tabs

B
ID Cable

Phillips Screw

30%
MLO-005788

2–14 R400X Expander Installation and Maintenance

2.5.2.1 Inserting the TLZ04 Bus Node ID Plug
The TLZ04 tape drive uses a SCSI bus node ID plug to identify the drive’s
node number to the system. Spare bus node ID plugs are supplied with
your system and expander. SCSI plugs are light gray (PN 12–28766–28).
To insert a bus node ID plug, align the two center prongs with the two
center slots on the drive front panel as shown in Figure 2–8. To remove a
bus node ID plug, grasp it firmly and pull it straight out.
Figure 2–8: Inserting Bus Node ID Plug for TLZ04 Tape Drive

40%

Bus Node
ID Plug

MLO-005789

Use the rules below for selecting an appropriate SCSI bus node ID for the
TLZ04:
•

For each SCSI bus, do not duplicate bus node numbers. If you are
installing multiple TLZ04 or RZ-series ISEs, the SCSI bus node ID for
each SCSI device must be unique.

Installation

2–15

•

By convention, the devices are numbered in increasing order from right
to left starting with 0, and working from upper mass storage area to
lower.

Bus nodes 0–6 are typically used for storage devices, while node 7 is
reserved for the SCSI adapter and is the default bus node ID for the KZQSA
adapter.
NOTE: If you change the bus node ID plugs while the system is operating,
you must turn off the system and then turn it back on for the new plug
positions to take effect.

2.6 Installing Additional Components
Some MicroVAX systems do not have a DSSI bus and require additional
components, such as the KFQSA storage adapter, before you can expand a
DSSI bus. Other installations may require the KFQSA storage adapter to
provide additional DSSI busses. Up to two KFQSA storage adapters can
be added to any system to provide additional DSSI busses.
For an SDI-based MicroVAX 3900 and DECsystem 5400 Cabinet
system (which uses RA-series fixed disks), install the following:
•

KFQSA adapter in the MicroVAX system as described in the KFQ
Storage Adapter Installation and User Manual

For an SDI-based MicroVAX 3500/3600 system (which uses RA-series
fixed disks), install the following:
•

KFQSA adapter in the MicroVAX system as described in the KFQ
Storage Adapter Installation and User Manual

For a MicroVAX II system (which uses RD-series fixed disks), install the
following:
•

KFQSA adapter in the MicroVAX system as described in the KFQ
Storage Adapter Installation and User Manual

•

Cabinet kit in the MicroVAX system as described in the document that
is packaged with the kit

NOTE: MicroVAX II systems cannot boot from RF-series ISEs. The system
disk must remain in the MicroVAX II enclosure.

2–16 R400X Expander Installation and Maintenance

2.6.1 Installing the KFQSA Adapter
If a KFQSA is not factory configured, before installing the KFQSA adapter,
set the switchpack on the KFQSA module as described in the KFQSA
Installation and User Manual.
After completing the applicable procedures above, continue with the
following section.

2.7 Connecting DSSI Cables
CAUTION: Make sure the power switches on the system and the expander
are set to off (0).
DSSI cables are used to extend the DSSI bus to RF-series ISEs in the R400X
expander. If the expander contains no DSSI devices, proceed to Section 2.8.
DSSI cable connections are determined by the system and configuration
you are installing.
•

Figures 2–12 through 2–18 show DSSI cable connections for supported
systems and configurations using the R400X expander and VAX 4000
Model 300 (BA440 enclosure).

•

Figure 2–19 shows the DSSI cable connections for the R400X expander
and VAX 4000 Model 200 (BA430 enclosure) and DECsystem 5500.
Additional R400X expanders could be supported by adding KFQSA
storage adapters to the system.

•

Figure 2–20 shows the DSSI cable connections for the R400X expander
and dual-host VAX 4000 Model 200 (BA430).

•

Appendix A provides cabling illustrations for systems using BA200series enclosures or earlier enclosures. These system require the
H4010–AA hardware kit.

Before connecting DSSI cables, you may need to remove or transfer a DSSI
terminator. Refer to the appropriate configuration figure to determine the
correct placement of terminators. To transfer or attach a DSSI terminator,
refer to the instructions in the following sections.
NOTE: Before connecting DSSI cables or terminators, you may need to
remove covers from the DSSI connectors. Small plastic covers protect the
connector from dust and electrostatic discharge.

Installation

2–17

2.7.1 Transferring or Attaching the DSSI Terminator
To remove the DSSI terminator, squeeze the spring clips at the bottom and
top of the terminator as you pull it straight out of the connector (Figure 2–9).
CAUTION: You must pull the terminator straight out of the connector to
prevent damage to the pins.
Figure 2–9: Removing a DSSI Terminator

MLO-004238

To attach a DSSI terminator, check that the terminator is oriented properly
(the terminator is designed to fit on the DSSI connector in one way only).
Then, push the terminator onto the connector. The spring clips should lock
the terminator in place (Figure 2–10).

2–18 R400X Expander Installation and Maintenance

Figure 2–10: Attaching a DSSI Terminator

MLO-004239

2.7.2 Connecting a DSSI Cable
Use the following procedure to connect a DSSI cable. Refer to the
appropriate figure (Figures 2–12 through 2–19, or A–1 through A–6) to
determine where to make the cable connections.
1. Find the 2.74 m (9 ft) DSSI cable labeled BC21M–09 that was shipped
with the expander.
2. Feed either end of the DSSI cable under the system enclosure from the
back or side and then to the DSSI connector as shown in the appropriate
configuration figure.
3. Plug the cable into the DSSI connector by fitting the cable connector
over the two pins on the DSSI connector as shown in Figure 2–11.
First tighten the screws by hand, then use a screwdriver to secure the
connection firmly.
4. Feed the opposite end of the DSSI cable under the R400X enclosure
from the back or side.
5. Plug the cable into the appropriate DSSI port on the expander, as shown
in Figures 2–12 through 2–19 or A–1 through A–6, by fitting the cable
connector over the two pins on the DSSI port.
First tighten the screws by hand, then use a screwdriver to secure the
connection firmly.

Installation

2–19

Figure 2–11: Connecting a DSSI Cable

MLO-004240

NOTE: If you need to remove a DSSI cable, loosen the screws at the
connector and then pull the connector straight off by pulling the two screw
heads simultaneously.

2–20 R400X Expander Installation and Maintenance

Figure 2–12: Expanded Dual-Host VAX 4000 Model 300 System with
One R400X Expander and No ISEs in the Host Enclosures
(Bus 0)
Host A

Expander

3 2 1 0
6 5 4

Host B

DSSI Terminator Locations
MLO-004241

NOTE: For dual-host systems, the first host’s (Host A) DSSI busses on the
console module (Bus 0 and Bus 1) should both be configured with a number
7 bus node ID plug. Both busses on the second host (Host B) should be
configured with a number 6 bus node ID plug.

Installation

2–21

Figure 2–13: Expanded Dual-Host VAX 4000 Model 300 System with One
R400X Expander and ISEs in the Host Enclosures (Bus 0)
Host A

Expander

2 1 0

3 2 1 0
6 5 4

Host B

5 4 3

DSSI Terminator Locations
MLO-004242

2–22 R400X Expander Installation and Maintenance

Figure 2–14: Expanded Dual-Host VAX 4000 Model 300 System with Two
R400X Expanders
Host A

Expander 1

2 1 0

3 2 1 0
6 5 4

Expander 2

3 2 1 0

Host B

5 4 3

6 5 4

DSSI Terminator Locations
MLO-004243

Installation

2–23

Figure 2–15: Expanded Single-Host VAX 4000 Model 300 System with
One R400X Expander
System

2 1 0

Expander

3 2 1 0
6 5 4

DSSI Terminator Locations
MLO-004244

NOTE: For single-host systems, both DSSI busses on the console module
(Bus 0 and Bus 1) should be configured with a number 7 bus node ID plug.

2–24 R400X Expander Installation and Maintenance

Figure 2–16: Expanded Single-Host VAX 4000 Model 300 System with
Two R400X Expanders
System

Expander 1

2 1 0

3 2 1 0
6 5 4

Expander 2

3 2 1 0
6 5 4

DSSI Terminator Locations
MLO-004245

NOTE: For single-host systems, both DSSI busses on the console module
(Bus 0 and Bus 1) should be configured with a number 7 bus node ID plug.

