Compaq 4120 - Manual

Compaq 4120

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Table of Contents:

  • Page 2 – Contents; Preface
  • Page 3 – Chapter 2
  • Page 4 – Chapter 5
  • Page 5 – Appendix A
  • Page 6 – Symbols; Technician Notes
  • Page 7 – Laser Safety; LASER INFO
  • Page 8 – Locating Additional Information; Service Training Guides
  • Page 9 – Chapter 1; Product Description; Computer Features and Models; This chapter describes the features of these computer models.
  • Page 10 – Models; The following 4200 models are available:; 200 Family of Personal Computers
  • Page 11 – Compaq Armada 4100 Family of Personal Computers; Standard Features
  • Page 13 – The computer has the following security features:
  • Page 14 – Options
  • Page 18 – External Computer Components
  • Page 21 – DualBay
  • Page 22 – Battery charge
  • Page 23 – Mobile CD Expansion; Stereo speakers
  • Page 25 – Convenience Base Connectors
  • Page 26 – Design Overview - Computer
  • Page 28 – The standard Compaq Armada video subsystem consists of:
  • Page 29 – Troubleshooting; Running Computer Setup as described in Section 2.5
  • Page 30 – Preliminary Steps; to the center
  • Page 31 – Enter; Clearing the Power-On and Setup Passwords; Proceed with the troubleshooting procedures.
  • Page 32 – POST Error Messages
  • Page 33 – Warning Messages
  • Page 34 – Fatal Error Messages
  • Page 35 – Compaq Utilities
  • Page 37 – Computer Checkup
  • Page 39 – and choose another item, or to print the information.; Diagnostic Error Codes; resolved, do not proceed with the remaining steps.; Processor Test Error Codes
  • Page 40 – Memory Test Error Codes
  • Page 41 – Diskette Drive Test
  • Page 42 – Video Test Error Codes
  • Page 43 – Audio Test Error Codes
  • Page 44 – Pointing Device Interface Test Error Codes
  • Page 45 – Troubleshooting Without Diagnostics; Solving Audio Problems
  • Page 46 – Solving Battery and Battery Gauge Problems
  • Page 48 – Solving Diskette and Diskette Drive Problems
  • Page 49 – Solving Hard Drive Problems; Solving CD-ROM Drive Problems
  • Page 50 – Solving Hardware Installation Problems; Solving Infrared Connection Problems
  • Page 51 – Solving Keyboard/Numeric Keypad Problems; Solving Pointing Device Problems
  • Page 52 – Solving Memory Problems
  • Page 53 – Solving PC Card Problems
  • Page 55 – Solving Power Problems
  • Page 56 – Solving Printer Problems; Solving Screen Problems
  • Page 58 – The application was not installed correctly.; Solving Software Application Problems
  • Page 59 – Solving Convenience Base Problems; Display Problems and Solutions
  • Page 60 – External Device Installation Problems and Solutions
  • Page 61 – Solving Network Problems; Solving Ethernet Network Problems
  • Page 62 – module before returning the convenience base for replacement.
  • Page 63 – Chapter 3; Illustrated Parts
  • Page 70 – Cables and Power Cords
  • Page 80 – Shipping Boxes
  • Page 81 – Documentation
  • Page 83 – Chapter 4; Removal and Replacement; Electrostatic Discharge; Typical Electrostatic Voltages
  • Page 84 – to Equipment
  • Page 85 – Store drives in the original shipping containers.; Static-Shielding Protection Levels
  • Page 87 – Recommended Materials and Equipment
  • Page 88 – Service Considerations; Flat-bladed screwdriver; Serial Number
  • Page 90 – Disassembly Sequence Chart
  • Page 91 – Preparing the Computer for Disassembly; Disconnect the External Diskette Drive Bay, if connected.
  • Page 92 – Disconnecting the AC Power and External; Disconnect the AC adapter power cord from the wall.; Disconnect the External Diskette Drive Bay from the computer.
  • Page 93 – Convenience Base; disengage it from the adapter.
  • Page 96 – Convenience Adapter Base
  • Page 97 – Mobile CD Expansion Unit; To detach the computer from the MCD, complete the following steps:
  • Page 98 – Rotate the eject lever on the back of the MCD
  • Page 99 – Close the expansion slot cover on the bottom of the computer.; Reverse the above procedures to attach the computer to the MCD.
  • Page 100 – Grasp the battery cap on the top and bottom
  • Page 102 – and Devices; on the right side of the computer. Lifting the
  • Page 103 – To install the DualBay device, complete the following steps:
  • Page 104 – To remove the pointing device, complete the following steps:
  • Page 105 – To install the pointing device, complete the following steps:
  • Page 106 – Remove the two screws; Reverse the above procedure to install the hard drive.
  • Page 107 – Press the PC card eject button
  • Page 108 – Computer logo
