Compaq ProSignia 500 Handbuch
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.
Copyright 1992 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
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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