DEC Rackmount DEC 7000 AXP, Rackmount VAX 7000 Installation And Owner's Manual

RackmountDEC7000AXP
andVAX7000Systems

Installation/Owner’sGuide

Order Number: EK-R7000-IN.A01

Revision/Update Information: This is a new manual

December 1993

The reproduction of this material, in part or whole, is strictly prohibited. For copy information,
contact the Digital Education and Training Department, Digital Equipment Corporation, Maynard,
Massachusetts 01754.

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.

FCC NOTICE: This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications.

Any changes or modifications made to this equipment may void the user’s authority to operate this
equipment.

Operation of this equipment in a residential area may cause interference in which case the user
at his own expense will be required to take whatever measures may be required to correct the
interference.

© Digital Equipment Corporation 1993. All Rights Reserved.
Printed in U.S.A.
The following are trademarks of Digital Equipment Corporation: AXP, DEC, VAX, VAX

DOCUMENT, and the DIGITAL Logo.
All other trademarks and registered trademarks are the property of their respective holders.

This document was prepared using VAX DOCUMENT Version 2.1.

Contents

Preface ................................................ ix

1 Introduction

1.1 General ....................................... 1–1

1.2 Laser System Bus (BA700-AA) Chassis ............... 1–3

1.2.1 LSB Chassis Card Cage . ....................... 1–4

1.2.2 LSB Chassis Control Panel ..................... 1–5

1.2.3 LSB Chassis Power Supply ..................... 1–7

1.3 Extended Memory Interface (BA601-AC) Chassis . ...... 1–8

1.3.1 XMI Chassis Card Cage . ....................... 1–9

1.3.2 XMI Chassis Control Panel ..................... 1–10

1.3.3 XMI Chassis Power Supply ..................... 1–13

1.3.4 XMI Chassis I/O Bulkhead...................... 1–16

1.4 Specifications ................................... 1–17

1.4.1 LSB Chassis Specifications ..................... 1–17

1.4.2 XMI Chassis Specifications ..................... 1–18

2 Installation

2.1 Introduction .................................... 2–1

2.2 Site Preparation . . ............................... 2–2

2.2.1 Environmental Requirements ................... 2–2

2.2.2 Electrical Requirements . ....................... 2–2

2.3 Checking the Shipment ........................... 2–3

2.4 Installing the LSB Chassis . ....................... 2–5

2.4.1 Installing the LSB Chassis Slides . ............... 2–6

2.4.2 Installing the LSB Chassis on the Slides ........... 2–11

2.5 Installing the XMI Chassis . ....................... 2–13

2.5.1 Installing the XMI Chassis Slides . ............... 2–14

2.5.2 Installing the XMI Chassis on the Slides ........... 2–18

2.6 Cabling ....................................... 2–20

2.6.1 Connecting the I/O Cable (PN 17-03085-02) . . . ...... 2–20

iii

2.6.2 Connecting the DEC Power Bus Cable (PN

70-31534-01) . ............................... 2–23

2.6.3 Connecting the Console Cable (PN 17-01364-02) ..... 2–24

2.7 Connecting the Power Cords ....................... 2–25

2.7.1 LSB Chassis Power Cord (PN 17-00083-37) . . . ...... 2–25

2.7.2 XMI Chassis Power Cord ....................... 2–25

3 Operation

4 Troubleshooting

5 Removal and Replacement

5.1 Introduction .................................... 5–1

5.2 LSB Chassis Components . . ....................... 5–2

5.2.1 Front Bezel . . ............................... 5–2

5.2.2 Extending the LSB Chassis for Service ............ 5–4

5.2.3 Top Cover ................................... 5–6

5.2.4 CPU and Memory Modules ..................... 5–8

5.2.5 I/O Port Controller (IOP) Module (E2044-AA) . ...... 5–10

5.2.6 Left Side Cover .............................. 5–12

5.2.7 48 Vdc Power Supply (PN 30-39348-02) ............ 5–14

5.2.8 Control Panel (PN 54-21719-01) . . . ............... 5–16

5.2.9 Blower Assembly (PN 12-41009-01) ............... 5–20

5.2.10 AC Input Box (PN 30-39579-01) . . . ............... 5–22

5.3 XMI Chassis Components . . ....................... 5–24

5.3.1 Front Bezel . . ............................... 5–24

5.3.2 Extending the XMI Chassis for Service ............ 5–26

5.3.3 Top Cover ................................... 5–28

5.3.4 Bottom Cover . ............................... 5–29

5.3.5 Control Panel Bezel (PN 70-22117-01) ............. 5–31

5.3.6 Control Panel Module (PN 54-16574-02) ........... 5–33

5.3.7 XTC Timing Module (PN 70-31509-01)............. 5–35

5.3.8 AC Front End Trays (PN 70-27334-01) ............ 5–37

5.3.9 +5 Vdc Regulator Trays (PN 70-29046-01 and

70-29046-02) . ............................... 5–42

5.3.10 Sequencer and Auxiliary DC Voltage Regulator Tray

(PN 70-29046-03) ............................. 5–47

5.3.11 3.3 Vdc/-5.2 Vdc Regulator Tray (PN 70-29046-04) . . . 5–50

5.3.12 24 Vdc Fan (PN 12-23374-07) ................... 5–52

5.3.13 Airflow Sensors (PN 12-36060-01) . ............... 5–54

5.3.14 AC Input Assembly (PN 70-31008-01) ............. 5–56

iv

5.3.15 TF85 Tape Drive ............................. 5–59

5.3.16 TF85 Interface Board . . . ....................... 5–60

5.3.17 RRD42 CD-ROM Reader ....................... 5–61

A Option Installation

A.1 Introduction .................................... A–1

A.2 Accessing the XMI Card Cage ...................... A–1

A.3 Cabling of Options Installed in the XMI Chassis . . ...... A–4

A.4 Installing the 2T-CIXCD-RA Option . . . ............... A–6

B Field Replaceable Units

C Send Us Your Comments

Figures

1–1 Two DEC 7000 AXP and VAX 7000 Systems in an

H9702 Cabinet ............................... 1–2

1–2 LSB (BA700-AA) Chassis with Covers Removed ..... 1–3

1–3 LSB Chassis Control Panel ..................... 1–5

1–4 XMI (BA601-AC) Chassis with Top Cover Removed . . . 1–8

1–5 XMI Chassis Control Panel ..................... 1–10

1–6 Power Supply Tray Assemblies (XMI Chassis Bottom

View) ...................................... 1–15

1–7 I/O Bulkhead . ............................... 1–16

2–1 Contents of Shipping Cartons ................... 2–4

2–2 LSB Chassis Equipment Mounting Slides .......... 2–6

2–3 LSB Chassis Slide Mounting Pattern .............. 2–8

2–4 Installing the Equipment Mounting Slides (Rear View

of Left Slide with Slide Extended) . ............... 2–9

2–5 Installing the LSB Chassis on the Slides ........... 2–12

2–6 XMI Chassis Equipment Mounting Slides .......... 2–14

2–7 XMI Chassis Slide Mounting Pattern .............. 2–16

2–8 Installing the Equipment Mounting Slides (Rear View

of Left Slide with Slide Extended) . ............... 2–17

2–9 Installing the XMI Chassis on the Slides ........... 2–19

2–10 Connecting the I/O Cable to the IOP Module . . ...... 2–21

v

2–11 Connecting the I/O Cable to the XMI Bulkhead

Connector ................................... 2–22

2–12 DEC Power Bus and Console Cable Connectors ...... 2–23

5–1 Removing the Front Bezel from the LSB Chassis .... 5–3

5–2 Extending the LSB Chassis ..................... 5–5

5–3 Removing the Top Cover ....................... 5–7

5–4 Removing the CPU and Memory Modules .......... 5–9

5–5 Removing the IOP Module ...................... 5–11

5–6 Removing the Left Side Cover ................... 5–13

5–7 Removing the 48 Vdc Power Supply ............... 5–15

5–8 DEC Power Bus and Console Cable Connectors ...... 5–17

5–9 Removing the Front Panel ...................... 5–18

5–10 Removing the Control Panel .................... 5–19

5–11 Removing the Blower Assembly . . . ............... 5–21

5–12 Removing the AC Input Box .................... 5–23

5–13 Removing the Front Bezel from the XMI Chassis .... 5–25

5–14 Extending the XMI Chassis ..................... 5–27

5–15 Removing the Top Cover ....................... 5–28

5–16 Removing the Bottom Cover .................... 5–30

5–17 Removing the Control Panel Bezel . ............... 5–32

5–18 Removing the Control Panel Module .............. 5–34

5–19 Battery and XTC Connections ................... 5–36

5–20 AC Front End Tray ........................... 5–37

5–21 Power Supply Top Connectors ................... 5–39

5–22 Power Supply Top Interconnect Diagram........... 5–40

5–23 Removing the AC Front End Trays ............... 5–41

5–24 +5 Vdc Regulator Trays ....................... 5–43

5–25 Removing a Power Supply Tray . . . ............... 5–46

5–26 Sequencer and Auxiliary DC Voltage Regulator