  • Page 109 – the foot free from the base cover.
  • Page 110 – To attach the handle to the computer, follow these steps:
  • Page 111 – Tighten the thumbscrews on the handle by turning them clockwise.
  • Page 112 – To remove the handle from the computer, follow these steps:
  • Page 114 – CPU Base Assembly; Memory cover
  • Page 115 – Reverse the procedure to install the memory cover.
  • Page 116 – Release the locking tab
  • Page 118 – Disconnect the RTC battery cable from the connector.; Reverse the procedure to install a replacement RTC battery.
  • Page 119 – To remove the CPU base cover, complete the following steps:
  • Page 120 – Use the case utility tool to gently lever the side of the cover
  • Page 121 – base
  • Page 122 – board to the magnesium frame.
  • Page 123 – Remove two screws from the bottom left side of the CPU.
  • Page 125 – Lift up the left front of the keyboard assembly about 1/2 inch
  • Page 126 – directive will result in sporadic keyboard performance.
  • Page 128 – attached to the flat ribbon cable.
  • Page 129 – Remove the four clutch screws at the back of the display assembly.
  • Page 130 – Reconnect the display ground cable to the ground clip.
  • Page 131 – Clutch Assembly Components; To remove the clutch cover, complete the following procedures:
  • Page 132 – cable harness, then disconnect the harness from the system board.; Reverse the procedure to install the clutch cover.
  • Page 133 – Remove the clutches from the magnesium frame.
  • Page 134 – System Board Components; To remove the system board, complete the following procedures:
  • Page 137 – connectors to the magnesium frame at the back of the unit.
  • Page 138 – To replace the system board, complete the following procedures:
  • Page 139 – To remove the heatsink, complete the following procedures:
  • Page 140 – Remove the screw that secures the heatsink to the system board.; To install the heatsink, reverse the procedures.
  • Page 141 – To install the video chip heatpipe:; To remove the video chip heatpipe:
  • Page 142 – Frame Components; Important
  • Page 151 – PCMCIA assembly to the system board.
  • Page 152 – To reinstall the PCMCIA assembly, reverse the procedure.
  • Page 154 – Rotate the upper PCMCIA button upwards; To install the PCMCIA ejector buttons, reverse the procedure.
  • Page 156 – Unclip the display ground bracket from the magnesium frame.; To install the display ground bracket, reverse the procedure.
  • Page 157 – Chapter 6; Specifications
  • Page 158 – Computer
  • Page 159 – SVGA Display
  • Page 162 – Hard Drives
  • Page 165 – Diskette Drive
  • Page 167 – X CD-ROM Drive Table
  • Page 169 – Lithium Ion Modular Battery Pack; Lithium Ion Handle Battery Pack
  • Page 170 – Mobile CD Expansion Unit; MCD Expansion Unit
  • Page 171 – External Power Supplies; Automobile Adapter
  • Page 172 – AC Adapter
  • Page 173 – External Battery Charger
  • Page 174 – System Interrupts
  • Page 178 – System Memory Map
  • Page 179 – Appendix A; Connector Pin Assignments; External Keyboard
  • Page 180 – BNC
  • Page 181 – Parallel
  • Page 182 – Expansion Connector
  • Page 184 – Speaker Connector
  • Page 185 – Appendix B; Power Cord Set Requirements; -Conductor Power Cord Set; General Requirements; The requirements listed below are applicable to all countries:
  • Page 186 – Country-Specific Requirements; -Conductor Power Cord Set Requirements — By Country; conductor size. The wall plug
  • Page 187 – Index
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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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Summary

Page 2 - Contents; Preface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents v Contents Preface ..........................................................................................................................xi Symbols ....................................................................

Page 3 - Chapter 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Contents 1.8.5 System Memory ..........................................................................1-191.8.6 Cache ..........................................................................................1-191.8.7 Loca...

Page 4 - Chapter 5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents vii Chapter 5 Removal and Replacement Procedures 5.1 Serial Number...................................................................................... 5-15.2 Disassembly Sequence Chart .................................

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