HP Compaq Armada 4100, Compaq Armada 4200 Service Manual

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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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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

vi Contents

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

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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

3-Conductor Power Cord Set....................................................................B-1

General Requirements ..........................................................................B-1

Country-Specific Requirements............................................................B-2

Index

................................................................................................................................... I-1

..............................................................................B-1

viii Contents

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Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Armada 4100 and 4200 Families of Personal Computers. Additional information is available in the Service Quick Reference Guide and in QuickFind.

Compaq Computer Corporation reserves the right to make changes to the Compaq Armada 4100 and 4200 Families of Personal Computers without notice.

Symbols

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

WARNING:

warning could result in bodily harm or loss of life.

CAUTION:

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 other points of information.

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

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

Technician Notes

WARNING:

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 indication of component replacement or printed wiring board modifications may void any warranty or exchange allowances.

CAUTION:

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

WARNING:

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

Only authorized technicians trained by Compaq should attempt to repair

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

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

Preface xi

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Laser Safety

All Compaq systems, equipped with CD-ROM drives, comply with appropriate safety standard including IEC 825. With specific regard to the laser, the equipment complies with laser product performance standards set by government agencies as a Class 1 laser product. It does not emit hazardous light; the beam is totally enclosed during all modes of customer operation and maintenance.

CDRH Regulations

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products on August 2, 1976. These regulations apply to laser products manufactured from August 1, 1976. Compliance is mandatory for products marketed in the United States.

WARNING:

other than those specified herein or in the CD ROM installation guide may result in hazardous radiation exposure.

This system is classified as a CLASS 1 LASER PRODUCT. This label is located on the outside of your system. A similar label also appears on the internal CD-ROM installed in your system.

LASER INFO Laser Type: Semiconductor GaAIAs

Wave Length: 780 +/- 35 nm Divergence Angle: 53.5 Degree +/- 1.5 Degree Output Power: Less than Polarization: Circular Numerical Aperture: 0.45 +/- 0.04

Use of controls or adjustments or performance of procedures

-1

0.2mW or 10,869 W

•

m-2sr

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.

xii Preface

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Locating Additional Information

The following documentation is available to support the products:

Quick Setup

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Reference Guide

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Introducing Microsoft Windows 95

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Compaq Service Quick Reference Guide

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Service Training Guides

Compaq Service Advisories and Bulletins

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Compaq QuickFind

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Technical Reference Guide

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Preface xiii

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Chapter 1

Product Description

1.1 Computer Features and Models

The Compaq Armada 4100 and 4200 Families are mobile notebook computers with advanced modularity, processors, and video graphics. Both families provide fullfunction, Pentium-based notebook computers that allow desktop functionality and connectivity through the use of an optional Mobile CD (MCD) Expansion Unit and a convenience base.

The 4100 Family provides light weight multimedia models with up to 166-MHz processors with MMx technology, 8- or 16-MB of system memory, hard drive capacity up to 2.0 GB, and primary battery power from the handle battery.

The 4200 Family provides slimline models with 233- or 266-MHz processor, 32-MB of system memory, hard drive capacity up to 4-GB, and primary battery power from the modular battery pack in the DualBay.

This chapter describes the features of these computer models.

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Compaq Armada 4100

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Compaq Armada 4110 and 4110D

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Compaq Armada 4115

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Compaq Armada 4120 and 4120T

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Compaq Armada 4125D and 4125T

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Compaq Armada 4130T

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Compaq Armada 4131T

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Compaq Armada 4140T

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Compaq Armada 4150 and 4150T

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Compaq Armada 4160T

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Compaq Armada 4160T Slimline

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Compaq Armada 4210T

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Compaq Armada 4220T

Product Description 1-1

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Figure 1-1

. Compaq Armada 4100 and 4200

1.2 Models

The following 4200 models are available:

Table 1-1

4200 Family of Personal Computers

Model Processor Display Hard Drive Cache

4210T 233-MHz Pentium 12.1-inch CTFT 3.0-GB 256-KB (L2) 32/96

4220T 266-MHz Pentium 12.1-inch CTFT 4.0-GB 512-KB (L2) 32/96

Memory/

Upgrade

1-2 Product Description

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The following 4100 Family models are available:

Table 1-2

Compaq Armada 4100 Family of Personal Computers

Memory/

Model Processor Display Hard Drive Cache

4120 120-MHz Pentium 11.3-inch CSTN 810-MB 256-KB 16/48*

4125D 120-MHz Pentium 11.3-inch CSTN 810-MB 256-KB 8/40

4120T 120-MHz Pentium 11.8-inch CTFT 810-MB 256-KB 8/40

4120T 120-MHz Pentium 11.8-inch CTFT 810-MB 256-KB 16/48*

4125T 120-MHz Pentium 11.8-inch CTFT 810-MB 256-KB 16/48*

4130T 133-MHz Pentium 11.8-inch CTFT 1.08-GB 256-KB 16/48

4131T 133-MHz Pentium 11.8-inch CTFT 1.4-GB 256-KB 16/48

4150 150-MHz Pentium w/ MMx 12.1-inch CSTN 1.6-GB 256-KB 16/80

4150T 150-MHz Pentium w/ MMx 12.1-inch CTFT 1.6-GB 256-KB 16/80

4160T 166-MHz Pentium w/ MMx 12.1-inch CTFT 2.0-GB 256-KB 16/80

4160T Slimline 166-MHz Pentium w/ MMx 12.1-inch CTFT 2.0-GB 256-KB 16/80

* Japan only

Upgrade

1.3 Standard Features

Depending upon your computer model, the processor, DRAM, hard drive space, and color monitor type and size may vary:

Available in the Compaq Armada 4200 models:

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233- or 266-MHz Pentium processors, upgradable to future Pentium technology

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64-bit graphics controller

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32-MB of dynamic random access memory (DRAM), expandable to 96 MB

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3-GB or 4-GB 2.5- inch hard drives (4-GB hard drive is not compatible with the 4100 modeles)

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12.1-inch Color Thin Film Transistor (CTFT) SVGA displays

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External Diskette Drive Bay

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Modular Lithium Ion (Li-ion) battery in the DualBay as the primary battery power

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32-bit cardbus PC card slot

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Handle battery in handle shell

Available in the Compaq Armada 4131T-4160T models:

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4131T has a 133-MHz Pentium procesor and the 4150 has a 150-MHz Pentium processor.The 4150 and the 4150T have 150-MHz Pentium processors with MMx technology. The 4160T and the 4160T slimline have 166-MHz Pentium processors with MMx technology.

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Cirrus logic LCD graphic controller

Product Description 1-3

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16-MB of dynamic random access memory (DRAM), expandable to 40-, 48- or 80 MB

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1.4-GB, 1.6-GB, and 2-GB hard drives

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Lithium Ion (Li-ion) handle battery pack primary battery power

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16-bit PC card system

Available in the Compaq Armada 4100-4130T models:

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All models prior to and including the 4131T can be upgraded to a 133-MHz Pentium processor by replacing the processor board.

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75-, 100-, 120-, or 133-MHz Pentium processors.