Tray....................................... 5–48

5–27 3.3 Vdc/-5.2 Vdc Regulator Tray. . . ............... 5–50

5–28 Removing the Fan Assembly .................... 5–53

5–29 Airflow Sensors on Rear of Card Cage ............. 5–55

5–30 Removing the AC Input Assembly . ............... 5–58

A–1 Top Front View of Card Cage Slot Designations ...... A–3

A–2 Bottom View of Card Cage Slot Designations. . ...... A–5

A–3 2T-CIXCD-RA Option Kit Contents ............... A–6

vi

A–4 Installing the 2T-CIXCD-RA Connectors and

Jumper..................................... A–9

Tables

1–1 Card Cage Modules ........................... 1–4

1–2 LSB Control Panel Push-button Switches .......... 1–6

1–3 LSB Control Panel Status LED Indicators .......... 1–6

1–4 XMI Options and Cabinet Kits ................... 1–9

1–5 Control Panel Keyswitches ...................... 1–11

1–6 Restart Switch ............................... 1–12

1–7 XMI Control Panel Status LED Indicators .......... 1–12

1–8 XMI Power Supply Tray Assemblies .............. 1–14

1–9 LSB Chassis Specifications ..................... 1–17

1–10 XMI Chassis Specifications ..................... 1–18

4–1 LSB Chassis Troubleshooting ................... 4–2

4–2 XMI Chassis Troubleshooting ................... 4–3

B–1 LSB Chassis Field Replaceable Units ............. B–1

B–2 XMI Chassis Field Replaceable Units ............. B–2

vii

Preface

The Rackmount DEC 7000 AXP and VAX 7000 Systems Installation/Owner’s
Guide provides information to properly trained Digital service personnel and

customer maintenance personnel on the installation of the rackmount DEC 7000
AXP and VAX 7000 systems, and information on the operation and maintenance
of the equipment.

Organization

The Rackmount DEC 7000 AXP and VAX 7000 Systems Installation/Owner’s
Guide is organized in the following manner:

• Chapter 1, Introduction – Provides an overview of the rackmount DEC
7000 AXP and VAX 7000 systems, and describes the major chassis, control
panels, and power supply trays that make up this system. Specifications
for the LSB (BA700-AA) chassis and the XMI (BA601-AC) chassis are also
included.

• Chapter 2, Installation – Discusses site preparation, environmental and
electrical requirements, checking the shipment, installing the LSB and XMI
chassis, and cabling the two chassis that make up the system.

• Chapter 3, Operation – Describes how to turn on and turn off the
equipment.

• Chapter 4, Troubleshooting – Describes the performance of various steps
in basic troubleshooting and routine maintenance procedures.

• Chapter 5, Removal and Replacement – Describes the removal and
replacement procedures for the field replaceable units (FRUs) that are unique
to the rackmount DEC 7000 AXP and VAX 7000 systems.

• Appendix A, Field Replaceable Units – Lists all FRUs and their part
numbers for the LSB and XMI chassis.

ix

• Appendix B, Option Installation – Contains installation instructions for
the options that are available for the rackmount DEC 7000 AXP and VAX
7000 systems.

Conventions

The following conventions are used in this document:

NOTE A note calls the reader’s attention to any item of information that may

CAUTION A caution contains information essential to avoid damage to the

WARNING A warning contains information essential to the safety of personnel.

be of special importance.

equipment.

The following symbols appear on the chassis. Please review their definitions
below:

This Dangerous Voltage warning symbol indicates risk of electric
shock and indicates hazards from dangerous voltage.

This Attention symbol is used to alert the reader about specific
safety conditions, and to instruct the reader to read separate
instructional material.

x

Related Documentation

For more information on the rackmount DEC 7000 AXP and VAX 7000 systems,
refer to the following documentation:

DEC 7000 AXP System/VAX 7000 Installation Guide EK-700EB-IN
DEC 7000 AXP System/VAX 7000 Site Preparation Guide EK-7000B-SP
DEC 7000 AXP System/VAX 7000 Operations Manual EK-7000B-OP
DEC 7000 AXP System/VAX 7000 Basic Troubleshooting EK-7000B-TS
DEC 7000 AXP System/VAX 7000 Platform Service Manual EK-7000A-SV
DEC 7000 AXP System/VAX 7000 System Service Manual EK-7002B-SV
DEC 7000 AXP System Pocket Service Guide EK-7700A-PG
VAX 7000 Pocket Service Guide EK-7000A-PG
DEC 7000 AXP System Advanced Troubleshooting EK-7701A-TS
VAX 7000 Advanced Troubleshooting EK-7001A-TS
DEC 7000 AXP System/VAX 7000 Console Reference Manual EK-70C0B-TM
KA7AA CPU Technical Manual EK-KA7AA-TM
KN7AA CPU Technical Manual EK-KN7AA-TM
MS7AA Memory Technical Manual EK-MS7AA-TM
I/O System Technical Manual EK-70I0A-TM
Platform Technical Manual EK-7000A-TM

xi

1

Introduction

1.1 General

The rackmount DEC 7000 AXP and VAX 7000 systems (see Figure 1–1) consist
of two or more interlocked rackmountable chassis that attach to the rails within
a 36-inch deep RETMA cabinet. The laser system bus (LSB) chassis (BA700­AA) contains the CPU and memory boards, along with an I/O port controller
(IOP) that multiplexes to support up to four XMI I/O chassis. The LSB chassis
includes a 48 Vdc power supply and a blower assembly to move the cooling air.
In addition, the chassis has its own circuit breaker and power cord that requires
a single-phase, 200-240 Vac (nominal), 50-60 Hz power source. The LSB chassis
has a power status indicator as part of the operator control panel.

The extended memory interface (XMI) chassis (BA601-AC) mounts above the
LSB chassis in the cabinet and can accept up to 12 XMI technology I/O modules.
Other rackmountable I/O chassis for modules using different I/O bus types may be
added to this product family in the future. The XMI chassis also accommodates
up to five quad and three dual I/O panels. The XMI chassis includes six power
supply modules and fans for moving the cooling air. The XMI chassis has its
own circuit breaker and power cord that requires a single-phase, 200-240 Vac
(nominal), 50-60 Hz power source. The XMI chassis also has a power status
indicator as part of the control panel.

In an H9702 cabinet, a power controller is mounted behind each LSB chassis
to allow the connection of both chassis to an external source of 200-240 Vac
(nominal), and also to sequence the power application and removal to this system.

The LSB and XMI chassis are interconnected with a flat ribbon cable between the
I/O port controller (IOP) in the LSB chassis and the XMI backplane in the XMI
chassis.

Introduction 1–1

Introduction

Figure 1–1 Two DEC 7000 AXP and VAX 7000 Systems in an H9702 Cabinet

MK−2339−01

1–2 Introduction

Introduction

1.2 Laser System Bus (BA700-AA) Chassis

The LSB (BA700-AA) chassis, shown in Figure 1–2, contains a card cage, a 48
Vdc power supply, a control panel, and a blower assembly.

The following sections describe the basic components of the LSB chassis.

Figure 1–2 LSB (BA700-AA) Chassis with Covers Removed

Blower Assembly

Card Cage

IOP Module

Control Panel

48 Vdc Power Supply

MK−2339−02

Introduction 1–3

Introduction

1.2.1 LSB Chassis Card Cage

The LSB chassis card cage contains five slots. One slot is reserved for the I/O
port controller (IOP) module and the other four slots are available for either CPU
or memory modules. The system must have at least an IOP module, one CPU
module, and one memory module in order to function.

Rackmount DEC 7000 AXP and VAX 7000 systems can range from a single CPU
with three memory modules to three CPUs with a single memory module.

Table 1–1 contains a list of the different types of modules that can be installed in
the rackmount DEC 7000 AXP and VAX 7000 systems, and a description of each.

Table 1–1 Card Cage Modules

Option No. Part No. Description

IOP E2044-AA I/O port controller module
KN7AA E2040-AA DEC 7000 AXP CPU module
KA7AA E2045-AA VAX 7000 CPU module
MS7AA-AA E2043-AA 64-MB memory module
MS7AA-BA E2043-BA 128-MB memory module
MS7AA-CA E2043-CA 256-MB memory module
MS7AA-DA E2046-AA 512-MB memory module

1–4 Introduction

Introduction

1.2.2 LSB Chassis Control Panel

The rackmount DEC 7000 AXP and VAX 7000 systems have a control panel
located on the front of the LSB chassis (see Figure 1–3). The LSB chassis control
panel consists of three push-button switches with integral LED indicators and
three separate LED indicators.

Figure 1–3 LSB Chassis Control Panel

Power

Run

Fault

On/Off Secure Restart

MK−2339−03

Introduction 1–5

Introduction

Table 1–2 lists the three push-button switches and describes their functions.

