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Notice, Compaq Professional Workstation AP550, Maintenance and Service Guide

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Notice The information in this publication 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 INFORMATION IS PROVIDED "AS IS" AND COMPAQ COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST INFRINGEMENT. This publication contains information protected by copyright. No part of this publication may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation. © 1999 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. 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. Compaq, Compaq Insight Manager, ROMPaq, QVision, NetFlex, QuickFind, PaqFax, registered United States Patent and Trademark Office. Fastart, Netelligent and SoftPaq are trademarks and/or service marks of Compaq Computer Corporation. Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Pentium is a registered trademark and Xeon is a trademark of Intel Corporation. Other product names mentioned herein may be trademarks and/or registered trademarks of their respective companies. Compaq Professional Workstation AP550 Maintenance and Service Guide First Edition (October 1999) Part Number 135618-001 Spare Part Number 158279-001

Section	Page
Compaq Professional Workstation AP550 Maintenance and Service Guide	8
Notice	10
Contents	11
About This Guide	15
Symbols in Text	15
Compaq Technician Notes	16
Where to Go for Additional Help	17
Illustrated Parts Catalog	18
Overview	19
Spare Parts List	21
Service Preliminaries	30
Overview	30
Preliminary Warnings and Cautions	31
Electrostatic Discharge Information	32
Equipment Symbols	32
Tools and Software Requirements	33
Warranty Information	33
Removal and Replacement Procedures	34
Introduction	34
Serial Number	35
Service Preparations	36
Cable Lock	36
Workstation Access Panel	37
Front Bezel	39
Subpanel and Bezel Blanks	40
Mass Storage Devices	42
Installing Optional SCSI Devices	51
Drivelock	54
Expansion Boards	56
Serial Port Cover Connector	60
Card Guide	61
Memory Modules	62
Processor	73
Speaker	79
System Board Fan	80
Power Supply	81
Power Switch	83
System Board	84
I/O Panel	86
Lithium Battery	87
Converting a Minitower to a Desktop Configuration	89
Converting a Desktop to a Minitower Configuration	92
Diagnostic Tools	95
Overview	95
Power-On Self-Test (POST)	96
POST Messages	97
Troubleshooting Minor Problems	103
Computer Setup and Diagnostics Utilities	115
SCSI Error Codes	133
Upgrading the ROM	136
FailSafe Boot Block ROM	137
Fault Management	139
Compaq Insight Manager	140
Compaq Management Agents for Workstations	140
Compaq Restore CD	141
Compaq Diagnostics for Windows NT	142
System Security	143
Security Features	143
Advanced Security Management	150
Jumper and Switch Information	152
Overview	152
Mass Storage	154
Physical and Operating Specifications	157
Overview	157
System Unit	158
375-W Power Supply	164
Diskette Drive	165
Zip Drive	166
CD-ROM Drive	170
DVD-ROM Drive	172
Hard Drives	174
Audio System	177
Keyboard	177
Mouse	178
Graphics Controllers	179
Network Controller	181
External Connectors	182
Overview	182
Physical Location	182
Pin Assignments	184

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Notice

The information in this publication 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 INFORMATION IS PROVIDED “AS IS” AND COMPAQ COMPUTER

CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR STATUTORY AND

EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR

PARTICULAR PURPOSE, GOOD TITLE AND AGAINST INFRINGEMENT.

This publication contains information protected by copyright. No part of this publication may be

photocopied or reproduced in any form without prior written consent from 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.

Compaq, Compaq Insight Manager, ROMPaq, QVision, NetFlex, QuickFind, PaqFax, registered United

States Patent and Trademark Office.

Fastart, Netelligent and SoftPaq are trademarks and/or service marks of Compaq Computer Corporation.

Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.

Other product names mentioned herein may be trademarks and/or registered trademarks of their respective

companies.

Compaq Professional Workstation AP550

Maintenance and Service Guide

First Edition (October 1999)

Part Number 135618-001

Spare Part Number 158279-001