Installation

2–25

Figure 2–17: Expanded Single-Host VAX 4000 Model 300 System with
Three R400X Expanders

Expander 2

System

3 2 1 0

Expander 1

2 1 0

3 2 1 0
6 5 4

6 5 4

Expander 3

3 2 1 0
6 5 4

DSSI Terminator Locations
MLO-004246

NOTE: For single-host systems, both DSSI busses on the console module
(Bus 0 and Bus 1) should be configured with a number 7 bus node ID plug.
The KFQSA storage adapter should also be programmed to have a bus node
of 7.

2–26 R400X Expander Installation and Maintenance

Figure 2–18: Expanded Single-Host VAX 4000 Model 300 System with
Four R400X Expanders
Expander 2

System

3 2 1 0

Expander 1

2 1 0

3 2 1 0
6 5 4

6 5 4

Expander 4

Expander 3

3 2 1 0

6 5 4

DSSI Terminator Locations
MLO-004247

NOTE: For single-host systems, both DSSI busses on the console module
(Bus 0 and Bus 1) should be configured with a number 7 bus node ID plug.
The KFQSA storage adapters should also be programmed to have a bus node
of 7.

Installation

2–27

Figure 2–19: Expanded VAX 4000 Model 200 (BA430) or DECsystem
5500 System

System

Expander

3 2 1 0
6 5 4

DSSI Terminator Locations
MLO-005798

2–28 R400X Expander Installation and Maintenance

Figure 2–20: Expanded Dual-Host VAX 4000 Model 200 (BA430)
Host B

Host A

5 4 3

2 1 0

Expander

3 2 1 0
5 4

MLO-005790

2.8 Connecting SCSI Cables
CAUTION: Make sure the power switches on the system and the expander
are set to off (0).
SCSI cables are used to extend the SCSI bus to SCSI devices (RZ-series
ISEs or TLZ04 tape drive) in the R400X expander. If the expander contains
no SCSI devices, proceed to Section 2.9.
NOTE: VAX 4000 systems do not support RZ-series ISEs.

Installation

2–29

Use the following instructions to connect the SCSI cable:
1. Find the 1.8-meter (6-foot) SCSI cable labeled BC06P–06 that was
shipped with the expander.
2. Remove the SCSI connector covers from the two SCSI connectors on the
expander (Figure 2–21).
Figure 2–21: Removing the SCSI Connector Covers

SCSI Connector
Dust Cover

MLO-005791

3. Remove the SCSI terminator from the lower SCSI connector on the
system (KZQSA adapter or SCSI panel) and attach it to the upper SCSI
connector on the expander (Figure 2–22). SCSI terminators use bail
latches to secure the connection.
NOTE: Do not remove the SCSI terminator from the upper SCSI
connector on the system.
4. Feed either end of the SCSI cable under the expander from the back
or side. Then feed the cable into the lower SCSI connector. Secure the
cable connection by pressing the bail latches into place on either side
of the connector (Figure 2–22).

2–30 R400X Expander Installation and Maintenance

Figure 2–22: Connecting the SCSI Terminator and Cable

SCSI Terminator

Bail Latch
SCSI Cable

Feed Cable Under Expander
and Through Opening
MLO-005792

5. Feed the other end of the SCSI cable under the system from the back
or side. Feed the cable into the appropriate SCSI connector. Secure the
cable connection by pressing the bail latches into place on either side
of the connector.
Figures 2–23 and 2–24 show possible SCSI cable configurations.

Installation

2–31

Figure 2–23: Expanded DECsystem 5500
System

Expander

3 2 1 0
6 5 4

SCSI Terminator Locations
MLO-005793

2–32 R400X Expander Installation and Maintenance

Figure 2–24: Expanded VAX 4000 SCSI Cable Connection

TLZ04
Tape Drive

System

Expander

0
00

SCSI Terminator Locations
MLO_005794

2.9 Connecting Power Bus Cables
The power bus cable (order no. BC09F–10) allows you to configure a power
bus for expanded systems. The power bus allows you to turn the power on
and off for the entire expanded system at one main power supply on the
system.
NOTE: Expanders configured in a dual-host system should not be configured
with a power bus. Inadvertently shutting down the expander when shutting
down a host system nullifies the greater availability provided by a dual-host
configuration.
NOTE: Expanders used with systems using BA200-series enclosures or
earlier, such as VAX 4000 Model 200 (BA215), MicroVAX 3000-series or
MicroVAX II systems, require a special power bus and ground cables

Installation

2–33

provided in the H4010–AA hardware kit. Use the cables and instructions
provided in the H4010–AA kit.
To set up a power bus, complete the following instructions. Figure 2–25
shows a sample power bus.
1. Find the power bus cable (order no.
shipped with the expander.

BC09F–10, PN 17–02638–01)

2. To attach the first power bus cable, feed the ends of the cable under the
system and expander from the back or side. Plug one end of the cable
into the system power supply receptacle labeled MO (main out). This
power supply will supply the power bus signal to the expander(s). Plug
the other end of the cable into the expander power supply receptacle
labeled SI (secondary in).
3. To extend the power bus to a second expander, plug one end of a power
bus cable into the power supply receptacle labeled SO (secondary out)
on the first expander. Plug the other end of the power bus cable into
power supply receptacle SI in the second expander. The power bus can
be extended in this way to several expanders.
If the power switch on the expander(s) is set to on, the entire expanded
system will power up when you set the power switch on the system power
supply to on (1).

2–34 R400X Expander Installation and Maintenance

Figure 2–25: Sample BA400-Series Power Bus Configuration
Expander 2

Expander 1

System

Expander 4

Expander 3

Power Control
Bus Connector
Power Control
Bus Cable

Enlarged View of Power Supplies

MLO-004124

Installation

2–35

2.10 Connecting Ground Cables
The ground cable (PN 12–13756–A8) provides a common ground for systems
with two or more enclosures. Ground cables are daisy-chained for systems
with multiple enclosures. Connect a ground cable as follows:
NOTE: Expanders used with systems using BA200-series enclosures or
earlier, such as MicroVAX 3000-series or MicroVAX II systems, require a
special power bus and ground cables provided in the H4010–AA hardware
kit. Use the cables and instructions provided in the H4010–AA kit.
1. Find the ground cable, a gray wire with ground lugs on each end (PN
12–13756–A8).
2. Remove the nut on the ground terminal of the system and expander
power supplies.
3. Slide the lug over the terminal and replace the nut.
Figure 2–26 shows how to connect a ground cable.
NOTE: No more than two ground cables should be attached per ground
terminal.

2–36 R400X Expander Installation and Maintenance

Figure 2–26: Connecting a Ground Cable

Feed Cable Under System
and Through Opening
MLO-004028

2.11 Connecting Power Cables
Use the following procedure to connect power cables:
1. Make sure that the power (1/0) switches on the system and the expander
are set to off (0) and that all devices connected to the system are turned
off.
2. Find the appropriate country-specific power cables for the system and
the expander.
3. Make sure the plug end of each power cable matches its receptacle.
Several types of power cables are shown in Figure 2–27.

Installation

2–37

Figure 2–27: Power Cables

100 - 125 V

200 - 250 V

MLO-001861

4. Feed the socket end of the R400X power cable under the expander
enclosure from the back or side and connect the cable as shown in
Figure 2–28.
NOTE: The cover plate on the BA400-series power supply must be in the
down position before you can connect the power cable.
For BA400-series enclosure based, feed the socket end of the system
power cable under the system enclosure from the back or side and
connect the cable as shown in Figure 2–29.

2–38 R400X Expander Installation and Maintenance

Figure 2–28: Connecting the Power Cable to the R400X Expander

Cover Plate

Feed Cable Under Expander
and Through Opening
MLO-004123

Installation

2–39

Figure 2–29: Connecting the Power Cable to the System

Cover Plate

Feed Cable Under System
and Through Opening
MLO-004029

5. Insert the plug end of each power cable into its receptacle.

2.12 Turning On the System
You are now ready to turn on the expanded system and to select a language
if the system is new.
1. Make sure the system and console baud rates are the same.
2. Turn on the console terminal and wait until it performs its self-tests
successfully.
3. Set the power switches on the expander(s) to on (1).
The orange AC indicators on the expanders should light.
NOTE: For expanded BA400-based systems linked by a power bus cable,
the power switch on the R400X expander(s) should always remain in the
on position (1). Setting the power switch to 1 on the system will cause
the expanders to power up as well.