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8- or 16-MB of dynamic random access memory (DRAM), expandable to 72- or 80MB

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630-MB, 810-MB, or 1.08-GB 2.5- inch hard drives

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10.4-inch Color Super Twist Nematic (CSTN), 11.3-inch CSTN, or 11.8-inch Color Thin Film Transistor (CTFT) SVGA displays

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Lithium Ion (Li-ion) handle battery pack primary battery power

The following features are standard in both the Compaq Armada 4100 and 4200 Families:

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NTSC/PAL TV video allows full screen, full motion digital video presentation with interleaved synchronized stereo sound. MPEG accommodates full motion video in the range of 24 frames per second (cinema quality) to 30 frames per second (television quality).

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IDE hard drive in the dedicated hard drive bay. Cable select technology is employed for device 0/device 1 selection. The hard drive is secured in place with a pair of screws

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3.5-inch 1.44-MB diskette drive DualBay module supports a single diskette drive

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Supports Lithium Ion (Li-ion) and Nickel Metal Hydride (NiMH) handle battery packs

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Sound Blaster−compatible audio controller with internal stereo speakers and internal microphone

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Full-size 101 key compatible keyboard including 12 function keys, 8 cursor control keys, inverted-T cursor control keys, and embedded numeric keypad

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Four user-programmable keys

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Touchpad pointing device

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Operates from an internal battery pack or an AC adapter that is compatible with domestic or international power sources

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Power management and security features

1-4 Product Description

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Infrared interface for wireless communication with other IrDA-compliant devices at data rates up to 115 kbaud or 4 mbps on the 4210T, 4220T, 4150, 4150T, 4160T, and the 4160T Slimline models.

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Two PCMCIA standard device slots that will accommodate two types I and II and one type III PC Cards

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120-pin expansion connector provides the interface to the Mobile CD Expansion Unit (MCD) and the convenience base

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Rear-panel ports provide connections for parallel and serial, video out, keyboard/mouse, and IrDA compliant infrared devices

1.3.1 Software Fulfillment

Backup software may be ordered directly from Compaq Computer Corporation through the Compaq Order Center. Both the model and serial numbers of the computer are needed to identify the specific software available.

For technical questions about software for the computer, contact a Compaq Technical Support Engineer. The model and serial numbers of the computer should be available before making the call.

1.3.2 Security Features

The computer has the following security features:

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Ability to secure the computer and MCD Expansion Unit to an immovable object with an optional cable lock.

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Ability to establish power-on and setup passwords and to disable ports and devices from the Security menu in Computer Setup.

1.3.3 Power Management

The computer supports three power management modes:

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Local Standby: The ability of individual subsystems to enter reduced power modes after predetermined periods of inactivity.

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Global Standby: The ability to place all subsystems in a reduced power mode after a predetermined period of inactivity.

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Hibernation: The ability to save the system configuration and user data to the hard disk, for restoration at a later time.

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ACPI Hardware Ready (Advanced Configuration and Power Interface): the 4200 Family models support the operation of hardware and software power specifications to interface in a single system and be used as needed.

In addition, there are the OFF and ON states. In the OFF state, the computer appears to be consuming no power; however, as long as there is a battery capable of supplying current, some components will be powered up, performing housekeeping tasks and

Product Description 1-5

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waiting to be awakened. In the ON state, all systems are powered up and the unit is completely functional.

1.4 Options

The 4100 and 4200 Families support the following options:

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MCD Expansion Unit

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Convenience base (Passthrough and Ethernet models)

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Memory expansion boards

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Li-ion handle battery packs

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Li-ion modular battery pack

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Automobile Adapter

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AC Adapter

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External Battery Charger

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PCMCIA modem

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Trackball pointing device

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AC power cords for international travelers

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Display upgrades (4100 Family models only)

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Hard drive upgrades (model dependent)

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Processor upgrades (4100 Family models only)

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External Battery Charger

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External keyboards

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External diskette drive bay

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Compaq mouse

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USB Cardbus PC card(4200 Family models only)

1.4.1 System Memory Options

The computer supports optional 4-, 8-, 16-, 32-MB or 64-MB memory board sets. The memory boards are 70 ns Fast Page Mode DRAM SODIMMs, without parity. System memory can be expanded to 40, 48, or 96-MB of DRAM depending on the model.

The 4210T and 4220T models can support standard EDO and FP memory upgrades. Compaq does not offer EDO memory upgrade kits.

The system includes two DIMM slots that must be populated in pairs with DIMMs of equal size and type. Either parity or non-parity DIMMs may be used, but parity checking will not be enabled by the memory controller.

1-6 Product Description

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1.4.2 Display Options

The 4100 Family models with 11.3-inch, 11.8-inch, or CSTN displays can be upgraded to an 12.1-inch Color Thin Film Transistor (CTFT) SVGA display.

1.4.3 Secondary Cache

The 4200 Family models are equipped with 256-KB or 512-KB secondary (L2) cache of write-back/write-through cache on the system I/O board.

Models 4110 through 4160T of the 4100 Family are equipped with 256-KB of writeback/write-through cache on the system I/O board.

1.4.4 Mobile CD Expansion Unit

The Mobile CD-ROM Expansion Unit provides the following multimedia capabilities:

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CD-ROM drive

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Integrated stereo speakers

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Game port with MIDI support

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Dedicated battery bay

The CD-ROM drive is available in the optional MCD Expansion unit. The drive supports the following formats:

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ISO-9660, the most common CD-ROM format

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CD-ROM XA eXtended Architecture, a standard for storing multimedia information

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Photo CD (Kodak's format for storing photographic images on CD-ROM)

1.4.5 Convenience Base

The convenience base provides the following added capabilities:

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Pass-through ports (serial, parallel, and video)

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Expansion features (mouse and keyboard ports, network support)

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Five-degree tilt for the notebook keyboard

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Charging of batteries in the system

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Integrated Ethernet (available on models with Ethernet capability)

1.4.6 Mass Storage Options

A 4-GB hard drive is available as options for the 4210T. The 3-GB hard drive supports both the 4100 and 4200 Family models. Only a single diskette drive may be used at any one time with the computer. This drive may be used in the DualBay or externally with an optional parallel cable.

Product Description 1-7

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1.4.7 AC Adapter

The AC adapter supplies DC voltage to the system converter to operate and/or charge the installed battery pack(s). The adapter provides sufficient power to charge each main battery pack in 1.5 hours or less with the system off, or in 2.5 hours or less with the system on. The AC adapter power specifications are presented in Chapter 6.

1.4.8 Automobile Adapter

The automobile adapter is used to charge the computer while traveling in an automobile. The Automobile Adapter power specifications are presented in Chapter 6.

1.4.9 Lithium Ion Battery Pack

Lithium Ion (Li-ion) battery packs offer superior performance over nickel metal hydride batteries. NiMH batteries are not recommended. Li-ion batteries weigh approximately half as much as the NiMH battery packs and are compatible with the External Battery Charger and its charging options. They are available in both battery handle and modular bay forms.