Table 1–2 LSB Control Panel Push-button Switches

Switch Position

On/Off Out Off The 48 Vdc power supply is turned off.

In On (Green) The 48 Vdc power supply is turned on and

Secure Out Off Indicates to the console firmware that

In On (Green) Indicates to the console firmware that

Restart
(Momentary
switch)

Out Off The system restart signal is not being

In On (Red) The system restart signal is being asserted.

The LSB control panel also includes three status LED indicators. Table 1–3 lists
these LEDs and describes their functions.

LED Status
/Color Description

48 Vdc is present.

certain privileged console commands are
allowed.

certain privileged console commands are not
allowed.

asserted.

Table 1–3 LSB Control Panel Status LED Indicators

LED Name/Color Function

Power
(Green)

Run
(Green)

Fault
(Amber)

1–6 Introduction

Lit when the 48 Vdc power supply is on and the output is within
specifications.

If not lit after the On/Off switch is depressed, the power supply has
detected an overvoltage or overcurrent condition.

Lit when console mode is terminated and system program execution
begins.

Not lit during power sequencing and when in console mode.
Blinks at a slow 2-second rate during the power-up sequence and

at a fast .5-second rate during the power-down sequence. After the
power-up sequence, it stays lit until all LSB and I/O modules have
passed self-test, and then goes out.

Being lit during normal operation indicates a blower failure, an
LSB or I/O module not passing self-test, or a power supply fault.

Introduction

1.2.3 LSB Chassis Power Supply

A 48 Vdc power supply is located on the left side of the LSB chassis. This power
supply provides 48 Vdc to the control panel, the LSB backplane, and the chassis
blower.

Introduction 1–7

Introduction

1.3 Extended Memory Interface (BA601-AC) Chassis

The XMI (BA601-AC) chassis, shown in Figure 1–4, includes a control panel, a
single 14-slot card cage, a power supply consisting of 6 tray assemblies, 2 fans,
and an I/O bulkhead. The front panel of the XMI chassis also contains an area
for installing either an RRD42 CD-ROM reader (DEC 7000 AXP only) or a TF85
tape drive (VAX 7000 only). The rear of the chassis contains an interface area for
connecting external cables.

The following sections describe the basic components of the XMI chassis.

Figure 1–4 XMI (BA601-AC) Chassis with Top Cover Removed

Fans

Power Supply

Card Cage

Space for TF85

or RRD42

1–8 Introduction

Control Panel

MK−2339−04

Introduction

1.3.1 XMI Chassis Card Cage

The XMI chassis incorporates a 14-slot card cage that houses the two LSB I/O
interface cards and up to 12 I/O modules. The XMI device adapter boards are
housed in this card cage. Other modules are available for installation in the XMI
bus, such as: disk controllers, network interfaces, and bus adapters. Table 1–4
lists the options and cabinet kits that are available for installation in the XMI
chassis.

Table 1–4 XMI Options and Cabinet Kits

Interface Option BA601 Cabinet Kit I/O Panel

Ethernet DEMNA-M CK-DEMNA-RA 1 Dual
FDDI 2T-DEMFA-RA Included in option 1 Quad
DSA KDM70-AA CK-KDM60-RA 2 Quad
DSSI KFMSA-BA
SCSI KZMSA-AB
CI 2T-CIXCD-RA Included in option 1 Quad

1

For the VAX 7000 only.

2

For the DEC 7000 AXP only.

1

2

CK-KFMSA-RB 1 Quad
CK-KZMSA-RB 1 Dual

Introduction 1–9

Introduction

1.3.2 XMI Chassis Control Panel

The rackmount DEC 7000 AXP and VAX 7000 systems have a secondary control
panel located on the front of the XMI chassis (see Figure 1–5). The control panel
incorporates three switches and nine LEDs.

Figure 1–5 XMI Chassis Control Panel

Status LED
Indicators

O

Upper Keyswitch

EEPROM

Lower Keyswitch

2

1

Restart Switch

MK−2339−05

The XMI chassis control panel incorporates two rotary switches (an upper
keyswitch and a lower keyswitch) and a push-button restart switch. Table 1–5
lists the upper and lower keyswitches and describes their functions. Table 1–6
describes the functions of the restart switch.

1–10 Introduction

Table 1–5 Control Panel Keyswitches

Symbol Position

Light/
Color Effect

Upper Keyswitch

Introduction

O (Off) No Light Power to system bus is removed, but ac

power and 12 Vdc power is still on.

Standby Red Not used.

Enable Yellow Not used.

1

Secure

Green Indicates that power is applied to the

entire system. Used for normal operation.
Disables restart switch.

Lower Keyswitch

Update Red Not used.

Halt Yellow Not used.

Auto Start Green Not used.

1

Normal position

Introduction 1–11

Introduction

Table 1–6 Restart Switch

Upper Keyswitch Lower Keyswitch Restart Switch Function

Enable Update or Halt Runs self-test, then halts.
Enable Auto Start Runs self-test, then reboots the operating

Standby or "O" OFF Any position Does not function.

The XMI control panel also includes three status LED indicators. Table 1–7 lists
these LEDs and describes their functions.

Table 1–7 XMI Control Panel Status LED Indicators

Symbol Name State/Color Indication

system.

Run On (Green) System is executing operating system

Off System is either in console mode or is

Battery NA (Green) (This function is not implemented on

Fault On (Red) Self-test is in progress. If light does

Off Self-test has completed successfully, or

instructions on at least one processor.

turned off.

the rackmount DEC 7000 AXP and
VAX 7000 systems.)

not go off, system has a hardware
fault.

the system is turned off.

1–12 Introduction

Introduction

1.3.3 XMI Chassis Power Supply

The XMI power supply consists of six separate tray assemblies. The system
includes two ac-to-dc front end modules and four dc-to-dc regulator trays. The dc­to-dc regulator trays include a 5 Vdc regulator master, a 5 Vdc regulator booster,
a sequencer and auxiliary dc voltage regulator, and a 3.3 Vdc/-5.2 Vdc regulator.
Each of these trays contain field replaceable units (FRUs) that are described in
Chapter 5.

Table 1–8 lists the six power supply tray assemblies along with the description
and location of each. Figure 1–6 shows the location of these six power supply
assemblies.

Introduction 1–13

Introduction

Table 1–8 XMI Power Supply Tray Assemblies

Tray Assembly Description Location

ac-to-dc converters (2) Provides 300 Vdc to feed into regulators A + B

5 Vdc regulator +5 Vdc master supply A1

5 Vdc regulator +5 Vdc booster supply A2

1

Sequencer and auxiliary dc
voltage regulator

Consists of:

• Power sequencing logic

• +12 Vdc supply

• -12 Vdc supply

• +24 Vdc supply (fans)

• -2 Vdc supply

3.3 Vdc/-5.2 Vdc regulator Consists of:

• +3.3 Vdc supply (not used for the
rackmount DEC 7000 AXP and VAX
7000 systems)

• -5.2 Vdc supply

1

See Figure 1–6

B1

B2

1–14 Introduction

Introduction

Figure 1–6 Power Supply Tray Assemblies (XMI Chassis Bottom View)

Front

B2 B1 A2 A1 B A

Power Supply Tray Assemblies

MK−2339−06

Introduction 1–15

Introduction

1.3.4 XMI Chassis I/O Bulkhead

The XMI chassis has an I/O bulkhead (see Figure 1–7) located at the rear of the
chassis. The I/O bulkhead is used for installing the I/O panels associated with
the different I/O option cards that can be installed in the XMI card cage. The I/O
bulkhead can accommodate five quad and three dual I/O panels. This allows the
rackmount DEC 7000 AXP and VAX 7000 systems to be connected to external
devices.

Figure 1–7 I/O Bulkhead

1–16 Introduction

MK−2339−07

Introduction

1.4 Specifications

The following sections contain the physical, electrical, and environmental
specifications for the LSB (BA700-AA) chassis and the XMI (BA601-AC) chassis.

1.4.1 LSB Chassis Specifications

Table 1–9 lists the LSB chassis specifications.

Table 1–9 LSB Chassis Specifications

Physical Characteristics

Enclosure Bezel height 48.9 cm (19.25 in.)

Total height including
left-side hanger

Width 48.26 cm (19 in.)
Depth 78.74 cm (31 in.)
Weight 45 kg (100 lb)

Electrical Requirements

53.34 cm (21 in.)

maximum

AC Input Voltage 200-240 Vrms nominal

single phase
AC Input Current 10 Arms
Line Frequency 50 Hz or 60 Hz nominal
Mating Receptacle NEMA 6-15R

Environmental Requirements

Operating Temperature 15°C to 28°C (59°F to 82°F)
Relative Humidity 20% to 80% noncondensing

Storage Temperature -40°C to 66°C (-40°F to 151°F)
Relative Humidity 10% to 95% noncondensing

Introduction 1–17

Introduction

1.4.2 XMI Chassis Specifications

Table 1–10 lists the XMI chassis specifications.