2–40 R400X Expander Installation and Maintenance

4. Set the power switch on the system to on (1).
The orange AC indicators on the system should light, the expanders
and system should power up. If the system is being powered up for the
first time, within a few moments of turning on the system, the console
terminal should display the language selection menu as shown in the
system installation manual. You can find that manual in the system
Customer Hardware Information binder.
NOTE: On some older terminals that do not support multiple languages,
the language selection menu does not appear and the system defaults to
English and runs its power-up self-tests.
5. If the language selection menu is displayed, select a language by typing
the number corresponding to your choice and pressing Return .
After you select a language, the system runs its power-up self-tests.
Within a few moments, the console terminal should display a series
of numbers as the system tests itself. The system operation manual
shows the display after a successful power-up test.

Installation

2–41

6. If the self-tests do not start or fail to complete successfully the system
may have a problem. Refer to the system troubleshooting manual for
instructions. You can find the troubleshooting manual in the system
Customer Hardware Information binder.
If the self-tests run successfully and you have selected a language,
set the power-up mode or operation switch to the Run position
(Figure 2–30). That setting allows you to power up without having
to select a language each time.
Figure 2–30: Setting the Power-Up Mode or Operation Switch

MLO-004255

2.13 Configuring the KFQSA Adapter and the
Expanded System
If the system is supported by the KFQSA storage adapter, you may need to
complete the procedures listed below:
•

If the system is factory configured and is not part of a cluster, proceed
to Section 2.14.

•

If the system is not factory configured, configure the KFQSA adapter
for the devices that are included in the expanded system as described
in the KFQ Storage Adapter Installation and User Manual.

•

Then, if the system is part of a cluster, change the ISE default allocation
class as described in the KFQ Storage Adapter Installation and User
Manual.

After completing the applicable procedures described above, continue with
the following section.

2–42 R400X Expander Installation and Maintenance

2.14 Programming ISE Unit Numbers for Systems
with Multiple DSSI Busses
When a system uses more than one DSSI bus and a nonzero system
allocation class, you need to assign new unit numbers for ISEs on one or
more of the busses, as unit numbers for ISEs throughout the system must
be unique.
If you are adding the expander to a system with ISEs on more than one
DSSI bus and the system uses a nonzero allocation class, refer to Appendix
B for instructions on programming ISE unit numbers and overriding default
values.

2.15 Closing the Door
The final steps of the installation are:
•

Attaching the panel or closing the door on the system enclosure

•

Closing the door on the expander

Attach the panel or close the door on the system enclosure as described
in the system operation manual. You can find that manual in the system
Customer Hardware Information binder.
Close the front doors of the R400X expander by setting the door key to the
lowest position and closing the upper and lower doors. When pushing the
doors closed, push gently at the top right of the upper door and the bottom
right of the lower door. To lock the doors, turn the key to the middle
position.

2.16 Postinstallation Requirements
You should run MicroVAX Diagnostic Monitor (MDM) before installing
system software or running the start-up procedure for factory-installed
VMS.
Refer to Appendix A in the system Installation manual for instructions on
the start-up procedures for factory-installed VMS.

Installation

2–43

Chapter 3

FRU Removal and Replacement
This chapter describes how to remove the major field-replaceable units
(FRUs) for the R400X expander.

3.1 List of R400X Expander FRUs
Table 3–1 lists the part numbers for each R400X expander FRU and the
section of this manual that describes its removal procedure. Table 3–2 lists
the expander power cables.

Table 3–1: R400X Expander FRUs
Part Number

FRU Description

Section

00–RF72E–AA/AF
00–RF71E–AA/AF
00–RF31E–AA/AF
00–RZ57E–AA/AF
00–RZ56E–AA/AF
70–25972–01
70–23557–01
70–24697–01
29–28158–01
29–27890–01
54–19091–01
54–18316–01
54–18329–01
29–28159–01
29–27889–01
54–19787–01
54–20136–01
54–19791–01
54–20400–01
17–02706–01
17–02887–01
70–27049–01

RF72 integrated storage element
RF71 integrated storage element
RF31 integrated storage element
RZ57 integrated storage element
RZ56 integrated storage element
RF72 head-disk assembly
RF71 head-disk assembly
RF31 head-disk assembly
RZ57 head-disk assembly
RZ56 head-disk assembly
RF72 electronic control module
RF71 electronic control module
RF31 electronic control module
RZ57 electronic control module
RZ56 electronic control module
RF-series ISE interface card
RZ-series ISE interface card
RF-series ISE remote front panel module
RZ-series ISE remote front panel module
RF-series ISE remote front panel cable
RZ-series ISE remote front panel cable
RF-series ISE front panel

Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1
Section 3.3.1.3
Section 3.3.1.3
Section 3.3.1.2
Section 3.3.1.2
Section 3.3.1.4
Section 3.3.1.4
Section 3.3.1

FRU Removal and Replacement

3–1

Table 3–1 (Cont.): R400X Expander FRUs
Part Number

FRU Description

Section

70–27049–03
70–27414–01
00–TLZ04–JA/JF
54–20438–01
54–20136–03
17–01936–02
70–27044–02
17–02493–01
M7493–PA
70–27406–01
70–27406–02
12–31500–01
00–H7874–00
70–27047–01
70–27048–02
54–19859–01
12–30552–01
12–29258–01
12–17119–01
17–02638–01
17–02637–01

RZ-series ISE front panel
Drive filler panel
TLZ04 Tape Drive
TLZO4 tape drive front panel module
TLZO4 tape drive interface card
TLZO4 tape drive ID cable
Status panel
Status panel cable
SCSI connector module
DSSI jumper assembly
DSSI connector assembly
Fan, 6" 24 Vdc
Power supply
Upper door
Lower door
R400X backplane
SCSI Terminator
DSSI Terminator
Plastic Key
BC09F–10 (BA400-series power bus cable)
BC09G–10 (BA200-series-to-BA400-series Power
Bus Cable)

Section 3.3.1
Section 2.5.1
Section 3.3.2
Section 3.3.2
Section 3.3.2
Section 3.3.2
Section 3.3.3
Section 3.3.3
Section 3.3.4
Section 3.3.5
Section 3.3.5
Section 3.3.6
Section 3.3.7
Section 3.3.8
Section 3.3.8
Section 3.3.8

Table 3–2: R400X Expander Power Cables
Part Number

Voltage

Countries

BN20A–2E
BN20B–2E
BN22E–2E
BN22D–2E

120 Vac
250 Vac
240 Vac
240 Vac

BN22F–2E
BN22C–2E
BN22H–2E
BN22J–2E
BN22K–2E
BN22L–2E

220 Vac
240 Vac
220 Vac
250 Vac
240 Vac
240 Vac

USA and Canada
USA and Japan
UK and Ireland
Austria, Belgium, Czechoslovakia, Finland, France,
Germany, Hungary, Netherlands, Norway, Poland,
Portugal, Spain, Sweden
Switzerland
Australia and New Zealand
Denmark
Italy
India
Israel

3–2 R400X Expander Installation and Maintenance

3.2 Initial Procedure to Access FRUs
CAUTION:
•

Only qualified service personnel should remove or replace FRUs.

•

Before you remove or replace FRUs, always set the power switch to off
(0) and unplug the ac power cord from the wall outlet.

•

Static electricity can damage integrated circuits. Use the grounded wrist
strap and antistatic mat found in the Antistatic Kit (PN 29–26246) when
you work with the internal parts of this expander.

Before you can remove FRUs from the R400X expander, you must open the
front door as described in Chapter 1.

FRU Removal and Replacement

3–3

3.3 Removal Procedures for R400X FRUs
The following sections describe the removal procedure for a specified fieldreplaceable unit (FRU). Unless otherwise indicated, you can replace an
FRU by reversing the steps in the removal procedure.
The major FRU locations are shown in Figure 3–1.
Figure 3–1: Locations of Field-Replaceable Units (FRUs)

Status Panel

SCSI Panel

Power Supply

DSSI Jumper
Assembly

DSSI Connector
Assembly

Fans
Integrated Storage Assemblies (ISEs)
MLO-004256

3–4 R400X Expander Installation and Maintenance

3.3.1 Replacing RF-/RZ- Series ISEs
This section describes how to replace RF- or RZ-series ISEs. In addition,
procedures are provided to replace the following individual FRUs that make
up the mounting hardware for the integrated storage element:
•

ISE front panel module

•

Interface card assembly

•

Remote front panel cable

For information on troubleshooting strategy, error analysis, and
diagnostics, as well as information on removal and replacement of the drive
module and head-disk assembly (HDA), refer to the appropriate service
manual for the device. Replacing the drive module on RF-series ISEs does
not require removal of the ISE bracketry.
3.3.1.1 Removing an ISE
Use the following instructions to remove an RF-/RZ-series ISE. Refer to
Figure 3–2.
NOTE: The ISE figures throughout this chapter show the RF-series variety.
CAUTION: Static electricity can damage integrated circuits. Use the wrist
strap and antistatic mat found in the Antistatic Kit (PN 29–26246) when
you work with the internal parts of a computer system.
Handle ISEs with care. Dropping or bumping the ISE can damage the disk
surface. Carry or hold the ISEs by their metal brackets to avoid damaging
the drive module.