1.4.10 External Battery Charger

The External Battery charger has the following features:

■

Two battery charge slots

■

Accepts Li-ion handle and modular batteries

■

Fast charges one battery in 1.5 hours

■

Fast charges two batteries in 3 hours

1.4.11 External Keyboards

The following external full-size keyboards are supported:

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Enhanced III keyboard

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SpaceSaver keyboard

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Alternative design keyboard

1.4.12 External Monitors

The following external monitors are supported:

■

QVision 172 Color Monitor

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151 FS Color Monitor

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171 FS Color Monitor

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V50 Color

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V70 Color

1-8 Product Description

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P50 Color

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P70 Color

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P110 Color

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P1610 Color

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TFT500 Flat Panel

1.4.13 Compaq Mouse

The computer supports a PS/2 mouse or other external pointing device.

1.4.14 Trackball Pointing Device

The modular trackball provides an effective alternate to the touchpad or an external mouse when the machine is used in either a portable or desktop environment.

Product Description 1-9

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1.5 External Computer Components

The external computer components are illustrated and described in this section.

1.5.1 Front and Left Side Components

The front and left side external components are shown in the following figure and identified in this section:

Cable lock provision

Hard drive compartment

PC Card slots

PC Card eject buttons

Audio connectors

Display latch

Figure 1-2

1-10 Product Description

. Front and Left Side Components

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1.5.2 Front and Right Side Components

The front and right side computer components are shown and identified in this section.

Pointing device

DualBay module

Speaker

DualBay eject button

AC power connector

User programmable keys

Figure 1-3.

Front and Right Side Components

Product Description 1-11

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1.5.3 Rear Components

The front and right side computer components are shown and identified in this section.

Keyboard/mouse connector

Parallel connector

Serial connector

Infrared lens (IrDA compliant)

External monitor connector

NTSC/PAL video

Status panel indicator lights

Handle

Figure 1-4

1-12 Product Description

. Rear Components

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5.4 Bottom Components

The bottom external components are shown in the following figure and are identified in this section:

DualBay

Pointing device

Memory compartment

Expansion slot

Hard drive compartment

Figure 1-5

. Bottom Components

Product Description 1-13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5.5 Status Panel Lights

The status panel lights are shown in the following figure and are identified in this section:

Power/Suspend

Battery charge

Caps Lock

Scroll Lock

Num Lock

Figure 1-6.

1-14 Product Description

Status Panel Lights

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Mobile CD Expansion Unit Components

The front and left components of the Mobile CD Expansion Unit are shown in the following figure and are identified in this section:

Stereo speakers

CD-ROM drive

Figure 1-7

. Left and Front Components

Product Description 1-15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The right and rear components are shown in the following figure and are identified in this section:

Battery bay

MIDI/game device

AC adapter connector

Convenience Base expansion connector

Computer expansion connector

Unlocking lever

Expansion posts

Figure 1-8

1-16 Product Description

. Right and Rear Components

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.7 Convenience Base Connectors

The convenience base connectors are shown in the following figure and are identified in this section:

Stereo speaker connector

External keyboard

Mouse

AC power

Serial port

Monitor

Parallel port

BNC (thin coaxial cable) connector*

RJ-45 connector*

* These connectors are available on the convenience base with Ethernet capability.

WARNING:

equipment, do not plug telecommunications/telephone connectors into the Network Interface Card (NIC) receptacles.

To reduce the risk of electrical shock, fire or damage to the

Figure 1-9.

Convenience Base Components

Product Description 1-17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.8 Design Overview - Computer

This section presents a design overview of the 4100 and 4200 Families. The overview is limited to field replaceable parts. All replacement parts are listed in Chapter 3. Removal and replacement procedures are presented in Chapter 5.

The computer is a traditional clamshell design with a display unit attached to a system unit. The computer opens to reveal a backlighted LCD display and a full-sized keyboard. The display is designed for a continuously adjustable tilt angle. The system unit houses the keyboard, I/O ports, operator controls and indicators, and DualBay devices.

1.8.1 System Unit

The system unit contains the following field-replaceable parts:

■

System board

■

Processor board

■

Display assembly

■

CPU/keyboard cover

■

Internal microphone

■

Optional memory expansion boards

■

Lithium Real Time clock battery

■

Hard drive

■

Diskette drive

■

Handle

■

Pointing device

■

CPU base cover

■

PCMCIA assembly

1.8.2 System Board

The Compaq Armada system electronics are integrated on two printed circuit assemblies; the system board and the processor board. The 4100 system boards are not compatible with the 4200 Family system boards. Similarly, the 4200 system boards are not compatible with the 4100 Family.

1-18 Product Description

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1.8.3 Processor Board

Prior to the 4150 model, there are two processor board PCAs with either 8-MB or 16-MB of memory and with a level-2 cache populating the models with 100-, 120- and 133-MHz processors. The MMX processor on the 4150 , 4150T, and 4160T are P55CLM processors operating at 150 or 166 MHz. These processors are not compatible with 4131T, 4130T, 4120T, 4120, 4110, and 4100 models.

In each of the 4100 and 4200 systems there are two processor board PCAs with a level2 cache. The processor board contains the CPU, the OPTi 82C557 system Controller, the OPTi 82C556 data buffer controller, and, if populated on the PCB, cache data RAM. Also mounted on the processor board is an electronic temperature sensor that

interfaces to the system through the I The 4210T and 4220T processor boards include the 233- and 266-MHz MMX

processors and the MTXC controller, part of the Intel 430TX mobile chipset. The 4200 Family processor boards also include the electronic sensor that interfaces to the system

through the I

C bus.

1.8.4 Processor

The P54LM and the P55CLM Intel Pentium processors are fully compatible with the entire installed base of applications for DOS, Windows, and OS/2, branch predition, and separate code and data caches all provide increased performance over previous x86 processors. Reduced voltage operation and enhanced SL power management features provide significant power savings over other Pentium versions.

For the 4200 Family, the 233 MHz CPU core runs on a 1.8 V supply. The 266 MHz CPU core runs on a 2.0 V supply. The interface for the 4200 Family is 2.5 V to 3.3 V.

For the 4100 Family, the CPU core runs on a 2.9V supply for lower power operation, while the I/O buffers are powered at 3.3V for compatibility with the rest of the system.

1.8.5 System Memory

See Tables 1-1 and 1-2 for the system memory contained on models for the 4100 and 4200 Families. Up to 96-MB of expansion memory is available. Base memory is onboard memory built into the system I/O board. Expansion memory consists of memory expansion board kits available as user installable options.

1.8.6 Cache

The 4200 Family models have 256-KB or 512-KB of cache data RAM and 64-KB of cache tag RAM if populated on the PCB are mounted on the processor module.

The 4110-4160T models have 256-KB of cache data RAM and 32-KB of cache tag RAM if populated on the PCB are mounted on the processor module.

Product Description 1-19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.8.7 Local Bus Video

The standard Compaq Armada video subsystem consists of:

■

An internal LCD display.

■

One Megabyte frame buffer (Two Megabyte frame buffer for the 42210T and 4220T)

■

An inverter to supply AC power to the LCD back-light system

■

A standard external VGA connector for use with CRTs and other VGA compatible displays

■

32-KB of video ROM (44KB of video ROM for the 4210T aand 4220T)

■

NTSC/PAL encoder

1-20 Product Description

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Chapter 2

Troubleshooting

This chapter contains troubleshooting information for the computer and the convenience base. The basic steps in troubleshooting the computer include:

1. Completing the preliminary steps listed in Section 2.1.

2. Running the Power-On Self-Test (POST) as described in Section 2.2.

2. Running Computer Setup as described in Section 2.5

4. Running the Computer Checkup (TEST) as described in Section 2.5.

5. Performing the recommended actions described in the diagnostic tables in Section

2.6 if you are unable to exercise POST or Computer Checkup or if the problem persists after running POST and Computer Checkup.

