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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.
©
1998 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq and LTE are registered is the U. S. Patent and Trademark Office.
Armada is a trademark of Compaq Computer Corporation.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft 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 Armada 4100 and 4200 Families of Personal Computers
First Edition (January 1998)
Documentation Part Number 234843-002
Spare Part Number 273027-002
Compaq Computer Corporation
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Contents
Preface
..........................................................................................................................xi
Symbols ........................................................................................................xi
Technician Notes..........................................................................................xi
Laser Safety................................................................................................ xii
CDRH Regulations..................................................................................... xii
Locating Additional Information............................................................... xiii
Chapter 1
Product Description
1.1 Computer Features and Models........................................................... 1-1
1.2 Models ................................................................................................. 1-2
1.3 Standard Features ................................................................................ 1-3
1.3.1 Software Fulfillment .................................................................... 1-5
1.3.2 Security Features.......................................................................... 1-5
1.3.3 Power Management...................................................................... 1-5
1.4 Options ................................................................................................ 1-6
1.4.1 System Memory Options ............................................................. 1-6
1.4.2 Display Options ........................................................................... 1-7
1.4.3 Secondary Cache.......................................................................... 1-7
1.4.4 Mobile CD Expansion Unit.......................................................... 1-7
1.4.5 Convenience Base ........................................................................ 1-7
1.4.6 Mass Storage Options .................................................................. 1-7
1.4.7 AC Adapter .................................................................................. 1-8
1.4.8 Automobile Adapter..................................................................... 1-8
1.4.9 Lithium Ion Battery Pack............................................................. 1-8
1.4.10 External Battery Charger ........................................................... 1-8
1.4.11 External Keyboards.................................................................... 1-8
1.4.12 External Monitors ...................................................................... 1-8
1.4.13 Compaq Mouse .......................................................................... 1-9
1.4.14 Trackball Pointing Device ......................................................... 1-9
1.5 External Computer Components ......................................................... 1-9
1.5.1 Front and Left Side Components ................................................. 1-9
1.5.2 Front and Right Side Components ............................................. 1-11
1.5.3 Rear Components....................................................................... 1-12
1.5.4 Bottom Components .................................................................. 1-13
1.5.5 Status Panel Lights..................................................................... 1-14
1.6 Mobile CD Expansion Unit Components......................................... 1-15
1.7 Convenience Base Connectors .......................................................... 1-17
1.8 Design Overview - Computer............................................................ 1-18
1.8.1 System Unit................................................................................ 1-18
1.8.2 System Board ............................................................................. 1-18
1.8.3 Processor Board ......................................................................... 1-19
1.8.4 Processor .................................................................................... 1-19
Contents
v
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1.8.5 System Memory..........................................................................1-19
1.8.6 Cache ..........................................................................................1-19
1.8.7 Local Bus Video .........................................................................1-20
Chapter 2
2.1 Preliminary Steps ................................................................................2-2
2.2 Clearing the Power-On and Setup Passwords.....................................2-3
2.3 Power-On Self Test (POST)................................................................2-4
2.4 POST Error Messages .........................................................................2-4
2.5 Compaq Utilities .................................................................................2-7
2.5.1 Running Computer Setup ............................................................2-7
2.5.2 Running Computer Checkup (TEST) ..........................................2-8
2.5.3 View System Information (INSPECT) ......................................2-10
2.6 Diagnostic Error Codes .....................................................................2-11
2.7 Troubleshooting Without Diagnostics ..............................................2-17
2.7.1 Solving Minor Problems............................................................2-17
Chapter 3
Illustrated Parts
3.1 System Unit..........................................................................................3-2
3.2 Mass Storage Devices ..........................................................................3-6
3.3 Cables and Power Cords ......................................................................3-8
3.4 Standard and Optional Boards ...........................................................3-10
3.5 Display Assembly ..............................................................................3-12
3.6 Options ...............................................................................................3-14
3.8 Miscellaneous Parts............................................................................3-16
3.8 Shipping Boxes ..................................................................................3-18
3.9 Documentation ...................................................................................3-19