FRU Removal and Replacement

3–5

1. Loosen the single captive Phillips screw that secures the ISE front panel
(Figure 3–2A).
2. Separate the ISE front panel from the enclosure, being careful of the
remote front panel cable, which is connected to the ISE front panel.
NOTE: If the cause of the ISE failure is undetermined, inspect the
connection of the remote front panel cable and the ISE front panel
module. The cable may not be connected securely, or the cable or
connector is defective.
If the front panel module appears to be the problem, refer to
Section 3.3.1.2 for instructions on replacing the ISE front panel module
(PN 54–19791–01 RF-series, PN 54–20400–01 RZ-series). To replace the
remote front panel cable, continue removing the ISE and then refer to
Section 3.3.1.4 for instructions on replacing the remote front panel cable
(PN 17–01936–02 RF-series, PN 17–02887–01 RZ-series).
3. Unplug the remote front panel cable from the module inside the ISE
front panel and set the front panel aside (Figure 3–2B).
4. Loosen the upper and lower captive screws that hold the ISE in place
(Figure 3–2C).
5. Using the upper and lower finger cutouts on the ISE bracketry, carefully
pull the ISE out of its backplane connector and slide the drive out of
the enclosure. Support the weight of the ISE at the lower bracket as
the ISE clears the enclosure (Figure 3–2C).
CAUTION: Do not touch the drive module. The drive module contains
sensitive electronic circuitry.
NOTE: If the cause of the ISE failure is undetermined, inspect the
condition of the interface card and its associated cables and cable
connections. Refer to Section 3.3.1.3 for instructions on replacing the
interface card assembly (PN 54–19787–01 RF-series, PN 54–20136–01
RZ-series).

3–6 R400X Expander Installation and Maintenance

Figure 3–2: Removing an ISE

Phillips Screw

Remote Front
Panel Cable

Velcro

Captive Screws

Finger Cutouts
MLO-004210

To install a new or replacement ISE, refer to Section 2.5.1.

FRU Removal and Replacement

3–7

3.3.1.2 Replacing the ISE Front Panel Module
This procedure assumes you have completed steps one and two in
Section 3.3.1.1. Use the following instructions to remove the ISE front
panel module (PN 54–19791–01 RF-series, PN 54–20400–00 RZ-series) and
refer to Figure 3–3.
1. Unplug the remote front panel cable from its connector on the remote
front panel module.
2. Remove the bus node ID plug on the ISE front panel by pulling it
straight out.
3. Lift the two plastic tabs that hold the front panel module in place and
remove the module.
4. Reverse the procedure to install a module.
Figure 3–3: Removing an ISE Front Panel Module

Plastic Tabs

MLO-004249

3–8 R400X Expander Installation and Maintenance

3.3.1.3 Replacing the Interface Card Assembly
Use the following instructions to replace the interface card assembly
(PN 54–19787–01 RF-series, PN 54–20136–01 RZ-series). To remove the
interface card assembly, first remove the ISE upper bracket.
3.3.1.3.1 Removing the ISE Upper Bracket
This procedure assumes you have removed the ISE as described in
Section 3.3.1.1. Remove the ISE upper bracket as follows:
1. Place the ISE on an antistatic mat.
2. Remove the two Phillips screws at the rubber shock bushings that
secure the upper bracket to the head-disk assembly (Figure 3–4).
NOTE: RF72s and RF71s are secured to the brackets using the outer
bushing positions. RF31s are secured at the second and fourth (from
the front) bushing positions.
CAUTION: Early models of the RF-series ISEs use four screws of two
different lengths to secure the upper and lower brackets. The two longer
screws (by one-eighth of an inch) must only be used in the shock bushing
toward the back of the drive.

FRU Removal and Replacement

3–9

Figure 3–4: Removing Bracket Screws

MLO-004213

3. Slide the interface card assembly up and lift off the upper bracket
(Figure 3–5).

3–10 R400X Expander Installation and Maintenance

Figure 3–5: Removing the ISE Upper Bracket

Upper Bracket

Interface Card
Assembly

MLO-004214

3.3.1.3.2 Removing the Interface Card Assembly
Remove the interface card assembly as follows:
1. Unplug the 5-pin (RF-series) or 4-pin (RZ-series) power cable, the 50pin signal cable, and the remote front panel cable from their connectors
on the controller module.
NOTE: Observe cable routing to ensure that you route the cables
properly when reassembling.
2. Lift and remove the plastic interface card assembly being careful to
guide the cables through the cutout in the metal bracket (Figure 3–6).
3. To remove the plastic assembly from the interface card, remove the two
Phillips screws that hold it in place (Figure 3–6).

FRU Removal and Replacement

3–11

4. Reverse the procedure to install the interface card assembly.
Figure 3–6: Removing the Interface Card Assembly

Interface Card
Assembly

Phillips
Screws

MLO-004257

3.3.1.4 Replacing the Remote Front Panel Cable
To remove the remote front panel cable, you first remove the ISE as
described in Section 3.3.1.1 and the ISE upper bracket as described in
Section 3.3.1.3.1. After completing those steps, remove the ISE lower
bracket and remote front panel cable. See the following sections.
3.3.1.4.1 Removing the ISE Lower Bracket
Remove the ISE lower bracket by removing the two Phillips screws at
the rubber shock bushings that secure the lower bracket to the head-disk
assembly (Figure 3–7).
3.3.1.4.2 Removing the Remote Front Panel Cable
NOTE: Observe cable routing to ensure that you route the cables properly
when reassembling.
To remove the remote front panel cable, unplug the cable from its connector
on the drive module, then pull the cable free from the lower bracket at the
two points where the cable is secured by Velcro. Reverse the procedure to
install the remote front panel cable.

3–12 R400X Expander Installation and Maintenance

Figure 3–7: Removing the Remote Front Panel Cable

Remote Front
Panel Cable

Cable Velcro Pads

Bracket Velcro Pads

Bracket Screws

Interface Card Assembly
MLO-004258

3.3.2 Replacing the TLZ04 Tape Drive
This section describes how to replace the TLZ04 tape drive. In addition,
procedures are provided to replace the following individual FRUs that make
up the mounting hardware for the integrated storage element:
•

Tape drive front panel module

•

Interface card assembly

•

ID cable

FRU Removal and Replacement

3–13

For information on troubleshooting strategy, error analysis,
diagnostics, refer to the TLZ04 tape drive service manual.

and

3.3.2.1 Removing the TLZ04 Tape Drive
Use the following instructions to a TLZ04 tape drive. Refer to Figure 3–8.
CAUTION: Static electricity can damage integrated circuits. Use the wrist
strap and antistatic mat found in the Antistatic Kit (PN 29–26246) when
you work with the internal parts of a computer system.
Handle the tape drive with care. Dropping or bumping it can damage the
drive. Carry or hold the drive by its metal brackets to avoid damaging the
drive.
1. Loosen the single captive Phillips screw that secures the TLZ04 front
panel (Figure 3–8A).
2. Separate the TLZ04 front panel from the enclosure, being careful of the
ID cable, which is connected to the TLZ04 front panel.
NOTE: If the cause of the drive failure is undetermined, inspect the
connection of the ID cable and the TLZ04 front panel. The cable may
not be connected securely, or the cable or connector is defective.
If the front panel appears to be the problem, refer to Section 3.3.2.3
for instructions on replacing the TLZ04 front panel. To replace the ID
cable, continue removing the tape drive and then refer to Section 3.3.2.2
for instructions on replacing ID cable (PN 17–01936–02).
3. Unplug the remote ID cable from the TLZ04 front panel and set the
front panel aside (Figure 3–8B).
4. Loosen the upper and lower captive screws that hold the drive in place
(Figure 3–8C).
5. Using the upper and lower finger cutouts on the drive bracketry,
carefully pull the drive out of its backplane connector and slide the
drive out of the enclosure. Support the weight of the drive at the lower
bracket as the drive clears the enclosure (Figure 3–8C).
NOTE: If the cause of the drive failure is undetermined, inspect the
condition of the interface card and its associated cables and cable
connections. Refer to Section 3.3.2.4 for instructions on replacing the
interface card assembly (PN 54–20136–03).