Table 1–10 XMI Chassis Specifications

Physical Characteristics

Enclosure Height 40.0 cm (15.75 in.)

Width 48.26 cm (19 in.)

Depth 91.44 cm (36 in.)

Weight 55 kg (121 lb) maximum

Electrical Requirements

AC Input Voltage 200-240 Vrms nominal

AC Input Current 6 Arms
Line Frequency 50 Hz or 60 Hz nominal
Mating Receptacle NEMA L6-15R

Environmental Requirements

Operating Temperature 15°C to 28°C (59°F to 82°F)
Relative Humidity 20% to 80% noncondensing

Storage Temperature -40°C to 66°C (-40°F to 151°F)
Relative Humidity 10% to 95% noncondensing

single phase

1–18 Introduction

2

Installation

2.1 Introduction

This chapter discusses the installation of the rackmount DEC 7000 AXP and VAX
7000 systems. Topics covered in this chapter include:

• Site preparation

• Checking the shipment

• Installing the LSB (BA700-AA) chassis

• Installing the XMI (BA601-AC) chassis

• Cabling

• Connecting the power cords

Installation 2–1

Installation

2.2 Site Preparation

The following sections describe the environmental and electrical requirements for
the rackmount DEC 7000 AXP and VAX 7000 systems.

2.2.1 Environmental Requirements

The following list contains the environmental requirements for the rackmount
DEC 7000 AXP and VAX 7000 systems:

• Keep the environment between 15°C and 28°C (59°F and 82°F).

• Keep the environment between 20% and 80% relative humidity (noncondens-

ing).

• Keep the air around the equipment well circulated to prevent heat from

building up and to provide an exhaust space at the rear of the cabinet.

• Keep the equipment away from heaters, photocopiers, and direct sunlight.

• Provide 1.5 m (4.9 ft) front and rear clearance for service access.

• Decrease static electricity buildup by locating the equipment away from busy

areas such as office corridors, and keep the environment at the recommended
humidity levels. Static electricity can cause the equipment to fail, data to be
lost, and other problems to occur.

• Keep the area where the equipment is located clean. Do not place food or

liquids on or near the equipment.

• Keep the area where the equipment is located free from dust (dust particles

can interfere with chassis cooling and can damage the hardware).

2.2.2 Electrical Requirements

A dedicated 30-ampere (200-240 Vac nominal) 3-wire branch circuit for a power
controller is required for each LSB and XMI chassis pair. The circuit must meet
national and local standards, provide a good system ground, be stable, and be
free from electrical noise. If power disturbances cannot be prevented, add power­conditioning equipment. Consult with Multivendor Customer Service personnel
about the electrical requirements for the rackmount DEC 7000 AXP and VAX
7000 systems.

The ac power source should allow for system expansion. Do not connect other
equipment (such as air conditioners or office copiers) to the circuit dedicated to
the rackmount DEC 7000 AXP and VAX 7000 systems.

2–2 Installation

Installation

2.3 Checking the Shipment

The rackmount DEC 7000 AXP and VAX 7000 system hardware shipment
consists of two cartons when not factory installed in a cabinet. One carton
contains the LSB (BA700-AA) chassis and the other carton contains the XMI
(BA601-AC) chassis.

Check the shipment to verify that all items shown in Figure 2–1, and listed on
the packing slip, have been received. Optional items are not shown.

WARNING

The LSB chassis weighs approximately 45 kg (100 lb) and the
XMI chassis weighs approximately 55 kg (121 lb). Use sufficient
personnel, or proper lifting equipment, when lifting or moving
these chassis.

If the equipment is damaged or if any items are missing, notify the delivery agent
and contact the Digital sales representative.

Save all shipping cartons in case the equipment needs to be moved to a new
location, or needs to be returned for repair.

Installation 2–3

Installation

Figure 2–1 Contents of Shipping Cartons

XMI Chassis

Equipment
Mounting
Slides

e

Rackmount DEC 7000 AXP
and VAX 7000 Systems
Installation/Owner’s Manual

Rackmount DEC 7000 AXP
and VAX 7000 Systems
Installation/Owner’s Manual

LSB Chassis

Equipment
Mounting
Slides

I/O Cable

DEC Power Bus Cable

Power Cord

Console Cable

MK−2339−08

2–4 Installation

Installation

2.4 Installing the LSB Chassis

The following sections discuss the installation of the LSB (BA700-AA) chassis in
a standard RETMA 48.26 cm (19 in.) wide equipment cabinet such as Digital’s
H9702 cabinet. The LSB chassis is installed in the bottom space of the equipment
cabinet. The LSB chassis and the XMI chassis together occupy 88.9 vertical
centimeters (35 vertical inches) of space in the equipment cabinet. Open the rear
door of the cabinet before installing the chassis.

WARNING

Before attempting to install the equipment into a cabinet or rack,
ensure that the cabinet is stable and that all provided stabilizing
features have been activated. The stabilizing features for the rack
or cabinet are configuration dependent.

The following tools are required for installing the LSB and XMI chassis:

• Medium Phillips screwdriver

• Small Phillips screwdriver

• Small flat-blade screwdriver

• Adjustable wrench

Installation 2–5

Installation

2.4.1 Installing the LSB Chassis Slides

Each chassis is shipped with a pair of RETMA chassis slides (see Figure 2–1 and
Figure 2–2). There is a right and left slide.

Figure 2–2 LSB Chassis Equipment Mounting Slides

Right Slide

Left Slide

Bag of Hardware
and Bar Nuts

2–6 Installation

MK−2339−09

Installation

To install the slides, perform the steps in the following procedure:

1. Check each slide for any damage and for smooth operation.

2. Loosen the two screws that secure the rear slide bracket to the slide so that it

can be adjusted to fit between the front and central rails.

3. Identify the LSB chassis location in the rack and establish a datum line. The

datum line serves as a reference to identify the mounting hole positions for
the slide brackets and U-nuts. To establish a datum line:

a. Determine the area of the rack where the LSB chassis will be installed.

The LSB chassis is normally installed in the bottom space of an
equipment cabinet and requires 48.9 cm (19.25 in.) of height, or 33
contiguous holes (35 holes on the left rail with overlap into the XMI
space).

b. Refer to Figure 2–3 and establish a datum line at the base of the area

between two holes with 1.3 cm (.5 in.) spacing. The first hole above the
datum line is identified as hole 1. This establishes the location of the
bottom edge of the LSB chassis.

4. Install the slides between the front and central vertical mounting rails from

the front of the cabinet as follows:
a. Determine the proper mounting holes for the slide brackets using the

four-hole pattern in the bar nut. This pattern repeats every 4.45 cm (1.75
in.) along the rails. The proper four-hole pattern for the right slide on
the front and central rails is the 2nd, 3rd, 4th, and 5th holes up from the
datum line (see Figure 2–3).

The proper four-hole pattern for the left slide on the front and central
rails is the 32nd, 33rd, 34th, and 35th holes up from the datum line (see
Figure 2–3).

b. Position a bar nut for each slide bracket in the correct position on the

inside of the front and central RETMA rails and start the two middle
screws (the 3rd and 4th holes up from the datum line for the right slide
and the 33rd and 34th holes up from the datum line for the left slide),
then slide the front and back slide support bracket on the inside of the
rails between the bar nut and the rail (see Figure 2–4).

Installation 2–7

Installation

Figure 2–3 LSB Chassis Slide Mounting Pattern

Left Slide
Bracket

Bar Nuts

Datum Line

9
8
7
6

35
34
33
32

29
28
27
26

27

U−Nuts

8

5
4
3
2

Omit This Screw
In Front Rail Only

Right Slide
Bracket

2–8 Installation

MK−2339−10

Installation

Figure 2–4 Installing the Equipment Mounting Slides (Rear View of Left Slide

with Slide Extended)

Bar Nut
Positioned
Behind Bracket

MK233911

c. Install the other two screws in the top and bottom holes of each slide

support bracket at each end of the slide.

NOTE

Do not install a screw in the top hole (hole 5) of the right front
slide support bracket. This hole must be left open to allow room
for the clip that secures the front bezel to the chassis.

d. Tighten all eight screws (seven on the right slide) to secure each slide.

NOTE

Pull the slide upward when securing it to the rails. Also, ensure
that the slide is level.

5. Tighten the two screws that secure the rear slide bracket to the slide.

6. Install two U-nuts on the right front rail over the 8th and 27th holes up from

the datum line by sliding them over the edge of the rail and aligning them
with the holes (see Figure 2–3). These are used for securing the LSB chassis,
in the closed position, to the rail.

Installation 2–9

Installation

7. Install a bar nut on the left front rail behind the 26th, 27th, 28th, and 29th

holes up from the datum line by aligning them with the holes and installing
screws in the 26th and 28th holes up from the datum line (see Figure 2–3).
These are used for securing the LSB chassis, in the closed position, to the
rail.