Follow these guidelines when troubleshooting:

■

Complete the recommended actions in the order in which they are given.

■

Repeat POST and Computer Checkup after each recommended action until the problem is resolved and the error message does not return.

■

Once the problem is resolved, do not complete the remaining recommended actions.

■

Refer to Chapter 5 for any removal and replacement procedures.

■

If the problem is intermittent, check the computer or convenience base several times to verify that the problem is solved.

Use the following table for quick reference to troubleshooting information:

If You Want To: Run:

Check for POST error messages POST

Check that computer components are recognized and running properly

View information about the computer and installed or connected devices

Perform any of the following:

 Check the system configuration  Set the system power management

parameters

 Return the system to its original

configuration

 Check system configuration of installed devices

Computer Checkup (TEST) under Compaq Utilities

View System Information (INSPECT)under Compaq Utilities

Computer Setup

Troubleshooting 2-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Preliminary Steps

IMPORTANT: Use AC Power when running POST, Computer Setup, or Computer

Checkup. A low-battery condition could initiate Suspend or Hibernation and interrupt the test.

Before running POST and Computer Checkup, complete the following steps:

1. Obtain established passwords. If you must clear the passwords, go to Section 2.2.

2. Ensure that the hard drive is installed in the computer.

2. Ensure that the battery pack is installed in the computer and the AC power is connected to the computer and plugged into an AC power source.

4. Turn on the computer.

5. If a power-on password has been established, type the password and press Enter.

NOTE:

that QuickLock/QuickBlank has been initiated. Type the power-on password to exit QuickLock/QuickBlank. If the password is unknown, it must be cleared (see Section 2.2).

6. Run Computer Setup (Section 2.5).

7. Use the Hotkeys to adjust the contrast (Fn+F9) and brightness (Fn+F10) to the center

8. Turn off the computer and all external devices.

9. Disconnect any external devices that you do not want to test. If you want to use the

NOTE:

the problem could be with the external device or its cable. Isolate the problem by running POST with and without the external device connected.

10. Use Advanced Diagnostics and loopback plugs in the serial and parallel connectors

If you are running Diagnostics from the hard drive, complete the following steps:

The key icon appears on the display when the computer is turned on to indicate

of their ranges and leave the display open. On models with color TFT displays, contrast is not applicable.

printer to log error messages, leave it connected to the computer.

If a problem only occurs when an external device is connected to the computer,

if you plan to test these ports. You may run Advanced Diagnostics from the hard drive or from a diskette.

a. Turn on or restart the computer. b. Press F10 when the cursor appears in the upper right corner of the screen. If you

do not press F10 in time, restart the computer and try again. The Welcome screen appears.

2-2 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

If you are running Diagnostics from a diskette, complete the following steps:

a. Insert the Diagnostics diskette into the diskette drive and turn on the computer. b. At the Welcome Screen, press Enter to accept OK. c. Select Computer Checkup (TEST). d. Select Prompted Diagnostics after "Identifying System Hardware" completes.

e. Select Interactive Testing and follow the displayed instructions. Refer to Chapter 3 for the description and spare part number of the loopback plugs. After completing the preliminary steps, run POST (Section 2.3) and Computer Checkup

(Section 2.5).

2.2 Clearing the Power-On and Setup Passwords

The power-on password prevents use of the computer until the password is entered. The setup password prevents unauthorized changes to Computer Setup. To clear the passwords, you must remove all power from the system board. If you do not know the passwords, use the following procedure to clear the password:

1. Remove all battery packs from the battery bay and DualBay, if applicable.

2. Disconnect the AC power.

2. Remove the real time clock battery.

4. Wait five minutes.

5. Reconnect the AC power.

6. Restart the computer. During the Power-On Self Test (POST), a "162 System

Options not Set" message appears. (See Section 2.4 for additional POST error

messages).

7. Shut down the computer, then turn off the power again.

8. Replace the real time clock battery.

9. Install the battery pack(s).

10. Proceed with the troubleshooting procedures.

Troubleshooting

2-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Power-On Self Test (POST)

The Power-On Self-Test (POST) is a series of tests that run every time the computer is turned on. POST verifies that the system is configured and functioning properly

To run POST, complete the following steps:

1. Complete the preliminary steps. (Section 2.1).

2. Turn on the computer. If POST does not detect any errors, the computer beeps once or twice to indicate that

POST has run successfully and boots from the hard drive or from a bootable diskette if one is installed in the diskette drive.

2.4 POST Error Messages

This section contains typical error messages that may occur during the power-on selftest (POST).

If you receive an error message read the description and follow the recommended action or run Computer Checkup from the Diagnostics diskette. Information about running Computer Checkup is presented later in this chapter.

If POST detects an error, one of the following events occurs:

■

A message with the prefix "WARNING" appears informing you where the error occurred. The system pauses until you press F1 to continue.

■

A message with the prefix "FATAL" appears informing you where the error occurred. After the message, the system emits a series of audible beeps. The system then stops.

■

The system emits a series of audible beeps. The system then stops.

Warning messages indicate a potential problem exists such as a system configuration error. When F1 is pressed, the system should resume. You should be able to correct problems that produce WARNING messages.

IMPORTANT: When a WARNING message includes the prompt to "RUN SCU," run Computer Setup. (Computer Setup replaces the SCU utility.)

Fatal errors emit a beep and may display a FATAL message. Fatal errors indicate severe problems, such as a hardware failure. Fatal errors do not allow the system to resume. Some of the fatal error beep codes are listed at the end of this section.

2-4 Troubleshooting

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Table 2-1

Warning Messages

Message Description

Clock not ticking correctly The real-time clock is not ticking. Replace the real time clock

CMOS checksum invalid, run SCU CMOS RAM information has been corrupted and needs to be

reinitialized by running Computer Setup.

CMOS failure, run SCU CMOS RAM has lost power and needs to be reinitialized by running

Computer Setup.

Floppy controller failed The diskette drive controller failed to respond to the reset

command. Power - down the system and check all appropriate connections. If the diskette drive controller continues to fail, you may need to replace the system board.

Floppy disk track 0 failed The diskette drive cannot read track 0 of the diskette in the drive.

Try another diskette. If the problem persists, you may need to replace the diskette drive.

Floppy information invalid, run SCU The drive parameters stored in CMOS RAM do not match the

diskette drives detected in the system. Run Computer Setup.

Hard disk controller error The hard drive controller failed to respond to the reset command.

Check the drive parameters. Power down the system and check all appropriate connections.

Hardware info does not match video card, run SCU

Keyboard controller failure The keyboard failed the self-test command. Replace the keyboard.

Keyboard failure The keyboard failed to respond to the RESET ID command.

No interrupts from Timer 0 The periodic timer interrupt is not occurring. Press F1.

RAM parity error at location xxxx A RAM parity error occurred at the specified (hex) location.