Chapter 4
Removal and Replacement Preliminaries
4.1 Electrostatic Discharge ........................................................................4-1
4.1.1 Generating Static ..........................................................................4-1
4.1.2 Preventing Electrostatic Damage to Equipment ...........................4-2
4.1.3 Removing Batteries ......................................................................4-2
4.1.4 Preventing Damage to Drives .......................................................4-3
4.1.5 Grounding Methods ......................................................................4-3
4.1.6 Grounding Workstations...............................................................4-4
4.1.7 Grounding Equipment ..................................................................4-4
4.1.8 Recommended Materials and Equipment .....................................4-5
4.2 Service Considerations.........................................................................4-6
4.2.1 Tool Requirements........................................................................4-6
4.2.2 Cables and Connectors .................................................................4-6
4.3 Serial Number ......................................................................................4-6
vi
Contents
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Chapter 5
Removal and Replacement Procedures
5.1 Serial Number...................................................................................... 5-1
5.2 Disassembly Sequence Chart .............................................................. 5-2
5.3 Preparing the Computer for Disassembly............................................ 5-3
5.3.1 Disconnecting the AC Power and
External Diskette Drive Bay ................................................................. 5-4
5.3.2 Undocking the Computer ............................................................. 5-5
5.3.3 Battery Packs.............................................................................. 5-11
5.3.4 DualBay Battery Pack and Devices .......................................... 5-13
5.3.4 Pointing Devices ........................................................................ 5-16
5.3.5 Hard Drive.................................................................................. 5-18
5.3.6 PC Card ...................................................................................... 5-19
5.4 External Computer Components ....................................................... 5-20
5.4.1 Computer Logo .......................................................................... 5-20
5.4.2 Computer Feet............................................................................ 5-21
5.4.3 Handle ........................................................................................ 5-22
5.5 CPU Base Assembly ......................................................................... 5-26
5.5.1 Memory Cover ........................................................................... 5-27
5.5.2 Memory Boards.......................................................................... 5-28
5.5.3 Lithium Real Time Clock Battery.............................................. 5-30
5.5.4 CPU Base Cover ........................................................................ 5-31
5.5.5 Processor Shield and Board ...................................................... 5-34
5.5.6 CPU Cover and Keyboard Assembly........................................ 5-36
5.6 Display Assembly.............................................................................. 5-40
5.7 Clutch Assembly Components .......................................................... 5-44
5.7.1 Clutch Cover .............................................................................. 5-44
5.7.2 Clutches...................................................................................... 5-46
5.8 System Board Components ............................................................... 5-47
5.8.1 System Board ............................................................................. 5-47
5.8.2 Ensuring ESD Protection ........................................................... 5-52
5.8.3 Heatsink and Video Chip Heatpipe........................................... 5-53
5.9 Frame Components............................................................................ 5-56
5.9.1 Upper PCMCIA Door ................................................................ 5-56
5.9.2 Lower PCMCIA Door................................................................ 5-59
5.9.3 DualBay Eject Assembly ........................................................... 5-62
5.9.5 PCMCIA Assembly .................................................................. 5-64
5.9.6 PCMCIA Ejector Buttons .......................................................... 5-67
5.9.7 Display Ground Bracket............................................................. 5-69
Chapter 6
Specifications
6.1 Computer ............................................................................................. 6-2
6.2 Displays .............................................................................................. 6-3
6.3 Hard Drives ......................................................................................... 6-6
Contents
vii
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6.4 Diskette Drive ......................................................................................6-9
6.5 CD-ROM Drives ...............................................................................6-10
6.6 Battery Packs.....................................................................................6-13
6.7 Mobile CD Expansion Unit................................................................6-14
6.8 External Power Supplies ....................................................................6-15
6.9 System Interrupts ...............................................................................6-18
6.10 System DMA....................................................................................6-19
6.11 System I/O Address ........................................................................6-20
6.12 System Memory Map......................................................................6-22
Appendix A
Connector Pin Assignments
...................................................................................A-1
Appendix B
Power Cord Set Requirements
..............................................................................B-1
3-Conductor Power Cord Set .................................................................... B-1
General Requirements .......................................................................... B-1
Country-Specific Requirements............................................................ B-2
Index
................................................................................................................................... I-1
viii
Contents

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