8. Install a bar nut on the left front rail behind the 6th, 7th, 8th, and 9th holes

up from the datum line by aligning them with the holes and installing screws
in the 6th and 9th holes up from the datum line (see Figure 2–3). These are
used for securing the LSB chassis, in the closed position, to the rail.

2–10 Installation

Installation

2.4.2 Installing the LSB Chassis on the Slides

To install the LSB (BA700-AA) chassis on the slides, perform the steps in the
following procedure:

1. Extend the stabilizing legs at the front of the cabinet (if stabilizing legs are

provided).

WARNING

Before attempting to install the equipment into a cabinet or rack,
ensure that the cabinet is stable and that all provided stabilizing
features have been activated. The stabilizing features for the rack
or cabinet are configuration dependent.

2. Extend both of the equipment slides from the cabinet. The slide locking levers

lock automatically when the slides are fully extended.

WARNING

The LSB (BA700-AA) chassis weighs approximately 45 kg (100 lb).
Use sufficient personnel, or proper lifting equipment, when lifting
or moving this chassis.

3. Remove the front bezel from the LSB chassis by grasping both sides of the

bezel and pulling straight out.

4. Lift the LSB chassis until the chassis mounting plates are just above the

slides, and then move the chassis back and onto the equipment slides.

5. Carefully position the chassis until the four mounting holes in the side of

the chassis line up with the four mounting holes in the side of the slide (see
Figure 2–5).

6. Secure the LSB chassis to the slides by installing four screws for each slide,

supplied with the hardware kit, through the slides and into the chassis
mounting holes (see Figure 2–5).

Installation 2–11

Installation

Figure 2–5 Installing the LSB Chassis on the Slides

7. Release the slide locking levers on both slides and carefully slide the LSB

chassis into the cabinet. Ensure that the chassis is level, can clear all other
equipment in the cabinet, and that the slides operate smoothly.

8. Secure the chassis to the equipment rails by tightening the four screws into

the bar nuts and U-nuts that were placed on the front RETMA rails during
installation of the slides.

9. Replace the front bezel on the LSB chassis by grasping both sides of the bezel

and pushing it onto the front of the chassis.

2–12 Installation

Chassis
Mounting
Holes

MK−2339−12

Installation

2.5 Installing the XMI Chassis

The following sections discuss the installation of the XMI (BA601-AC) chassis in
a standard RETMA 48.26 cm (19 in.) wide equipment cabinet such as Digital’s
H9702 cabinet. The first XMI chassis is installed in the space above the LSB
chassis. Any other XMI chassis that are to be installed should be installed in
the space above the previously installed XMI chassis. Open the rear door of the
cabinet before installing the chassis.

WARNING

Before attempting to install the equipment into a cabinet or rack,
ensure that the cabinet is stable and that all provided stabilizing
features have been activated. The stabilizing features for the rack
or cabinet are configuration dependent.

Installation 2–13

Installation

2.5.1 Installing the XMI Chassis Slides

Each chassis is shipped with a pair of RETMA chassis slides (see Figure 2–1 and
Figure 2–6). There is a right and left slide.

Figure 2–6 XMI Chassis Equipment Mounting Slides

2–14 Installation

MK−2339−13

Installation

To install the slides, perform the steps in the following procedure:

1. Check each slide for any damage and for smooth operation.

2. Loosen the two screws that secure the rear slide bracket to the slide so that it

can be adjusted to fit between the front and central rails.

3. Identify the XMI chassis location in the rack and establish a datum line. The

datum line serves as a reference to identify the mounting hole positions for
the slide brackets and U-nuts. To establish a datum line:

a. Determine the area of the rack where the XMI chassis will be installed.

The first XMI chassis is installed in the space of an equipment cabinet
located just above the LSB chassis and requires 40 cm (15.75 in.) of
height, or 27 contiguous holes. Any additional XMI chassis that are to be
added are installed in the space above a previously installed XMI chassis.

b. Refer to Figure 2–7 and establish a datum line at the base of the area

between two holes with 1.3 cm (.5 in.) spacing. The first hole above the
datum line is identified as hole 1. This establishes the location of the
bottom edge of the XMI chassis.

4. Install the slides between the front and central vertical mounting rails from

the front of the cabinet as follows:
a. Determine the proper mounting holes for the slide brackets using the

four-hole pattern in the bar nut. This pattern repeats every 4.45 cm (1.75
in.) along the rails. The proper four-hole pattern for the slide on the
front and central rails is the 11th, 12th, 13th, and 14th holes up from the
datum line (see Figure 2–7).

b. Position each bar nut in the correct position on the inside of the front and

central RETMA rails and start the two middle screws (the 12th and 13th
holes up from the datum line), then slide the front and back slide support
bracket between the rail and the screw heads (see Figure 2–8).

c. Install the other two screws in the top and bottom holes of each slide

support bracket at each end of the slide.

d. Tighten all eight screws to secure each slide.

NOTE

Pull the slide upward when securing it to the rails. Also, ensure
that the slide is level and that the slides are at the same height
within the cabinet.

Installation 2–15

Installation

Figure 2–7 XMI Chassis Slide Mounting Pattern

Left Slide
Bracket

Datum Line

26

26

U−Nuts

14
13
12
11

U−Nuts

5

14
13
12
11

Right Slide
Bracket

5

MK−2339−14

5. Tighten the two screws that secure the rear slide bracket to the slide.

6. Repeat steps 1 through 5 for the other slide.

7. Install two U-nuts on each front rail over the 5th and 26th holes up from the

datum line by sliding them over the edge of the rail and aligning them with
the holes (see Figure 2–7). These are used for securing the XMI chassis, in
the closed position, to the rails.

2–16 Installation

Installation

Figure 2–8 Installing the Equipment Mounting Slides (Rear View of Left Slide

with Slide Extended)

Bar Nut
Positioned
Behind Rail

MK233915

Installation 2–17

Installation

2.5.2 Installing the XMI Chassis on the Slides

To install the XMI (BA601-AC) chassis on the slides, perform the steps in the
following procedure:

1. Extend the stabilizing legs at the front of the cabinet (if stabilizing legs are

provided).

WARNING

Before attempting to install the equipment into a cabinet or rack,
ensure that the cabinet is stable and that all provided stabilizing
features have been activated. The stabilizing features for the rack
or cabinet are configuration dependent.

2. Extend both of the equipment slides from the cabinet. The slide locking levers

lock automatically when the slides are fully extended.

WARNING

The XMI (BA601-AC) chassis weighs approximately 55 kg (121 lb).
Use sufficient personnel, or proper lifting equipment, when lifting
or moving this chassis.

3. Remove the front bezel from the XMI chassis by grasping both sides of the

bezel and pulling straight out.

4. Lift the XMI chassis onto the equipment slides and carefully position the

chassis mounting plate over the three mounting holes in the slide (see
Figure 2–9).

5. Secure the XMI chassis to both slides by installing three 8-32 screws through

the chassis mounting plates and into the equipment slides (see Figure 2–9).

6. Release the slide locking levers on both slides and carefully slide the XMI

chassis into the cabinet. Ensure that the chassis is level, can clear all other
equipment in the cabinet, and that the slides operate smoothly.

7. Secure the chassis to the equipment rails by tightening the four screws into

the U-nuts that were placed on the front RETMA rails during installation of
the slides.

2–18 Installation

Installation

8. Replace the front bezel on the XMI chassis by grasping both sides of the bezel

and pushing it onto the front of the chassis.

Figure 2–9 Installing the XMI Chassis on the Slides

Mounting
Screws

MK−2339−16

Installation 2–19

Installation

2.6 Cabling

The following sections contain the procedures for connecting the I/O cable(s), the
DEC power bus cable, and the console cable. These cable connections must be
performed in the sequence presented in the following sections.

2.6.1 Connecting the I/O Cable (PN 17-03085-02)

Use the following procedure to connect the I/O cable from the IOP module in the
LSB chassis to the I/O bulkhead connector on the XMI chassis.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Remove the cover plate and connect the LSB end of the I/O cable to the

rear most available connector of the four connectors on the IOP module, and
alternately tighten the two slotted captive screws to secure it in place (see
Figure 2–10).

3. Replace the cover plate over any unused IOP connectors.

4. Route the I/O cable toward the rear of the LSB chassis.

5. Open the rear door on the equipment cabinet.

6. Connect the other end of the I/O cable to the I/O connector on the rear

bulkhead of the XMI chassis, and tighten the two slotted captive screws to
secure it in place (see Figure 2–11).

2–20 Installation

Figure 2–10 Connecting the I/O Cable to the IOP Module

Front

LSB

IOP Module

Top Cover

Installation

To XMI Chassis

MK−2339−17

Installation 2–21

Installation

Figure 2–11 Connecting the I/O Cable to the XMI Bulkhead Connector

MK−2339−18

2–22 Installation

Installation

2.6.2 Connecting the DEC Power Bus Cable (PN 70-31534-01)

Use the following procedure to connect the DEC power bus cable from the LSB
chassis to a power sequencing power controller similar to Digital’s model 877-E
that is included in an H9702-FB cabinet.