3–14 R400X Expander Installation and Maintenance

Figure 3–8: Removing the TLZ04 Tape Drive

Phillips Screw

B
ID Cable

Captive Screw

Finger Cutouts
MLO-005795

To install a new or replacement TLZ04, refer to Section 2.5.2.

FRU Removal and Replacement

3–15

3.3.2.2 Replacing the ID Cable
NOTE: Observe cable routing to ensure that you route the cables properly
when reassembling.
To remove the ID cable, you first remove the drive and unplug one end of
the ID cable as described in Section 3.3.2.1. Unplug the opposite end of the
ID cable from the rear of the tape drive (Figure 3–9).
Figure 3–9: Removing the ID Cable

ID Cable
Connector

MLO-005796

3–16 R400X Expander Installation and Maintenance

3.3.2.3 Replacing the TLZ04 Front Panel Module
This procedure assumes you have completed steps one and two in
Section 3.3.2.1. Use the following instructions to remove the TLZ04 front
panel module (PN 54–20438–01) and refer to Figure 3–10.
1. Unplug the ID cable from its connector on the TLZ04 panel.
2. Remove the bus node ID plug on the TLZ04 front panel by pulling it
straight out.
3. Lift the plastic tab that holds the front panel module in place and
remove the module.
4. Reverse the procedure to install a module.
Figure 3–10: Removing the TLZ04 Front Panel Module

Plastic Tab

35%

MLO-005797

FRU Removal and Replacement

3–17

3.3.2.4 Replacing the Interface Card Assembly
Use the following instructions to replace the interface card assembly (PN
54–20136–03). To remove the interface card assembly, first remove the
upper mounting bracket.
3.3.2.4.1 Removing the Upper Mounting Bracket
This procedure assumes you have removed the drive as described in
Section 3.3.2.1. Remove the drive upper bracket as follows:
1. Place the drive on an antistatic mat.
2. Remove the two Phillips screws at the rubber shock bushings that
secure the upper bracket to the drive (Figure 3–11).
Figure 3–11: Removing Bracket Screws

MLO-005799

3. Slide the interface card assembly up and lift off the upper bracket
(Figure 3–12).

3–18 R400X Expander Installation and Maintenance

Figure 3–12: Removing the Upper Mounting Bracket

Upper Bracket

Interface Card
Assembly

MLO-005800

FRU Removal and Replacement

3–19

3.3.2.4.2 Removing the Interface Card Assembly
Remove the interface card assembly as follows:
1. Unplug the 4-pin power cable, the 50-pin signal cable, and the remote
front panel cable from their connectors on the controller module.
NOTE: Observe cable routing to ensure that you route the cables
properly when reassembling.
2. Lift and remove the plastic interface card assembly being careful to
guide the cables through the cutout in the metal bracket (Figure 3–13).
3. To remove the plastic assembly from the interface card, remove the two
Phillips screws that hold it in place (Figure 3–13).
4. Reverse the procedure to install the interface card assembly.
Figure 3–13: Removing the Interface Card Assembly

Interface Card
Assembly

Phillips
Screws

MLO-005801

3–20 R400X Expander Installation and Maintenance

3.3.2.5 Removing the Lower Mounting Bracket
Remove the lower mounting bracket by removing the two Phillips screws
at the rubber shock bushings that secure the lower bracket to the drive
(Figure 3–14).
Figure 3–14: Removing Lower Mounting Bracket

ID Cable

Bracket Screws

Interface Card Assembly
MLO-005802

FRU Removal and Replacement

3–21

3.3.3 Removing the Status Panel
The status panel contains the DC OK and Over Temperature Warning
indicators. Remove the status panel according to the following instructions:
1. Open the upper access door.
2. Loosen the captive Phillips screw securing the status panel
(Figure 3–15).
3. Detach the status panel cable.
4. Remove the status panel.
5. Install a status panel in the reverse order.

3
2
1

-- OPEN --

Figure 3–15: Removing the Status Panel

MLO-004934

3–22 R400X Expander Installation and Maintenance

3.3.4 Removing the SCSI Connector Module
The SCSI connector module (M7493–PA) provides connectors to the SCSI
bus, as well as relay circuitry that sequences the power-up of the expander
RF-series ISEs. RF-series ISEs in the top row of drives should power up a
few seconds before RF-series ISEs in the bottom row.
Use the following procedure to remove the SCSI connector module.
1. Note the orientation of external SCSI cables connected to the module.
Carefully label and disconnect the cables.
2. Release the two quarter-turn captive screws that hold the module to
the card cage (Figure 3–16).
3. Unlock the module’s handle and remove the module from the card cage.
NOTE: Figure 3–16 shows the factory setting of the jumper. This setting
properly sequences the power-up order of RF-series ISEs (upper RFseries ISEs first).

FRU Removal and Replacement

3–23

Figure 3–16: Removing the SCSI Connector Module

Factory Setting

MLO-004935

3–24 R400X Expander Installation and Maintenance

3.3.5 Removing the DSSI Jumper Assembly or a DSSI
Connector Assembly
To remove a DSSI jumper assembly or DSSI connector assembly, release
the two quarter-turn captive screws and slide the module out by its handle
(Figure 3–17).
Figure 3–17: Removing a DSSI Jumper or Connector Assembly

Connector Assembly

Handle

Quarter-Turn
Fasteners

MLO-004235

3.3.6 Removing Fans
A fan tray containing two 6-inch fans provides cooling for the R400X
expander. The fans are controlled by a heat sensor that accurately varies
the fan speed according to the expanders internal temperature. The two
fans are attached to the metal tray by a single mounting bracket. The fan
tray slides under the card cage and fastens to the chassis by two captive
screws.
Remove the fans as follows:
1. Open the lower access door.
2. Remove or reroute any option cables away from the fan tray.
3. Unplug the power cord from the ac wall outlet.

FRU Removal and Replacement

3–25

4. Loosen the two captive screws that hold the fan tray to the chassis
(Figure 3–18).
Figure 3–18: Removing the Fan Tray

Captive Screws
MLO-004936

5. Pull out the fan tray (Figure 3–18) and turn it over (Figure 3–19).
NOTE: You may need to lift up the front of the fan tray while sliding it
out.
6. Disconnect the dc power cable connector from the fan.
7. Remove the center screw and bracket securing both fans to the tray
(Figure 3–19).
8. Remove the fans.
NOTE: It is recommended that fans be replaced in sets (or pairs).
9. To replace the fan tray, reverse the procedure.

3–26 R400X Expander Installation and Maintenance

Figure 3–19: Removing the Fan Assembly

Continuity Clip
Mounting
Bracket

MLO-004221

3.3.7 Removing the Power Supply
The expander enclosure has one power supply. To remove the power supply,
follow the removal procedure carefully.
DANGER—HIGH VOLTAGE
.
This warning symbol indicates risk of electric shock.

FRU Removal and Replacement

3–27

WARNING: The power cord must be removed from this unit’s appliance
inlet to disconnect ac power. The circuit breaker power switch is NOT a
disconnect device.
A plate covers one fastener that secures the system to the expander enclosure
in such a way that the power cord set must be removed before this fastener
can be disconnected. This fastener MUST BE TIGHTENED when service is
completed before replacing the power cord.
WARNING: The power supply stores an electrical charge which, if not bled
(discharged) correctly, could cause physical harm. Bleed the power supply
before removing. To bleed the power supply, remove the power cord and push
up on the metal plate on the bottom of the power supply. This sliding plate
depresses the bleed switch or button located under the power supply. Hold
the cover plate in the up position for at least 45 seconds after removing the
ac power cord. This discharges the system and makes the power supply safe
to handle.
1. Open the lower access door.
2. Turn off the H7874 power supply switch and unplug the ac power cord
from the wall outlet.
3. Remove the power cord from the power supply (Figure 3–20).

