Compaq ProSignia 500 Manual

Notice

The information in this guide is subject to change without notice.

Compaq Computer Corporation shall not be liable for technical or editorial

errors or omissions contained herein; nor for incidental or consequential

damages resulting from the furnishing, performance, or use of this

material.

This guide contains information protected by copyright. No part of this

guide may be photocopied or reproduced in any form without prior written

consent from Compaq Computer Corporation.

COMPAQ, SYSTEMPRO, FASTART

Registered U.S. Patent and Trademark Office.

ProSignia and QVision are trademarks of Compaq Computer Corporation.

The software described in this guide is furnished under a license agreement

or nondisclosure agreement. The software may be used or copied only in

accordance with the terms of the agreement.

Product names mentioned herein may be trademarks and/or registered

trademarks of their respective companies.

MAINTENANCE AND SERVICE GUIDE

COMPAQ ProSignia Family of PC Servers

First Edition (September 1992)

Text Number 144257-001

Preface

This MAINTENANCE AND SERVICE GUIDE is a troubleshooting guide that can be

used for reference when servicing COMPAQ ProSignia Family of Personal

Computer Servers.

Compaq Computer Corporation reserves the right to make changes to the

COMPAQ ProSignia PC Servers without notice.

Symbols

The following text and symbols mark special messages throughout this guide:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Text set off in this manner indicates that failure to follow directions in

the warning could result in bodily harm or loss of life.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Text set off in this manner indicates that failure to follow directions

could result in damage to equipment or loss of data.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

IMPORTANT: Text set off in this manner presents clarifying information or

specific instructions.

NOTE: Text set off in this manner presents commentary, sidelights, or

interesting points of information.

Technician Notes

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Only authorized technicians trained by Compaq should attempt to repair this

equipment. All troubleshooting and repair procedures are detailed to allow

only subassembly/module level repair. Because of the complexity of the

individual boards and subassemblies, no one should attempt to make repairs

at the component level or to make modifications to any printed wiring

board. Improper repairs can create a safety hazard. Any indications of

component replacement or printed wiring board modifications may void any

warranty.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

To properly ventilate your system, you must provide at least 3 inches

(7.62 cm) of clearance at the front and back of the computer.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

The computer is designed to be electrically grounded. To ensure proper

operation, plug the AC power cord into a properly grounded AC outlet only.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Locating Additional Information

The following documentation is available to support these products:

o Documentation Set

o MS-DOS VERSION 5 REFERENCE GUIDE

o MS OS/2 STANDARD VERSION 1.2

o TECHNICAL REFERENCE GUIDE

o COMPAQ SERVICE QUICK REFERENCE GUIDE

o Service Training Guides

o COMPAQ SERVICE ADVISORIES AND BULLETINS

o COMPAQ QuickFind

Chapter 1 Illustrated Parts Catalog

REFER TO ADDENDUM

Chapter 2 Removal and Replacement Procedures

REFER TO ADDENDUM

This chapter provides subassembly/module-level removal and replacement

procedures for the COMPAQ ProSignia PC Server. After completing all

necessary removal and replacement procedures, run the DIAGNOSTICS program

to verify that all components operate properly.

NOTE: Refer to the support software guide for procedures on using the

COMPAQ System Configuration utility when installing or removing

expansion boards, mass storage devices, and Extended Industry

Standard Architecture (EISA) options.

To service the COMPAQ ProSignia Personal Computer System, you will need the

following:

o Torx T-15 screwdriver

o Ethernet loop back plug

o EISA Configuration software

o Diagnostics software

o Drive Array Advanced Diagnostics software

ELECTROSTATIC DISCHARGE INFORMATION

A discharge of static electricity can damage static-sensitive devices or

micro-circuitry. Proper packaging and grounding techniques are necessary

precautions to prevent damage. To prevent electrostatic damage observe the

following precautions:

o Transport products in static-safe containers such as conductive tubes,

bags, or boxes.

o Keep electrostatic-sensitive parts in their containers until they arrive

at static-free stations.

o Cover work stations with approved static-dissipating material. Provide a

wrist strap connected to the work surface and properly grounded tools and

equipment.

o Keep work area free of non-conductive materials such as ordinary plastic

assembly aids and styrofoam.

o Always be properly grounded when touching a static sensitive component or

assembly.

o Avoid touching pins, leads or circuitry.

o Always place drives' PCB assembly side down on the foam.

o Use conductive field service tools.

PREPARATION PROCEDURES

Before beginning any of the removal and replacement procedures, complete

the following steps:

1. Turn the computer and any peripheral devices off.

2. Disconnect the AC power cord from the AC outlet then from the system

unit.

3. Disconnect all external peripheral devices from the computer.

REMOVAL AND REPLACEMENT PROCEDURES

Side Access Door/Front Bezel

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

High voltage present. Extreme care must be taken when running the COMPAQ

ProSignia PC Server without the system unit cover on.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

1. Loosen thumb screws (3) on back bezel.

2. Slide side access door back and then out.

3. Remove front bezel retaining screw (1).

4. Pull front bezel off at the three pressure points shown in figure.

System Unit Cover Removal

1. Remove side access door.

2. Unscrew Torx T-15 screws (4) at back panel.

3. Slide system unit cover backward and then up.

4. Reverse steps for replacing system unit cover.

Mass Storage Devices

The COMPAQ ProSignia PC Server contains two areas for mass storage devices:

the removable media area and the side access drive bays.

Removable Media Bays

Figure 2-3 shows the Removable Media Bays are located at the top of the

unit in the front panel. Table 2-1 shows the supported mass storage

devices and locations for the removable media bays.

Table 2-1. Removable Media Bay Configurations

===========================================================================

Mass Storage Device Storage Bays

7654

---------------------------------------------------------------------------

1.44-Megabyte Diskette Drive X X

1.2-Megabyte Diskette Drive X X

3.5-Inch Hard Drive X X X

525-Megabyte Tape Drive X X X

5.0-Gigabyte Digital Audio Tape (DAT) Drive X X X

===========================================================================

1. Remove side access door and front bezel.

2. Disconnect power and signal cables from rear of drive.

3. Remove retaining screws (2).

4. Slide mass storage device out.

5. Reverse steps for installation.

Cable Folding Diagrams for Removable Media Bays

Side Access Drive Bays

The side access drive bay area is located behind the side access door and

can hold up to four half height snap-in hard drives.

1. Disconnect power and signal cables.

2. Remove hard drives by squeezing drive retaining clips and sliding

drives out.

3. Reverse order for installing drives.

Cable Folding Diagrams for SCSI Devices and Side Access Drive Bays

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