ROM at xxxx (LENGTH yyyy) with nonzero checksum (zz)

Time/Date corrupt - run SCU The time and date stored in the real time clock have been

Unexpected amount of memory, run SCU

Hard disk xx failure (or error) A failure or an error occurred when trying to access the hard drive.

The video adapter type specified in CMOS RAM does not match the installed hardware. Run Computer Setup.

Press F1.

An illegal adapter ROM was located at the specified address. An external adapter (such as a video card) may be causing the conflict. Run Computer Setup.

corrupted, possibly by a power loss. Run Computer Setup.

The amount of memory detected by POST does not match the amount specified in CMOS RAM. Run Computer Setup.

Press F1 and continue.

Troubleshooting

2-5

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Table 2-2

Fatal Error Messages

Message Description Beep Code

CMOS RAM test failed A walking bit test of CMOS RAM location 0E (Hex) -

3F (Hex) failed.

DMA controller faulty A sequential read/write of the transfer count and

transfer address registers within the primary and secondary DMA controllers failed.

Faulty DMA page registers A walking bit read/write of the 16 DMA controller

page registers starting at location 80 Hex failed.

Faulty refresh circuits A continuous read/write test of port 61h found that

bit 4 (Refresh Detect) failed to toggle within an allotted amount of time.

Interrupt controller failed A sequential read/write of various Interrupt

Controller registers failed.

ROM checksum incorrect A checksum of the ROM BIOS does not match the

byte value at F000:FFFF.

RAM error at location xxxx RAM error occurred during memory test. None

Parity error at unknown location Parity error occurred. None

The following table lists some of the Fatal Error beep codes, along with the beep sequence (short, long, pause) and the meaning of the beeps.

Table 2-3

Fatal Error Beep Codes

Beep Code Beep Sequence Explanation Remedy

0 S-S-S-P-S-S-L-P The DMA page registers are

faulty.

1 S-S-S-P-S-L-S-P The refresh circuitry is faulty. Replace system board.

2 S-S-S-P-S-L-L-P The ROM checksum is incorrect. 1. Flash the ROM.

3 S-S-S-P-L-S-S-P The CMOS RAM test failed. Replace system board.

4 S-S-S-P-L-S-L-P The DMA controller is faulty. Replace system board.

5 S-S-S-P-L-L-S-P The interrupt controller failed. Replace system board.

6 S-S-S-P-L-L-L-P The keyboard controller failed. Replace system board.

7 S-S-L-P-S-S-S-P Graphics adapter is faulty. Replace system board.

8 S-S-L-P-S-S-L-P Internal RAM is faulty. Replace processor board.

S = Short, L = Long, P = Pause

Replace system board.

2.Replace system board.

2-6 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Compaq Utilities

Run the Compaq Utilities to view or test system information and installed or connected devices. Run Compaq Utilities from either the computer hard drive or from diskette.

If running Compaq Utilities from a diskette, note the following:

Use version 10.13c or later.



You will not be able to make a utilities diskette.



Use the Computer Setup diskette to run Computer Setup.



The Utilities menu includes the following:

Computer Setup



Computer Checkup (TEST)



View System Information (INSPECT)



Create Diagnostics diskette (hard drive only)



Manage Diagnostics Partition (diskette only)



If the problem persists, call for support. Follow these steps to prepare for the support call:

1. Run Computer Checkup and save the device list to a file and print or save the log of errors.

2. Run the View System Information (INSPECT) utility and print or save that information.

2. Have the files or the printed information available when calling for support.

2.5.1 Running Computer Setup

Computer Setup contains a group of utilities that give you an overall picture of the computer’s hardware configuration and aid in troubleshooting. Use these utilities to set custom features, such as security options, power conservation levels, and startup preferences.

A computer running Windows 95 automatically recognizes and configures the system for new devices. However, if there is a configuration problem, or you want to view or reset configuration settings, use Computer Setup.

Computer Setup provides two methods to view the computer’s configuration - by type or connection. The default method for viewing Computer Setup is by type.

Troubleshooting

2-7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Categories by type include:



System Features—security, power, boot management



Communication—ports, modem, other communication devices



Storage—storage-related devices such as hard drive or diskette



Input Devices—keyboard, mouse, and other input devices



Network—Network adapter, or other network-related devices (Available only when docked or when PC Card is installed



Audio—sound properties and audio device settings



Video—monitor video device resources



Other devices—devices that could not be categorized

Categories by connection include:



System Features—security, power, boot management



System Devices—keyboard, mouse, parallel and serial ports



ISA—ISA bus and related devices



PCI—PCI bus and connected devices



PC Card (PCMCIA) —PC Card bus and PC Card devices

2.5.2 Running Computer Checkup (TEST)

Computer Checkup (TEST) determines whether the various computer components and devices are recognized by the system and are functioning properly. You can display, print, or save the information generated by Computer Checkup.

Computer Checkup is installed on the hard drive. If the hard drive is nonfunctional, you can run it from a diskette.

NOTE:

keep them available for future needs. A current copy can be obtained from the Compaq Customer Support Center.

It is recommended that you make diskette copies of Computer Checkup and

2-8 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Computer Checkup

To run Computer Checkup from the hard drive, complete the following steps:

1. Close all applications and shut down the computer.

2. Turn off the computer.

2. Turn on the computer.

4. When the cursor moves to the right side of the screen, press F10.

A Welcome Screen is displayed that is followed by the Compaq Utilities main menu.

5. From the Compaq Utilities main menu, select Computer Checkup (TEST).

A diagnostics menu is displayed.

6. Select the option to view the device list.

A list of the installed hardware devices is displayed.

NOTE:

Computer Checkup does not detect all non-Compaq devices.

7. Verify that Computer Checkup correctly detected the installed devices.

If the list is correct, select OK. The Computer Checkup option menu is displayed

again.

If the list is incorrect, verify that the new devices are installed properly.

8. Select one of the following from the diagnostics menu:

■

Quick Check Diagnostics. Runs a quick, general test on each device with a minimal number of prompts. If errors occur, they display when the testing is complete. You cannot print or save the error messages.

■

Automatic Diagnostics. Runs an unattended, maximum testing of each device with minimal prompts. You can choose how many times to run the tests, to stop on errors, or to print or save a log of errors.

■

Prompted Diagnostics. Allows maximum control over testing the devices. You can choose attended or unattended testing, decide to stop on errors, or choose to print or save a log of errors.

9. Follow the instructions on the screen as the devices are tested. When testing is

complete, the Diagnostics menu appears.

10. Exit the Diagnostics menu. NOTE:

changes.

Exiting the Compaq Utilities menu restarts the computer and saves the

Troubleshooting

2-9

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11. Look up the Computer Checkup error codes that were displayed by referring to "Computer Checkup (TEST) Error Codes" and take the recommended action.

12. Rerun POST and Computer Checkup, taking the recommended actions in given order until the problem is solved and no error messages occur.

Computer Checkup (TEST) Error Codes

IMPORTANT:

Rerun Computer Checkup each time you complete a recommended action step. If the problem is resolved when POST and Computer Checkup are rerun (i.e., with no error codes) do not perform the remaining recommended action steps.