3–28 R400X Expander Installation and Maintenance

Figure 3–20: Removing the Power Supply Cord

MLO-004937

4. Remove ground cable (if any) and power control bus cables (if any).
5. Release the top power supply captive screw.
6. Release the bottom captive screw by raising the metal plate up against
the bottom of the power supply and hold for 45 seconds. The bottom
screw is exposed when the plate is held up in the bleed position.
(Figure 3–21). Release the bottom screw.

FRU Removal and Replacement

3–29

Figure 3–21: Discharging the Power Supply

Discharge
Switch

Captive
Screw

Cover Plate

MLO-004938

7. Grasp the handle with one hand and pull the supply out from the
backplane connection (Figure 3–22).
8. Remove the power supply.

3–30 R400X Expander Installation and Maintenance

Figure 3–22: Removing Power Supply

MLO-004939

Installation Note
When installing the power supply, make sure the top and bottom edges of
the supply are aligned and mounted in the plastic guides in the enclosure.
Fan Speed Control Disable
A system manager may request that you override the power supply’s
temperature sensor so that the fans run at maximum speed. This action
increases overall system reliability, as the expander’s internal temperature
will be lower. Before disabling the factory setting, be sure that the increased
fan noise is not objectionable to the users.
Figure 3–23 shows the location and settings for the fan speed control (FSC)
jumper.

FRU Removal and Replacement

3–31

Figure 3–23: Fan Speed Control Jumper

Factory
Setting

FCS
Disabled

MLO-004204

3.3.8 Removing the R400X Backplane
The backplane is the only part of the R400X expander that must be removed
from the rear. To remove the backplane, follow the steps listed below:
1. Turn off the expander power switch (0) and unplug the ac power cord
from the wall outlet.
2. From the front of the expander:
a. Unlock and open both doors.
b. Remove the top door by swinging it out past 90 degrees and lifting
it off the hinges.
c.

Remove the bottom door by swinging it out past 90 degrees and
lifting it off the hinges.

3–32 R400X Expander Installation and Maintenance

d. To remove the right door latching bracket, remove the three selftapping screws and one 6/32 screw. Remove the bracket. Remove
the remaining self-tapping screws (Figure 3–24).
e.

To remove the left hinge bracket, remove the five self-tapping screws
(Figure 3–24).

3. Slide the R400X expander’s outer shell back and off. Lay the shell and
other hardware aside.

FRU Removal and Replacement

3–33

Figure 3–24: Outer Shell Removal

Door Hinge
Outer Shell

Bracket Pin

Upper Door

Lower Door
Door Brackets

MLO-004940

4. Remove all storage devices from the expander (Section 3.3.1.1 and
Section 3.3.2).
5. Remove the status panel and its cable (Section 3.3.3).
6. Remove the SCSI connector module (Section 3.3.4).

3–34 R400X Expander Installation and Maintenance

7. Remove the DSSI jumper and connector assemblies (Section 3.3.5).
8. Remove the fan tray assembly (Section 3.3.6).
9. Remove the power supply. See Warning Note (Section 3.3.7).
10. Turn the expander around so that you face the rear panel (Figure 3–25).
11. Remove the 18 screws that hold the rear panel. Lay the panel aside
(Figure 3–25).
Figure 3–25: Rear Panel Removal

MLO-004224

FRU Removal and Replacement

3–35

12. Remove the five 6/32 screws that hold the backplane to the enclosure.
Remove the backplane (Figure 3–26).
Figure 3–26: Removing the Backplane

Remove Last
Insert First
4
5
1

2
MLO-004941

3.3.9 Installing a Backplane
Complete the following steps to install the backplane:
1. Align the new backplane assembly with the rear of the R400X expander.
Insert the five screws in the order shown in Figure 3–26 to align the
backplane against the card cage. Tighten all screws.
2. Install the metal cover over the backplane, using the 18 screws
previously removed, starting with the upper left. Do not tighten screws
until all are inserted properly; then tighten.
3. Install the power supply (Section 3.3.7).
4. Install the status panel and its cable (Section 3.3.3).
5. Install the SCSI connector module (Section 3.3.4).

3–36 R400X Expander Installation and Maintenance

6. Install the storage devices (Section 2.5).
7. Install the fan tray (Section 3.3.6).
8. Install the DSSI jumper and connector assemblies (Section 3.3.5).
9. Connect all external cables.
10. Position the outer shell on the chassis and move it forward toward the
hinge and latching bracket positions.
11. Install two of the self-tapping screws (right side, second and fourth from
the bottom) to hold the shell against the chassis.
12. Install the right door latching bracket, using the three self-tapping
screws and the 6/32 screw (Figure 3–27).
13. Install the left hinge bracket with the self-tapping screws previously
removed (Figure 3–27).
14. Tighten all screws.
15. Install the upper and lower doors (Figure 3–27). Position the doors at
approximately 90 degrees (half open position) and hook the door over
the hinge bracket pin. They should drop into position.
NOTE: Check and adjust the door latching bracket alignment to ensure
the door latch clears the door latching bracket.

FRU Removal and Replacement

3–37

Figure 3–27: Door Installation

Door Hinge
Outer Shell

Bracket Pin

Upper Door

Lower Door
Door Brackets

MLO-004940

3–38 R400X Expander Installation and Maintenance

Appendix A

DSSI Cabling for BA200-Series
Enclosures or Earlier Systems
This appendix provides illustrations of expanded systems that do not use
the BA440 or BA430 enclosures. These earlier system enclosures require
the H4010–AA hardware kit to provide proper grounding and power bus
cabling. Information on installing these cables is included in the H4010–
AA hardware kit.

DSSI Cabling for BA200-Series Enclosures or Earlier Systems

A–1

Figure A–1: Expanded MicroVAX 3900, MicroVAX 3600 or DECsystem
5400 Cabinet

PBC

Ground
Cable

MLO-004248

A–2 R400X Expander Installation and Maintenance

Figure A–2: Expanded MicroVAX 3400, 3500, 3800 or DECsystem 5400
Pedestal

PBC

Ground
Cable

MLO-004250

DSSI Cabling for BA200-Series Enclosures or Earlier Systems

A–3

Figure A–3: Expanded VAX 4000 Model 200 (BA215) or MicroVAX 3300

PBC

Ground
Cable

MLO-004251

A–4 R400X Expander Installation and Maintenance

Figure A–4: Expanded MicroVAX II (630QY, 630QZ)

Ground
Cable

MLO-004252

DSSI Cabling for BA200-Series Enclosures or Earlier Systems

A–5

Figure A–5: Expanded MicroVAX II (630QB)

Ground
Cable

MLO-004253

A–6 R400X Expander Installation and Maintenance

Figure A–6: Expanded MicroVAX II (630QE)

Ground
Cable

PBC

MLO-004254

DSSI Cabling for BA200-Series Enclosures or Earlier Systems

A–7

Appendix B

Programming Parameters for RF-Series
ISEs
This appendix describes the procedures for setting and examining
parameters for RF-series ISEs.
Two types of DSSI storage adapters are available for VAX 4000, MicroVAX
3000-series, MicroVAX II, and DECsystem systems: an embedded DSSI
host adapter that is part of the CPU and the KFQSA storage adapter.
Each storage adapter provides a separate DSSI bus that can support up
to seven RF-series ISEs (six ISEs for a dual-host configuration). The
adapters make a connection between the CPU and the requested ISE on
their respective DSSI bus. Each ISE has its own controller and server that
contain the intelligence and logic necessary to control data transfers over
the DSSI bus.

B.1 RF-Series ISE Parameters
Six principal parameters are associated with each RF-series ISE:
•

Bus Node ID

•

ALLCLASS

•

UNITNUM

•

FORCEUNI

•

NODENAME

•

SYSTEMID

NOTE: Each of the above ISE parameters, with the exception of the Bus
Node ID, are programmed and examined using the console-based Diagnostic
and Utility Protocol (DUP) driver utility. The ISE Bus Node ID is physically
determined by the numbered Bus Node ID plug that inserts into the ISE front
panel.