1. Connect one end of the DEC power bus cable to the power bus connector

located behind the top left edge of the LSB front panel (see Figure 2–12).

Figure 2–12 DEC Power Bus and Console Cable Connectors

Console
Connector

Front

DEC Power Bus
Connector

Console Cable
Ground Stud

MK−2339−19

2. Route the DEC power bus cable toward the rear of the LSB chassis.

3. Open the rear door on the equipment cabinet.

4. Connect the other end of the DEC power bus cable to the power controller

that is mounted on the rear cabinet rails behind the LSB chassis.

Installation 2–23

Installation

2.6.3 Connecting the Console Cable (PN 17-01364-02)

Use the following procedure to connect the console cable from the LSB chassis to
the console terminal.

1. Connect one end of the console cable to the console connector located behind

the top left edge of the LSB front panel, and connect the ground wire to the
ground stud (see Figure 2–12).

2. Route the console cable toward the rear of the LSB chassis.

3. Open the rear door on the equipment cabinet.

4. Route the console cable through the cable entrance/exit area of the equipment

cabinet.

5. Connect the other end of the console cable to the console terminal.

6. Release the slide locking levers on both slides and carefully slide the LSB

chassis into the cabinet.

7. Secure the LSB chassis to the equipment rails by tightening the four screws

and replacing the front bezels on the LSB and XMI chassis (see Section 5.2.2).

2–24 Installation

Installation

2.7 Connecting the Power Cords

The LSB chassis has a removable power cord and the XMI chassis has its own
permanently attached power cord. The LSB and the first XMI chassis in a cabinet
should connect to the same power controller. A second and third XMI chassis
should connect to a second power controller that is sequenced by the first power
controller.

The power controller is connected to an external source of 200-240 Vac (nominal),
single phase power.

2.7.1 LSB Chassis Power Cord (PN 17-00083-37)

Use the following procedure to connect the LSB chassis power cord:

1. Connect one end of the LSB power cord to the ac input jack on the rear of the

LSB chassis.

2. Connect the other end to an unswitched receptacle on the power controller.

2.7.2 XMI Chassis Power Cord

Use the following procedure to connect the permanently attached XMI chassis
power cord:

Connect the unattached end of the XMI power cord to one of the switched
receptacles on the power controller, using any adapters that are necessary.

Installation 2–25

3

Operation

Operation of the rackmount DEC 7000 AXP and VAX 7000 systems begins with
connecting the LSB chassis power cord to an unswitched receptacle on the power
controller, and connecting the DEC power bus cable from the LSB chassis to
the power controller. The XMI chassis power cord is connected to a switched
receptacle on the power controller. Place the circuit breakers on the rear of both
chassis to the ON position.

The system can now be turned off and on with the On/Off push-button switch on
the LSB chassis control panel.

WARNING

The only way to remove all power from a chassis is to place the
circuit breaker in the OFF position and disconnect the power
cord from the power controller.

Refer to Section 1.2.2 for the LSB chassis controls and indicators.
Refer to Section 1.3.2 for the XMI chassis controls and indicators.
For information on booting the system refer to the DEC 7000 AXP System/VAX

7000 Operations Manual (EK-7000B-OP).
Refer to the DEC 7000 AXP System/VAX 7000 Console Reference Manual

(EK-70C0B-TM) for information on the console user interface and the console
commands.

Operation 3–1

4

Troubleshooting

This chapter discusses basic troubleshooting and diagnostic testing information
and aids in troubleshooting the LSB and XMI chassis.

Troubleshooting 4–1

Troubleshooting

Table 4–1 lists indications of possible hardware problems that may occur in the
LSB chassis and the corrective action to take for each problem.

Table 4–1 LSB Chassis Troubleshooting

Indication Possible Cause Corrective Action

No LEDs light when
On/Off push button is
pushed in.

Fault LED goes out after
powerup, but no self-test
display

Fault LED fails to blink
during the power-up
sequence

Fault LED stays lit after
power-up self-test.

Power cord is not
plugged in.

Circuit breaker is not
on.

Cable between the
power supply and the
control panel module is
loose or not connected.

48 Vdc power supply is
out of tolerance or has
failed.

Control panel module
has failed.

Console terminal is not
powered up and online.

Console cable is not
properly connected
between the LSB chassis
and the console.

Improper baud rate. Set to the correct baud rate.
Blower has failed. Check the blower to see if it is

Blower status cable to
the control panel module
is loose or disconnected.

A memory module,
CPU module, or one of
the I/O modules in the
XMI chassis has failed
self-test.

Plug in the power cord.

Place the circuit breaker in the ON
position.

Check the cable between the
power supply and the control
panel module.

Replace the 48 Vdc power supply.

Replace the control panel module.

Power up the terminal and set
it online (at proper terminal
settings).

Check the console cable connec­tions on the LSB chassis and the
console.

rotating. If not, replace the blower.

Check the blower status cable
connection to the control panel
module.

Check the self-test display on
the console and replace the failed
module.

4–2 Troubleshooting

Troubleshooting

Table 4–2 lists indications of possible hardware problems that may occur in the
XMI chassis and the corrective action to take for each problem.

Table 4–2 XMI Chassis Troubleshooting

Indication Possible Cause Corrective Action

No LEDs light Power cord is not

No fans, unit shuts
down after one minute

Fans OK, but no LEDs
light

plugged in.
Circuit breaker is not

on.
Upper switch is not on. Place the upper control panel

On/Off push button is
not pushed in (On) on
the LSB chassis.

Power cord on the LSB
chassis is not plugged
in.

LSB chassis circuit
breaker is not on.

DEC power bus cable is
not properly connected
between the LSB chassis
and the power controller.

Fan cable is loose or not
connected.

No 24 Vdc. Check the cables. Replace the

Airflow problem. Check the position of the detector,

Cable connection
problem between XMI
backplane, XTC card,
and console panel.

Plug in the power cord.

Place the circuit breaker in the ON
position.

switch in the ENABLE or SECURE
position.

Press the On/Off push button in on
the LSB chassis.

Plug in the power cord.

Place the LSB chassis circuit
breaker in the ON position.

Check the DEC power bus cable
connections on the LSB chassis and
the power controller.

Check the fan cable or reconnect
the cable.

24 Vdc miniconverter (E2) on the
sequencer and auxiliary dc voltage
regulator tray, or replace the tray
itself.

or the fan operation itself.
Ensure that the connectors are on

securely.

(continued on next page)

Troubleshooting 4–3

Troubleshooting

Table 4–2 (Cont.) XMI Chassis Troubleshooting

Indication Possible Cause Corrective Action

Fault LED goes out, but
no self-test display

Module does not appear
on self-test results

Intermittent module
response

Front panel LEDs flash
on, and then remain
off when the system is
turned on

No -5.2 Vdc 3.3 Vdc/-5.2 Vdc tray is

Console terminal is not
powered up and online.

Front console switch,
S1, is in the SECURE
position.

Improper baud rate. Set to the correct baud rate.
Not all necessary

voltages are applied.
Loose cabling on the

backplane.
Firmware needs

updating.
Bad module. Replace the module.
Loose cabling on the

backplane.

Poor contact on the
module connectors.

+5 Vdc is not coming up. Replace the 5 Vdc master and/or 5

bad.

Power up the terminal and set
it online (at proper terminal
settings).

Place S1 in the ENABLE position.

Check the backplane for all the
necessary voltage supplies.

Check and secure all the cables on
the backplane.

Boot and run the LFU utility.

Check and secure all the cables
on the backplane and the I/O
bulkheads.

Clean the module connectors.

Vdc booster power regulator trays.

Replace the 3.3 Vdc/-5.2 Vdc
modules (E2, E4, E10) on the
regulator tray, or replace the tray
itself.

For information on the system procedure required when changing or adding
CPU modules, recovering from a corrupted EEPROM or FEPROM, and updating
firmware, refer to the DEC 7000 AXP System/VAX 7000 System Service Manual
(EK-7002B-SV).

For information on basic system troubleshooting; the power-up and system
reset self-test; how to get information on the hardware configuration; and how
to test the system, subsystem, or module/device, refer to the DEC 7000 AXP
System/VAX 7000 Basic Troubleshooting (EK-7000B-TS).

4–4 Troubleshooting

Troubleshooting

For more advanced self-test and diagnostic troubleshooting procedures, refer to
either the DEC 7000 AXP System Advanced Troubleshooting (EK-7701A-TS) or
VAX 7000 Advanced Troubleshooting (EK-7001A-TS) depending on the system.