Computer Checkup (TEST) error codes occur if the system recognizes a problem while running Computer Checkup. These error codes help identify possible defective assemblies. Tables 2-4 through 2-14 list Computer Checkup error codes, a description of the error condition, and the recommended action for resolving the condition. For removal and replacement procedures for the computer, refer to Chapter 7. For removal and replacement procedures for the convenience base, refer to Chapter 8.

NOTE:

The error codes in the following tables are listed in an AYE-XX format, where: A or AA = Number that represents the faulty assembly. Y = Test or action that failed. XX = Specific problem.

2.5.3 View System Information (INSPECT)

The View System Information (INSPECT) utility provides information about the computer and installed or connected devices. You can display, print, or save the information.

Follow these steps to run INSPECT from the hard drive:

1. Turn on the external devices that you want to test. Connect the printer if you want to print the information.

2. Turn on or restart the computer.

2. Press F10 when the prompt appears in the right side of the display. The Compaq Utilities screen appears.

4. Select View System Information (INSPECT) from the Diagnostics menu.

5. Select the item you want to view from the following list:

System Memory

ROM Audio

Keyboard Operating system

System ports System files

System storage Windows files

Graphics Miscellaneous

2-10 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Follow the instructions on the screen to cycle through the screens, to return to the list and choose another item, or to print the information.

2.6 Diagnostic Error Codes

Diagnostic error codes occur if the system recognizes a problem while running the Compaq Diagnostic program. These error codes help identify possibly defective subassemblies.

Tables 2-4 through 2-14 list possible error codes, a description of the error condition, and the action required to resolve the error condition.

IMPORTANT:

Retest the system after completing each step. If the problem has been

resolved, do not proceed with the remaining steps. For assistance in the removal and replacement of a particular subassembly, see

Chapter 5, "Removal and Replacement Procedures."

Table 2-4

Processor Test Error Codes

Error Code Description Recommended Action

101-xx CPU test failed Replace the processor board and retest.

102-xx Coprocessor or Weitek Error

102-xx DMA page registers test failed Replace the system board and retest.

104-xx Interrupt controller master test failed

105-xx Port 61 error

106-xx Keyboard controller self-test failed

107-xx CMOS RAM test failed

108-xx CMOS interrupt test failed

109-xx CMOS clock test failed

110-xx Programmable timer load data test failed

112-xx Protected mode test failed

114-01 Speaker test failed

1. Check system configuration.

2.Verify cable connections to speaker.

2. Replace the system board and retest.

Troubleshooting

2-11

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Table 2-5

Memory Test Error Codes

Error Code Description Recommended Action

200-xx Memory machine ID test failed The following steps apply to error codes 200-xx and

202-xx:

202-xx Memory system ROM checksum failed

202-xx Write/Read test failed The following steps apply to error codes 202-xx

204-xx Address test failed 1.Remove the memory board and retest.

211-xx Random pattern test failed 2 Install a new memory board and retest.

214-xx Noise test failed

215-xx Random address test failed

Keyboard Test Error Codes

Error Code Description Recommended Action

300-xx Failed ID Test The following steps apply to error codes 300-xx

301-xx Failed Selftest/Interface Test 1.Check the keyboard connection. If disconnected,

302-xx Failed Individual Key Test 2. Replace the keyboard and retest.

304-xx Failed Keyboard Repeat Test 2. Replace the system board and retest.

1.Flash the system ROM and retest.

2.Replace the system board and retest.

through 215-xx:

Table 2-6

through 304-xx :

turn off the computer and connect the keyboard.

Table 2-7

Parallel Printer Test Error Codes

Error Code Description Recommended Action

401-xx Printer failed or not connected The following steps apply to error codes 401-xx

through 402-xx :

402-xx Failed Port Test 1. Connect the printer.

402-xx Printer pattern test failed 2. Check power to the printer.

2. Install the loop-back connector and retest.

4. Check port and IRQ configuration.

5. Replace the system board and retest.

2-12 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-8

Diskette Drive Test

Error Code Description Recommended Action

600-xx Diskette ID drive types test

failed 601-xx Diskette format failed 1. Replace the diskette media and retest. 602-xx Diskette read test failed 2.Check and/or replace the diskette power and signal

602-xx Diskette write, read, compare test failed 2.Replace the diskette drive and retest. 604-xx Diskette random read test failed 4.Replace the system board and retest. 605-xx Diskette ID media failed 606-xx Diskette speed test failed 609-xx Diskette reset controller test failed 610-xx Diskette change line test failed 697-xx Diskette type error 698-xx Diskette drive speed not within limits 699-xx Diskette drive/media ID error Run Computer Setup.

Serial Test Error Codes

Error Code Description Recommended Action

1101-xx Serial port test failed

Hard Drive Test Error Codes

Error Code Description Recommended Action

1701-xx Hard drive format test failed The following steps apply to error codes 1701-xx

1702-xx Hard drive read test failed 1.Run Computer Setup. 1702-xx Hard drive write/read/compare test

failed 1704-xx Hard drive random seek test failed 2.Replace the system board and retest. 1705-xx Hard drive controller test failed 1706-xx Hard drive ready test failed 1707-xx Hard drive recalibration test failed 1708-xx Hard drive format bad track test failed 1709-xx Hard drive reset controller test failed 1710-xx Hard drive park head test failed 1715-xx Hard drive head select test failed 1716-xx Hard drive conditional format test failed 1717-xx Hard drive ECC* test failed 1719-xx Hard drive power mode test failed 1724-xx Network preparation test failed 1736-xx Drive monitoring test failed

* ECC = Error Correction Code

The following steps apply to error codes 600-xx through 698-xx:

cables and retest.

Table 2-9

1. Check port configuration.

2.Replace the system board and retest.

Table 2-10

through 1736-xx :

2. Replace the hard drive and retest.

Troubleshooting

2-13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-11

Video Test Error Codes

Error Code Description Recommended Action

501-xx Video controller test failed

502-xx Video memory test failed

502-xx Video attribute test failed

504-xx Video character set test failed

505-xx Video 80 × 25 mode 9 × 14 character

cell test failed

506-xx Video 80 × 25 mode 8 × 8 character

cell test failed

507-xx Video 40 × 25 mode test failed

508-xx Video 320 × 200 mode color set 0 test

failed

509-xx Video 320 × 200 mode color set 1 test

failed

510-xx Video 640 × 200 mode test failed

511-xx Video screen memory page test failed

512-xx Video gray scale test failed

514-xx Video white screen test failed

516-xx Video noise pattern test failed

2402-xx Video memory test failed

2402-xx Video attribute test failed

2404-xx Video character set test failed

2405-xx Video 80 × 25 mode 9 × 14 character

cell test failed

2406-xx Video 80 × 25 mode 8 × 8 character

cell test failed

2408-xx

2409-xx Video 320 × 200 mode color set 1 test

failed

2410-xx Video 640 × 200 mode test failed

2411-xx Video screen memory page test failed

2412-xx Video gray scale test failed

2414-xx Video white screen test failed

2416-xx Video noise pattern test failed

2418-xx ECG/VGC memory test failed

The following apply to error codes 501-xx through 516-xx:

1. Connect and external monitor and retest.

2.Replace the LED status board and retest.

2. Replace the display and retest.

4. Replace the system board and retest.

The following steps apply to error codes 2402-xx through 2456-xx:

1. Run Computer Setup.

2. Disconnect external monitor and test with internal LCD display.

2.Replace the display assembly and retest.