Programming Parameters for RF-Series ISEs

B–1

A brief description of each parameter follows:
The Bus Node ID parameter is provided by the bus node ID plug on the
ISE front panel. Each DSSI bus can support up to seven ISEs, bus nodes
0 through 6 (0 through 5 for dual-host systems). Refer to your Operation
manual for instructions on changing bus node ID plugs.
The ALLCLASS parameter determines the device allocation class. The
allocation class is a numeric value from 0 to 255 that is used by the VMS
operating system to derive a path-independent name for multiple access
paths to the same ISE. RF-series ISEs are shipped from the factory with
a default allocation class of zero. Each RF-series ISE to be served to the
cluster should have an allocation class that matches the allocation class
of the host system. Refer to the VMS VAXcluster manual for rules for
specifying allocation class values.
The UNITNUM parameter determines the unit number of the ISE. By
default, the ISE unit number is supplied by the bus node ID plug on the
ISE front panel. Certain multiple bus configurations, described later in
this section, require that the default values be replaced with unique ISE
unit numbers. To set unit numbers and override the default values, you
use the console-based DUP driver utility to supply values to the UNITNUM
parameter and to set a value of zero to ISE parameter FORCEUNI.
The FORCEUNI parameter controls the use of UNITNUM to override
the default ISE unit number supplied by the bus node ID plug. When
FORCEUNI is set to a value of zero, the operating system uses the value
assigned to the UNITNUM parameter; when FORCEUNI is set to a value
of one, the operating system uses the value supplied by the bus node ID
plug.
The NODENAME parameter allows each ISE to have an alphanumeric
node name of up to eight characters. RF-series ISEs are shipped from the
factory with a unique identifier, such as R7CZZC, R7ALUC, and so on. You
can provide a node name of your choosing if you prefer.
The SYSTEMID parameter provides a number that uniquely identifies
the ISE to the operating system. This parameter is modified only when
replacing an ISE. Only Customer Services representatives and qualified
self-maintenance customers can remove an ISE.
The following describes how the operating system uses the ISE parameters
to form unique identifiers for each ISE. Configurations that require you to
assign new unit numbers for ISEs are also described.
With an allocation class of zero, the operating system can use the default
parameter values to provide each ISE with a unique device name. The
operating system uses the node name along with the device logical name
in the following manner:

B–2 R400X Expander Installation and Maintenance

NODENAME$DIAu
where:
NODENAME is a unique node name and u is the unit number.
With a nonzero allocation class, the operating system relies on unit number
values to create a unique device name. The operating system uses the
allocation class along with the device logical name in the following manner:
$ALLCLASS$DIAu
where:
ALLCLASS is the allocation class for the system and ISEs, and u is a
unique unit number.
Using the KFQSA storage adapter and mass storage expanders, you can
fill multiple DSSI busses. Each bus can have seven ISEs (bus nodes 0–
6). When a second bus is added to the system, and your system is using
a nonzero allocation class, you need to assign new unit numbers for ISEs
on one of the busses, as the unit numbers for ISEs throughout the system
must be unique. Table B–1 illustrates the need to program unit numbers
for a system using both more than one DSSI bus and a nonzero allocation
class. In the case of the nonzero allocation class, the operating system sees
the ISEs as having duplicate device names.

Programming Parameters for RF-Series ISEs

B–3

Table B–1: How the VMS Operating System Identifies the ISEs
Allocation Class=0

Nonzero Allocation
ALLCLASS=1)

R7CZZC$DIA0

$1$DIA0

R7ALUC$DIA1

$1$DIA1

R7EB3C$DIA2

$1$DIA2

R7IDFC$DIA0

$1$DIA0

R7IBZC$DIA1

$1$DIA1

R7IKJC$DIA2

$1$DIA2

R7ID3C$DIA3

$1$DIA3

R7XA4C$DIA4

$1$DIA4

R7QIYC$DIA5

$1$DIA5

R7DA4C$DIA6

$1$DIA6

Class

(Example:

Indicates duplicate device names. For one of the DSSI busses, the unit numbers need to be
reprogrammed to avoid this error.

The following instructions describe how to change ISE parameters using
the DUP driver utility. In the sample procedures, the allocation class will
be set to 2, the ISEs will be assigned new unit numbers, and the system
disk will be assigned a new node name.
1. Enter the console mode.
The procedure for programming internal parameters for RF-series ISEs
requires that you issue commands to those RF-series ISEs at the console
prompt (>>>). You may enter these commands in either uppercase or
lowercase letters. Unless otherwise instructed, enter each command,
then press Return.
Enter console mode as follows:
a. Set the Break Enable/Disable switch on the CPU cover panel to the
enable position.
b. Set the power switch for each unit (both hosts for a dual-host
system, and any expanders for expanded systems) to on (1).
Wait for the system to display the console prompt (>>>).

B–4 R400X Expander Installation and Maintenance

2. Make sure the ISEs for which you want to set parameters are on line
and are not write protected. The Run/Ready button should be (lit), and
the Write-Protect button should be out (not lit).
3. For systems with embedded DSSI, enter SHOW DSSI at the console
prompt for a display of all DSSI devices in your expanded system. For
KFQSA-based DSSI, enter SHOW UQSSP.
The firmware displays two lines of information for each ISE. The
first line contains the node number and node name. The second line
contains the device name and unit number followed by the device type
in parentheses.
For embedded DSSI, the device name consists of the letters DIAn and
the DSSI host adapter is identified by an asterisk (*). For KFQSAbased DSSI, the device name consists of the letters DUcn, where c is
the controller letter and n is a unique unit number.
The following examples show a system with three RF31 ISEs. Example B–1
shows a system with embedded DSSI and Example B–2 shows a system
with KFQSA-based DSSI.
Example B–1: SHOW DSSI Display (Embedded DSSI)
>>>SHOW DSSI
DSSI Node 0 (R7CZZC)
-DIA0 (RF31)
DSSI Node 1 (R7ALUC)
-DIA1 (RF31)
DSSI Node 2 (R7EB3C)
-DIA2 (RF31)
DSSI Node 7 (*)
>>>

Programming Parameters for RF-Series ISEs

B–5

Example B–2: SHOW UQSSP Display (KFQSA-Based DSSI)
>>>SHOW UQSSP
UQSSP Disk Controller 0 (772150)
-DUA0 (RF31)
UQSSP Disk Controller 1 (760334)
-DUB1 (RF31)
UQSSP Disk Controller 2 (760340)
-DUC2 (RF31)
UQSSP Tape Controller 0 (774500)
-MUA0 (TK70)

In this example, each ISE will be assigned an allocation class of 2, and the
system disk will be given a new node name. Also, ISEs DIA0, DIA1, and
DIA2 (or DUA0, DUB1, and DUC2) will be assigned unit numbers 10, 11,
and 12, respectively.

B.2 Entering the DUP Driver Utility
To examine and change internal RF-series ISE parameters, you must first
activate the DUP driver utility by setting host to the specific ISE for which
you want to modify or examine parameters.

Use the following commands for embedded DSSI:
For VAX 4000 Model 300 systems:
SET HOST/DUP/DSSI/BUS:<bus_number> <node_number> PARAMS

where:
<bus_number> is the DSSI bus number (0 or 1), and <node_number>
is the bus node ID (0–6) for the ISE on the bus.
For all other systems with an embedded DSSI bus:
SET HOST/DUP/DSSI <node_number> PARAMS

where:
<node_number> is the bus node ID (0–6) for the ISE on the bus.

Use the following command for KFQSA-based DSSI:
SET HOST/DUP/UQSSP/DISK <node_number> PARAMS

where:

B–6 R400X Expander Installation and Maintenance

<node_number> is the bus node ID (0–6) for the ISE on the bus.
The following examples show the commands entered at the console prompt
to start the DUP server for the ISE at node 0. In Example B–3, you enter
SET HOST/DUP/DSSI 0 PARAMS for embedded DSSI. In Example B–4, you
enter SET HOST/DUP/UQSSP/DISK 0 PARAMS for KFQSA-based DSSI.
Example B–3: Starting the DUP Driver Utility (Embedded DSSI)
>>>SET HOST/DUP/DSSI 0 PARAMS
Starting DUP server...
Copyright (c) 1990 Digital Equipment Corporation
PARAMS>

Example B–4: Starting the DUP Driver Utility (KFQSA-Based DSSI)
>>>SET HOST/DUP/UQSSP/DISK 0 PARAMS
Starting DUP server...
Copyright (c) 1990 Digital Equipment Corporation
PARAMS>

B.3 Setting Allocation Class
After entering the DUP driver utility for a specified ISE, you can examine
and set the allocation class for the ISE as follows:
1. At the PARAMS> prompt, enter SHOW ALLCLASS to check the allocation
class of the ISE to which you are currently connected.
2. Enter SET ALLCLASS 2 (or enter the allocation class you desire).
3. Enter SHOW ALLCLASS to verify the new allocation class.
Example B–5 shows the steps for examining and changing the allocation
class for a specified ISE. In the example, the allocation class is changed
from an allocation class of 0 to an allocation class of 2.