Troubleshooting 4–5

5

Removal and Replacement

5.1 Introduction

This chapter contains the procedures for removing and replacing the components
that are unique in the rackmount DEC 7000 AXP and VAX 7000 systems LSB
(BA700-AA) and XMI (BA601-AC) chassis.

The following tools are required for servicing the LSB and XMI chassis:

• Medium Phillips screwdriver

• Small Phillips screwdriver

• Small flat blade screwdriver

• Adjustable wrench

• DVM meter and probes

WARNING

Before servicing either chassis, ensure that the circuit breakers
are in the OFF position at both the chassis and the power
controller.

Removal and Replacement 5–1

Removal and Replacement

5.2 LSB Chassis Components

The following sections contain the removal and replacement procedures for the
components that are unique to the LSB chassis in the rackmount DEC 7000 AXP
and VAX 7000 systems.

5.2.1 Front Bezel

Perform the following procedure to remove the front bezel from the LSB chassis:

1. Grasp the front bezel on each side.

2. Pull straight out until the bezel unsnaps from the catches (see Figure 5–1).
To replace the front bezel, push it onto the front of the chassis until it snaps into

place.

5–2 Removal and Replacement

Removal and Replacement

Figure 5–1 Removing the Front Bezel from the LSB Chassis

MK−2339−20

Removal and Replacement 5–3

Removal and Replacement

5.2.2 Extending the LSB Chassis for Service

WARNING

Before extending the LSB chassis for service, ensure that the
cabinet is stable and that all provided stabilizing features have
been activated. The stabilizing features for the rack or cabinet
are configuration dependent.

Perform the following procedure to extend the LSB chassis for service:

1. Extend the stabilizing legs at the front of the cabinet (if stabilizing legs are

provided).

2. Remove the LSB front bezel (see Section 5.2.1).

3. Remove the XMI front bezel (see Section 5.3.1).

WARNING

Failure to remove the XMI front bezel before extending the LSB
chassis will cause the XMI front bezel to fall and may result in
personal injury.

4. Remove the four retaining screws that secure the chassis to the front rails

(see Figure 5–2).

Check and ensure that all cables are free to follow the chassis
before extending the chassis.

5. Carefully pull the LSB chassis forward until the slides lock in the extended

position.

To secure the chassis in the cabinet, press in on the left and right slide locks and
reverse steps 1 through 5.

5–4 Removal and Replacement

CAUTION

Figure 5–2 Extending the LSB Chassis

Removal and Replacement

Chassis Retaining Screws

MK−2339−21

Removal and Replacement 5–5

Removal and Replacement

5.2.3 Top Cover

Perform the following procedure to remove the top cover:

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Loosen the two quarter-turn fasteners along the top front edge of the chassis

that secure the top cover (see Figure 5–3).

3. Lift up on the front edge of the top cover and pull forward until the tabs on

the back edge slide out of the retaining slots (see Figure 5–3).

To replace the top cover, slide the tabs on the back edge of the cover into the
retaining slots and tighten the two quarter-turn fasteners along the top front
edge of the chassis that secure the top cover.

5–6 Removal and Replacement

Figure 5–3 Removing the Top Cover

Top Cover

Quarter−Turn
Fasteners

Removal and Replacement

MK−2339−22

Removal and Replacement 5–7

Removal and Replacement

5.2.4 CPU and Memory Modules

Perform the following procedure to remove CPU or memory modules:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Remove the top cover (see Section 5.2.3).

3. Put on an antistatic wriststrap.

CAUTION

An antistatic wriststrap must be worn when handling any module
to prevent damage to the module.

4. On the module being removed, pull the two black restraining clips up and to

the left (see Figure 5–4 (1) ). The clips snap when they open.

5. Pull both levers up at the same time until they are perpendicular to the top of

the module (see Figure 5–4 (2) ). This frees the module from the backplane.

6. Holding the levers, pull up on the module until it is out far enough to be able

to hold it underneath as it is removed.

7. When the module is free of the card cage, place it on an ESD pad in a safe

area, or pack it in the box that the new module was shipped in.

To replace a CPU or memory module, align the tracks of the module with the
tracks in the card cage slot and reverse steps 1 through 7.

5–8 Removal and Replacement

Removal and Replacement

Figure 5–4 Removing the CPU and Memory Modules

1

2

MK−2339−23

Removal and Replacement 5–9

Removal and Replacement

5.2.5 I/O Port Controller (IOP) Module (E2044-AA)

Perform the following procedure to remove the I/O port controller module:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Put on an antistatic wriststrap.

CAUTION

An antistatic wriststrap must be worn when handling any module
to prevent damage to the module.

3. Loosen the slotted captive screws that secure the I/O cable(s) to the

connector(s) on the IOP module (see Figure 5–5) and disconnect the cable(s).

4. Alternately loosen the two screws that secure the IOP module in the chassis

until the module is free of the connector (see Figure 5–5). Do not loosen one
screw completely before loosening the other. This keeps the module from
binding in the card guides.

5. Slide the module from the card cage.
To replace the IOP module, align the tracks of the module with the tracks in the

card cage slot and reverse steps 1 through 5.

5–10 Removal and Replacement

Figure 5–5 Removing the IOP Module

Front

IOP Screw

LSB

Top Cover

I/O Cable
Screws

Removal and Replacement

IOP Screw

MK−2339−24

Removal and Replacement 5–11

Removal and Replacement

5.2.6 Left Side Cover

Perform the following procedure to remove the left side cover:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Remove the six screws that secure the left side cover to the chassis (see

Figure 5–6).

3. Pull the left side cover straight out until it clears the top and bottom lips of

the chassis (see Figure 5–6).

To replace the left side cover, place the cover back into position and install the six
screws that secure it in place.

5–12 Removal and Replacement

Figure 5–6 Removing the Left Side Cover

Card Cage

Side Cover Screws (6)

Removal and Replacement

Control Panel

MK−2339−25

Removal and Replacement 5–13

Removal and Replacement

5.2.7 48 Vdc Power Supply (PN 30-39348-02)

Perform the following procedure to remove the 48 Vdc power supply:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Remove the left side cover (see Section 5.2.6).

3. Disconnect the connectors from J1 and J4 on the power supply (see

Figure 5–7).

4. Use an adjustable wrench to remove the nuts from the POS and RTN

terminals on the power supply (see Figure 5–7).

5. Remove the wires from the POS and RTN terminals and ensure that they are

properly labeled for reconnection (see Figure 5–7).

6. Remove the wires from the cable clamps (see Figure 5–7).

7. Remove the nine screws that secure the power supply to the chassis and lift

the power supply out of the chassis (see Figure 5–7).

To replace the 48 Vdc power supply, reverse steps 1 through 7.

5–14 Removal and Replacement

Figure 5–7 Removing the 48 Vdc Power Supply

J1

J4

Cable Clamps

Grey Wire (RTN)

Yellow Wire (POS)

Removal and Replacement

MK−2339−26

Removal and Replacement 5–15

Removal and Replacement

5.2.8 Control Panel (PN 54-21719-01)

Perform the following procedure to remove the control panel:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

WARNING

Special instructions apply to extend the LSB chassis to prevent
personal injury (see Section 5.2.2).

1. Extend the LSB chassis for service (see Section 5.2.2).

2. Disconnect the DEC power bus cable and the console cable from the

connectors located behind the top left edge of the front panel (see Figure 5–8).

3. Use a wrench to remove the six nuts that secure the front panel to the LSB

chassis (see Figure 5–9).

5–16 Removal and Replacement

Removal and Replacement

Figure 5–8 DEC Power Bus and Console Cable Connectors

Front

Console
Connector

DEC Power Bus
Connector

Console Cable
Ground Stud

MK−2339−19

Removal and Replacement 5–17

Removal and Replacement

Figure 5–9 Removing the Front Panel

Front
Panel
Nuts (3)

Front
Panel
Nuts (3)

4. Pull the front panel straight out until it clears the posts, then swing the right

edge to the left to allow access to the connectors (see Figure 5–10).

The front panel must be supported while completing the
remaining steps.

5. Disconnect the two-conductor blower cable from the back of the control panel

(see Figure 5–10).

5–18 Removal and Replacement

MK−2339−27

CAUTION

Removal and Replacement

6. Remove the eight screws that secure the control panel to the front panel and

lay the front panel aside (see Figure 5–10).

7. Disconnect the 50-pin and 10-pin connectors from the control panel (see

Figure 5–10).

To replace the control panel, reverse steps 1 through 7.

Figure 5–10 Removing the Control Panel

50−Pin Connector

10−Pin Connector

Blower Cable

Control Panel
Screws (8)

MK−2339−28

Removal and Replacement 5–19

Removal and Replacement

5.2.9 Blower Assembly (PN 12-41009-01)

The blower assembly is accessed from the rear of the equipment cabinet without
extending the LSB chassis for service.

Perform the following procedure to remove the blower assembly:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

1. Open the rear door of the equipment cabinet.

NOTE

Removal of the blower assembly may require removal of the
power controller for easier access. If this is required, disconnect
the power controller from the external source of 200-240 Vac
power before removing the power controller.