4. Replace the system board and retest.

Continued

2-14 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-11

Continued

Error Code Description Recommended Action

2419-xx ECG/VGC ROM checksum test failed The following steps apply to error codes 2402-xx

through 2456-xx:

2421-xx ECG/VGC 640 × 200 graphics mode test

failed

2422-xx ECG/VGC 640 × 350 16 color set test

failed

2422-xx ECG/VGC 640 × 350 64 color set test

failed

2424-xx ECG/VGC monochrome text mode test

failed

2425-xx ECG/VGC monochrome graphics mode test

failed

2431-xx 640 × 480 graphics test failure

2432-xx 320 × 200 graphics (256 color mode) test

failure

2448-xx Advanced VGA Controller test failed

2451-xx 132-column Advanced VGA test failed

2456-xx Advanced VGA 256 Color

test failed

2458-xx Advanced VGA BitBLT test The following applies to error codes 2458-xx through

2468-xx Advanced VGA DAC test Replace the system board and retest.

2477-xx Advanced VGA data path test

2478-xx Advanced VGA BitBLT test

2480-xx Advanced VGA Linedraw test

1. Run Computer Setup.

2.Disconnect external monitor and test with internal LCD display.

2. Replace the display assembly and retest.

4. Replace the system board and retest.

2480-xx:

Table 2-12

Audio Test Error Codes

Error Code Description Recommended Action

3206-xx Audio System Internal Error Replace the audio board and retest.

Troubleshooting

2-15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-13

Pointing Device Interface Test Error Codes

Error Code Description Recommended Action

8601-xx Mouse test failed The following steps apply to 8601-xx and 8602-xx:

1. Replace the top cover assembly.

8602-xx Interface test failed 2. Replace the system board and retest.

Table 2-14

CD-ROM Test Error Codes

Error Code Description Recommended Action

3301-xx CD-ROM drive read test failed The following steps apply to error codes 3301-xx

through 3305-xx and 6600-xx through 6622-xx:

3305-xx CD-ROM drive seek test failed 1. Replace the CD and retest.

6600-xx ID test failed 2.Replace the CD-ROM drive and retest.

6605-xx Read test failed 2. Replace the system board and retest.

6608-xx Controller test failed

6622-xx Random read test failed

2-16 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Troubleshooting Without Diagnostics

This section provides information about how to identify and correct some common hardware, memory, and software problems. It also explains several types of common messages that may be displayed on the screen. The following pages contain troubleshooting information on:

■

Audio

■

Battery/Battery gauge

■

Diskette/Diskette drive

■

Hard drive

■

CD-ROM drive

■

Hardware installation

■

Infrared connection

■

Keyboard (Numeric keypad)

■

Pointing device

■

Memory

■

PC Card

■

Power

■

Printer

■

Screen (LCD and CRT)

■

Software

2.7.1 Solving Minor Problems

Some minor problems and possible solutions are outlined in the following tables. If the problem appears related to a software application, check the documentation provided with the software.

Solving Audio Problems

Some common audio problems and solutions are listed in the following table.

Table 2-15

Solving Audio Problems

Problem Probable Cause Solution(s)

Computer beeps once after you turn it on.

Computer does not beep after the Power-On Self-Test (POST).

This is typical; it indicates successful completion of the Power-On Self-Test (POST).

Speaker volume is off or has been turned down.

Beeps have been turned off.

No action is required.

If the speaker icon is not displayed on the display, press

Run Computer Setup and turn on beeps.

Fn+F5

to adjust the volume.

Troubleshooting

2-17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving Battery and Battery Gauge Problems

Some common causes and solutions for battery problems are listed in the following table. The "Solving Power Problems" section in this chapter also may be applicable.

Table 2-16

Solving Battery and Battery Gauge Problems

Problem Probable Cause Solution(s)

Computer won't turn on when battery pack is inserted and power cord is unplugged.

Computer is beeping and battery light is blinking.

Computer battery light blinks to indicate low- battery condition, but computer does not beep.

Battery light doesn't light and battery pack won't fast charge.

Computer turned off and information in memory was lost when replacing the battery pack.

Battery is discharged. Connect the computer to an external power

source and charge the battery pack.

Replace the battery pack with a fully charged battery pack.

Check the battery connectors on the system board to verify they are evenly spaced and that they are not bent or broken.

Battery charge is low. Immediately save any open file(s). Then do

any one of the following:

■

Connect the computer to an external power source to charge the battery pack.

■

Initiate Suspend and replace the battery pack with a fully charged battery pack.

■

Turn the computer off or initiate Hibernation until you can find another power source or charge the battery pack.

Low - battery beeps were turned off.

Volume is turned off or turned down too low.

Battery pack is already charged.

Battery pack was exposed to temperature extremes.

Battery pack is at end of its life.

The battery pack was not replaced.

Run Computer Setup to turn on the low battery warning beeps.

Fn+F5

Press adjust the volume.

No action is necessary.

Allow time for the battery pack to return to room temperature.

Replace battery pack.

Turn off the computer and restart.

to turn the speaker on and then

Continued

2-18 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continued

Table 2-16

Problem Probable Cause Solution(s)

Battery charge does not last as long as expected.

Battery pack is warm to the touch after charging.

Battery gauge is inaccurate. The battery pack is new or

Battery pack operating time is far less than the documented average operating time.

Battery is being exposed to high temperatures or extremely cold temperatures.

Battery has partially selfdischarged.

Power management is disabled.

An external device or PC Card is draining the battery.

Normal warming has occurred due to charging.

has not been used for a long period.

Power management is turned off or disabled.

An external device or PC Card is draining the battery.

Battery pack has partially self-discharged.

Fuel gauge is inaccurate. Use the low battery warning beeps to

Battery pack is being drained by high power-use accessory.

Battery pack is being exposed to high temperatures or extremely cold temperatures.

Keep the battery pack within the recommended temperature ranges.

Operating: 50°F to 104°F(10°C to 40°C) Storage: -4°F to 86°F (-20°C to 30°C )

Recharge the battery pack.

Recharge the battery. Discharge the battery completely and then recharge it.

Set a power management level in Computer Setup.

Turn off or disconnect external devices when not using them.

No action is required.

Fully charge the battery pack until the battery light on the computer turns off.

Condition the battery pack by fully charging, then fully discharging, and then fully recharging. If condition persists, replace the battery. If the battery gauge is still inaccurate, replace the system board.

Enable power management in Computer Setup and in Windows Power Properties. The power management icon should be visible on the status panel.

Turn off or disconnect external devices when not using them.

To maintain the charge, leave battery packs in the computer when it is connected to external power.

If the computer is disconnected from external power for more than two weeks, remove battery packs from the computer to reduce the discharge rate.

determine the low battery condition.

Reduce use of accessories which drain power such as the CD-ROM drive or PC Card.

Keep the battery pack within the recommended temperature ranges:

Operating: 50°F to 104°F(10°C to 40°C) Storage: -4°F to 86°F (-20°C to 30°C ).

Recharge the battery pack.

Troubleshooting

2-19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving Diskette and Diskette Drive Problems

Some common causes and solutions for diskette and diskette drive problems are listed in the following table.