Programming Parameters for RF-Series ISEs

B–7

Example B–5: Setting Allocation Class for a Specified ISE
PARAMS>SHOW ALLCLASS
Parameter
Current
--------- ---------------ALLCLASS
0

Default
---------------0

Type
-------Byte

Radix
----Dec

Default
---------------0

Type
-------Byte

Radix
----Dec

PARAMS>SET ALLCLASS 2
PARAMS>SHOW ALLCLASS
Parameter
Current
--------- ---------------ALLCLASS
2

B.4 Setting Unit Number
After entering the DUP driver utility for a specified ISE, you can examine
and set the unit number for the ISE as follows:
1. At the PARAMS> prompt, enter SHOW UNITNUM to check the unit number
of the ISE to which you are currently connected.
2. Enter SET UNITNUM 10 (or enter the unit number you desire).
3. Enter SET FORCEUNI 0 to override the default unit number value
supplied by the bus node ID plug.
4. Enter SHOW UNITNUM to verify the new unit number.
5. Enter SHOW FORCEUNI to verify that the current value for the FORCEUNI
parameter is 0.
Example B–6 shows the steps for changing the unit number of a
specified ISE from unit number 0 to unit number 10.
6. Label the ISE with its unit number, using the unit number labels
shipped with your system. Figure B–1 shows where to affix a unit
number label on the ISE front panel.

B–8 R400X Expander Installation and Maintenance

Example B–6: Setting a Unit Number for a Specified ISE
PARAMS>SHOW UNITNUM
Parameter
Current
--------- ---------------UNITNUM
0

Default
---------------0

Type
-------Word

Radix
----Dec

Parameter
Current
--------- ---------------UNITNUM
10

Default
---------------0

Type
-------Word

Radix
----Dec

PARAMS>SHOW FORCEUNI
Parameter
Current
--------- ---------------FORCEUNI
0

Default
---------------1

Type
-------Boolean

Radix
----0/1

PARAMS>SET UNITNUM 10
PARAMS>SET FORCEUNI 0
PARAMS>SHOW UNITNUM

Figure B–1: Attaching a Unit Number Label to the ISE Front Panel

Attach Unit
Number Label
0

MLO-004237

Programming Parameters for RF-Series ISEs

B–9

B.5 Setting Node Name
After entering the DUP driver utility for a specified ISE, you can examine
and set the node name for the ISE as follows:
1. At the PARAMS> prompt, enter SHOW NODENAME to check the node name of
the ISE to which you are currently connected.
2. Enter SET NODENAME SYSDSK (or enter the desired alphanumeric node
name of up to eight characters).
3. Enter SHOW NODENAME to verify the new node name.
Example B–7 shows the steps for changing the node name of a specified
ISE from the factory-supplied name to SYSDSK.
Example B–7: Changing a Node Name for a Specified ISE
PARAMS>SHOW NODENAME
Parameter
Current
--------- ---------------NODENAME
R7CZZC

Default
---------------RF31

Type
-------String

Radix
----Ascii

Default
---------------RF31

Type
-------String

Radix
----Ascii

PARAMS>SET NODENAME SYSDSK
PARAMS>SHOW NODENAME
Parameter
Current
--------- ---------------NODENAME
SYSDSK

B.6 Setting System ID
NOTE: This parameter is modified only when replacing an ISE. Only
Customer Services representatives and qualified self-maintenance customers
should remove an ISE. All parameters for the replacement ISE should be
programmed to match those of the original ISE. When replacing an ISE, be
sure to set the SYSTEMID parameter to match that of the original.
After entering the DUP driver utility for a specified ISE, you can examine
and set the system ID for the ISE as follows:
1. At the PARAMS> prompt, enter SHOW SYSTEMID to check the system ID of
the ISE to which you are currently connected.
2. Enter SET SYSTEMID System ID (enter the desired serial number-based
system ID).

B–10 R400X Expander Installation and Maintenance

3. Enter SHOW SYSTEMID to verify the new system ID.
Example B–8 shows the steps for changing the system ID of a specified ISE
from the factory-supplied system ID to 1402193310841 (the system ID for
the replacement ISE is programmed to match that of the original ISE).
Example B–8: Changing a System ID for a Specified ISE

PARAMS>SHOW SYSTEMID
Parameter
Current
--------- ---------------SYSTEMID
0402193310841

Default
---------------0000000000000

Type
-------Quadword

Radix
----Hex

Type
-------Quadword

Radix
----Hex

PARAMS>SET SYSTEMID 1402193310841
PARAMS>SHOW SYSTEMID
Parameter
Current
--------- ---------------SYSTEMID
1402193310841

Default
---------------0000000000000

B.7 Exiting the DUP Server Utility
After you have completed setting and examining internal ISE parameters,
enter the WRITE command at the PARAMS> prompt to save the ISE
parameters you have changed using the SET command. The changes are
recorded to nonvolatile memory.
If you have changed the allocation class or node name of an ISE, the DUP
driver utility will ask you to initialize the controller. Answer Yes (Y) to
allow the changes to be recorded and to exit the DUP driver utility.
If you have not changed the allocation class or node name, enter the EXIT
command at the PARAMS> prompt to exit the DUP driver utility for the
specified ISE. Example B–9 shows the procedure for saving parameter
changes. In the example, the controller is initialized.

Programming Parameters for RF-Series ISEs

B–11

Example B–9: Exiting the DUP Driver Utility for a Specified ISE
PARAMS>WRITE
Changes require controller initialization, ok? [Y/(N)] Y
Stopping DUP server...
>>>

NOTE: You must repeat the procedures in this chapter for each ISE for
which you want to change parameters.
Example B–10 shows the display for the SHOW DSSI command for a system
with embedded DSSI after the unit numbers for the ISEs have been changed
from 0, 1, and 2 to 10, 11, and 12. Notice that the bus 0 device names are
now DIA10, DIA11, and DIA12.
Example B–10: SHOW DSSI Display
>>>SHOW DSSI
DSSI Node 0 (SYSDSK)
-DIA10 (RF31)
DSSI Node 1 (R7ALUC)
-DIA11 (RF31)
DSSI Node 2 (R7EB3C)
-DIA12 (RF31)
DSSI Bus 0 Node 7 (*)
>>>

Example B–11 shows the display for the SHOW UQSSP command for a
system with KFQSA-based DSSI.

B–12 R400X Expander Installation and Maintenance

Example B–11: SHOW UQSSP Display (KFQSA-Based DSSI)
>>>SHOW UQSSP
UQSSP Disk Controller 0 (772150)
-DUA0 (RF31)
UQSSP Disk Controller 1 (760334)
-DUB1 (RF31)
UQSSP Disk Controller 2 (760340)
-DUC2 (RF31)
UQSSP Tape Controller 0 (774500)
-MUA0 (TK70)

Programming Parameters for RF-Series ISEs

B–13

Appendix C

Related Documents
The following documents contain information relating to the R400X
expander and the systems it can expand.
Title

Part Number1

R400X Expander Addendum to Customer Hardware Information

EK–R400X–CM

KA670 CPU System Maintenance

EK–347A#–MG

KA660 CPU System Maintenance

EK–498AA–MG

KA655 CPU System Maintenance

EK–306A#–MG

KA650 CPU System Maintenance

EK–180A#–MG

KA640 CPU System Maintenance

EK–179A#–MG

KA630 CPU System Maintenance

EK–178A#–MG

KN210 CPU System Maintenance

EK–329A#–MG

KFQ Storage Adapter Installation and User Manual

EK–KFQSA–IN

RF31 Integrated Storage Element User’s Guide

EK–RF31D–UG

RF71 Integrated Storage Element User’s Guide

EK–RF71D–UG

RF30 Service Guide

EK–RF30D–SV

RF71 Service Guide

EK–RF72D–SV

VAX 4000 Site Preparation Guide

EK–387A#–SP

Micro Systems Site Preparation Guide

EK–O67A#–PG

MicroVAX Site Preparation Guide

EK–239A#–SP

BA123 Enclosure Maintenance

EK–188A#–MG

BA213 Enclosure Maintenance

EK–189A#–MG

1 # = current revision, which is always shipped.