2. Remove the 13 screws that secure the blower assembly to the bottom and

back of the LSB chassis (see Figure 5–11).

3. Slide the blower assembly toward the back of the cabinet and reach between

the blower assembly and the chassis to disconnect the blower assembly power
cable.

To replace the blower assembly, reverse steps 1 through 3.

NOTE

If the power controller was removed to gain access to the blower
assembly, reinstall it after replacing the blower assembly.

5–20 Removal and Replacement

Figure 5–11 Removing the Blower Assembly

Removal and Replacement

Blower
Assembly
Screws (13)


Note: Two Screws
(Both Sides) on the
Bottom Flange Are
Not Shown

MK233929

Removal and Replacement 5–21

Removal and Replacement

5.2.10 AC Input Box (PN 30-39579-01)

The ac input box is accessed from the rear of the equipment cabinet without
extending the LSB chassis for service.

Perform the following procedure to remove the ac input box:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
LSB chassis and on the power controller.

1. Open the rear door of the equipment cabinet.

2. Disconnect the power cord from the ac input jack on the ac input box (see

Figure 5–12).

3. Loosen the two captive screws that secure the ac input box to the LSB chassis

(see Figure 5–12).

4. Slide the ac input box toward the back of the cabinet and reach between the

ac input box and the chassis to disconnect the ac input box power cable.

To replace the ac input box, reverse steps 1 through 4.

5–22 Removal and Replacement

Figure 5–12 Removing the AC Input Box

Removal and Replacement

Captive
Screw

Circuit
Breaker

AC Input
Jack

Captive
Screw

MK233930

Removal and Replacement 5–23

Removal and Replacement

5.3 XMI Chassis Components

The following sections contain the removal and replacement procedures for the
components that are unique to the XMI chassis in the rackmount DEC 7000 AXP
and VAX 7000 systems.

5.3.1 Front Bezel

Perform the following procedure to remove the front bezel from the XMI chassis:

1. Grasp the front bezel on each side.

2. Pull straight out until the bezel unsnaps from the catches (see Figure 5–13).
To replace the front bezel, push it onto the front of the chassis until it snaps into

place.

5–24 Removal and Replacement

Removal and Replacement

Figure 5–13 Removing the Front Bezel from the XMI Chassis

MK−2339−31

Removal and Replacement 5–25

Removal and Replacement

5.3.2 Extending the XMI Chassis for Service

WARNING

Before extending the XMI chassis for service, ensure that the
cabinet is stable and that all provided stabilizing features have
been activated. The stabilizing features for the rack or cabinet
are configuration dependent.

Perform the following procedure to extend the XMI chassis for service:

1. Extend the stabilizing legs at the front of the cabinet (if stabilizing legs are

provided).

2. Remove the front bezel (see Section 5.3.1).

3. Remove the four retaining screws that secure the chassis to the front rails

(see Figure 5–14).

CAUTION

Check and ensure that all cables are free to follow the chassis
before extending the chassis.

4. Carefully pull the XMI chassis forward until the slides lock in the extended

position.

To secure the chassis in the cabinet, press in on the left and right slide locks and
reverse steps 1 through 4.

5–26 Removal and Replacement

Figure 5–14 Extending the XMI Chassis

Removal and Replacement

Chassis Retaining Screws

MK−2339−32

Removal and Replacement 5–27

Removal and Replacement

5.3.3 Top Cover

Perform the following procedure to remove the top cover:

1. Extend the XMI chassis for service (see Section 5.3.2).

2. Remove the three screws along the top front edge of the chassis that secure

the top cover (see Figure 5–15).

3. Lift up on the front edge of the top cover and pull forward until the back edge

slides out from under the retaining lip (see Figure 5–15).

To replace the top cover, slide the back edge of the cover under the retaining lip
and install the three screws along the top front edge of the chassis that secure
the top cover.

Figure 5–15 Removing the Top Cover

Top Cover

5–28 Removal and Replacement

MK−2339−33

Removal and Replacement

5.3.4 Bottom Cover

Perform the following procedure to remove the bottom cover:

NOTE

Components that require access from the bottom of the XMI
chassis may be more conveniently accessed by removing the XMI
chassis from the slides and using a workbench area for service.

1. Extend the XMI chassis for service (see Section 5.3.2).

2. Remove the four screws along the bottom front edge of the chassis that secure

the bottom cover (see Figure 5–16).

WARNING

Hold the cover in place while removing the last screw to prevent
the cover from falling.

3. Let the front edge of the bottom cover down and pull forward until the back

edge slides out from under the retaining lip (see Figure 5–16).

To replace the bottom cover, slide the back edge of the cover under the retaining
lip and install the four screws along the bottom front edge of the chassis that
secure the bottom cover.

Removal and Replacement 5–29

Removal and Replacement

Figure 5–16 Removing the Bottom Cover

5–30 Removal and Replacement

MK−2339−34

Removal and Replacement

5.3.5 Control Panel Bezel (PN 70-22117-01)

Perform the following procedure to remove the control panel bezel:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
XMI chassis and on the power controller.

1. Extend the XMI chassis for service (see Section 5.3.2).

2. Remove the two 4-40 screws securing the control panel bezel to the front of

the chassis using a small Phillips screwdriver (see Figure 5–17).

3. Carefully lift the control panel bezel off.

NOTE

Be careful not to lose the small free-floating push-button restart
switch inside the control panel.

To replace the control panel bezel, reverse steps 1 through 3.

NOTE

When replacing the control panel bezel, ensure that the key slots
inside the control panel bezel align with the switches on the
control panel printed circuit board.

Removal and Replacement 5–31

Removal and Replacement

Figure 5–17 Removing the Control Panel Bezel

Control Panel Module
P/N 54−16574

Reset Button

Control Panel Bezel
P/N 70−22117−01

4/40 Screw

5–32 Removal and Replacement

MK−2339−35

Removal and Replacement

5.3.6 Control Panel Module (PN 54-16574-02)

Perform the following procedure to remove the control panel module:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
XMI chassis and on the power controller.

1. Extend the XMI chassis for service (see Section 5.3.2).

2. Remove the control panel bezel (see Section 5.3.5).

3. Remove the top cover (see Section 5.3.3).

4. Remove the four screws that secure the RRD42/TF85 option cage to the right

side of the chassis and lift the cage out.

NOTE

If a TF85 tape drive or an RRD42 CD-ROM reader is installed
in the option cage, remove the option cage by following the
procedure in Section 5.3.15 or Section 5.3.17.

You must wear an antistatic wriststrap attached to the chassis
when handling any modules.

5. Put on the antistatic wriststrap. This strap is contained in the plastic pouch

located on top of the power supply modules.

6. Disconnect the control panel cable connector from the XTC timing module

(see Figure 5–18).

When replacing the control panel module, ensure that the cable
connector is connected with the red stripe on the cable oriented
as shown in Figure 5–18.

CAUTION

NOTE

Removal and Replacement 5–33

Removal and Replacement

7. Squeeze the ends of the four standoffs holding the module to the chassis, and

pull the module past the locking tab on each standoff (see Figure 5–18).

8. Remove the module.
To replace the control panel module, reverse steps 1 through 8.

Figure 5–18 Removing the Control Panel Module

Red Stripe

XTC Timing
Module

MK−2339−36

5–34 Removal and Replacement

Removal and Replacement

5.3.7 XTC Timing Module (PN 70-31509-01)

Perform the following procedure to remove the XTC timing module:

WARNING

Before performing the following removal and replacement
procedures, switch off the circuit breakers on the back of the
XMI chassis and on the power controller.

1. Extend the XMI chassis for service (see Section 5.3.2).

2. Remove the top cover (see Section 5.3.3).

3. Remove the four screws that secure the RRD42/TF85 option cage to the right

side of the chassis and lift the cage out.

NOTE

If a TF85 tape drive or an RRD42 CD-ROM reader is installed
in the option cage, remove the option cage by following the
procedure in Section 5.3.15 or Section 5.3.17.

You must wear an antistatic wriststrap attached to the chassis
when handling any modules.

4. Put on the antistatic wriststrap. This strap is contained in the plastic pouch

located on top of the power supply modules.

5. Reach down through the area where the option cage was installed and

disconnect the three ribbon-style cable connectors (J2, J3, and J4) and the
battery connector (J1) on the XTC timing module (see Figure 5–19). Note the
orientation of the module for later replacement.

6. Remove the four 6-32 screws securing the XTC timing module to the chassis

using a Phillips screwdriver (see Figure 5–19).

7. Remove the XTC timing module by lifting it out through the top of the

chassis.

CAUTION

Removal and Replacement 5–35

Removal and Replacement

To replace the XTC timing module, reverse steps 1 through 7.

Figure 5–19 Battery and XTC Connections

5–36 Removal and Replacement

MK−2339−37