Table 2-17

Solving Diskette and Diskette Drive Problems

Problem Probable Cause Solution(s)

Diskette drive light does not turn on.

Diskette drive light stays on. Diskette is damaged. Run SCANDISK on the diskette. At the

Diskette drive cannot write to a diskette.

Diskette drive cannot read a diskette.

Cannot boot from diskette. Bootable diskette is not in

Diskette drive is not installed properly.

Diskette is incorrectly inserted.

Software program is damaged.

Diskette is write-protected. Disable the diskette's write-protect feature

Computer is writing to the wrong drive.

Not enough space is left on the diskette.

Drive error has occurred. Run Computer Checkup from the Compaq

Diskette is not formatted. Format the diskette. At the system prompt,

The wrong type of diskette is being used.

Diskette has a bad sector. Copy files to hard drive or another diskette.

Drive error has occurred. Run Computer Checkup from the Compaq

Diskette is not formatted.

drive A.

Diskette Boot is disabled in Computer Setup.

Remove the diskette drive and install it properly.

system prompt, enter

SCANDISK A:

Remove diskette and reinsert.

Check the program diskettes.

or use a diskette that is not write-protected.

Check the drive letter in the path statement.

Use another diskette.

Diagnostics diskette.

enter

FORMAT A:

Use the type of diskette required by the drive.

Reformat bad floppy.

Diagnostics diskette.

Format the diskette. At the system prompt, enter

FORMAT A:

Put the bootable diskette in drive A. If a diskette drive is in the computer DualBay, that is drive A.

Run Computer Setup and enable Diskette Boot from the Boot Management menu.

2-20 Troubleshooting

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Solving Hard Drive Problems

Some common causes and solutions for hard drive problems are listed in the following table.

Table 2-18

Solving Hard Drive Problems

Problem Probable Cause Solution( s)

Reading hard drive takes an unusually long time after restarting the computer.

Hard drive error occurs. Hard drive has bad sectors or

Hard drive does not work. Hard drive is not seated

Solving CD-ROM Drive Problems

System entered Hibernation due to low-battery condition and is now exiting from it.

has failed.

properly.

Hard drive is damaged. Replace the hard drive.

Give the system time to restore the previously saved data to its exact state before Hibernation.

Run Computer Checkup.

See POST error messages.

Turn off the computer, remove and reinsert the hard drive, then turn the computer on.

Some common causes and solutions for CD-ROM drive problems are listed in the following table.

Table 2-19

Solving CD-ROM Drive Problems

Problem Probable Cause Solution( s)

CD-ROM drive cannot read a compact disc.

CD-ROM drive does not work.

Compact disc is upside down or is improperly inserted in the CD-ROM drive.

CD-ROM drive is not seated properly.

CD-ROM drive was inserted while the computer was on, in Suspend, or in Hibernation.

Open the CD loading tray, lay the compact disc in it (label side up), then close the tray.

Shut down the computer, remove and reinsert the drive, then turn on the computer.

Shut down computer; then turn it on again. The drive is initialized during power up.

Troubleshooting

2-21

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Solving Hardware Installation Problems

Some common causes and solutions for hardware installation problems are listed in the following table.

Table 2-20

Solving Hardware Installation Problems

Problem Probable Cause Solutions(s)

A new device is not recognized as part of the computer system.

Solving Infrared Connection Problems

Cable(s) of new external device are loose or power cables are unplugged.

Power switch of new external device is not turned on.

Device is not seated properly. Turn off the computer and reinsert the

Ensure that all cables are properly and securely connected.

Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system.

device.

Some common causes and solutions for infrared connection problems are listed in the following table.

Table 2-21

Solving Infrared Connection Problems

Problem Cause Solution(s)

Cannot link with another computer.

Data transmission problem. Direct sunlight, fluorescent

Interrupt request (IRQ) conflict. Check IRQ assignments for conflicts and

reassign as necessary.

Baud rate conflict. Select the same baud rate for both

computers.

Remove the interfering light sources. light, or flashing incandescent light is close to the infrared connections.

Interference from other wireless devices.

Physical obstruction. Do not place objects between the two units

Movement. Do not move either unit during data

Orientation. Adjust devices so that they point within

Distance. Verify that devices are not more than

Keep remote control units such as wireless

headphones and other audio devices away

from the infrared connections

that will interfere with a line-of-sight data

transmission.

30 degrees of each other.

3 feet (1 m) apart.

2-22 Troubleshooting

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Solving Keyboard/Numeric Keypad Problems

Some common causes and solutions for keyboard/numeric keypad problems are listed in the following table.

Table 2-22

Solving Keyboard/Numeric Keypad Problems

Problem Probable Cause Solution(s)

Embedded numeric keypad on computer keyboard is disabled.

Keyboard is locked. QuickLock initiated. Enter the password to exit QuickLock.

Num Lock function is not enabled.

Press the Num Lock function and embedded numeric keypad. The Num Lock icon on the status panel turns on.

Solving Pointing Device Problems

Some common causes and solutions for pointing device problems are listed in the following table.

Fn+NumLk

keys to enable the

Table 2-23

Solving Pointing Device Problems

Problem Cause Solution( s)

External pointing device does not work.

Integrated pointing device does not work.

Incorrect device driver or no device driver is installed.

The device driver is not installed in Windows.

An external pointing device is connected and the system has disabled the internal pointing device.

Install the device driver.

Install the device driver in Windows.

Initiate Suspend and disconnect the external pointing device.

Troubleshooting

2-23

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Solving Memory Problems

Some common causes and solutions for memory problems are listed in the following table.

Table 2-24

Solving Memory Problems

Problem Probable Cause Solution(s)

Memory count during PowerOn Self-Test (POST) is incorrect.

"Out of Memory" message is displayed on the screen or insufficient memory error occurs during operation.

Optional memory expansion board is installed incorrectly, is incompatible with the computer, or is defective.

System ran out of memory for the application.

Too many TSR (terminate and stay resident) applications are running.

Ensure that the optional memory expansion

board is installed correctly.

Check the application documentation for

memory requirements.

Install additional memory.

Remove from memory any TSR applications

that you do not need.

2-24 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving PC Card Problems

Some common causes and solutions for PC Card problems are listed in the following table.

Table 2-25

Solving PC Card Problems

Problem Probable Cause Solution(s)

PC Card error messages appear when the computer is turned on.

Computer does not beep when PC Card is inserted butt PC Card works correctly

When turned on, the computer does not beep when a PC Card is inserted.

The PC Card drivers (Socket Services, Card Services, Card ID) fail with error messages when the computer is turned on.

PC Card modem, fax, or network card does not work.

The PC Card slot is disabled. Run Computer Setup and enable the PC

Card slots on the Security Menu.

System beeps are turned down.

Card is not inserted properly

PC Card beeps are disabled.

Speaker is turned off or volume is turned down.

PC Card drivers are not installed.

The PC Card slots are disabled.

Card or card driver is not supported.

The PC Card slot is disabled. Run Computer Setup and select the Security

Card is not fully inserted into the slot or is not inserted properly.

Telephone cord is not plugged in all the way.

Necessary drivers are not installed (turned on).

Press Fn+F5, then press the right arrow key to increase the system beeps volume.

In Windows 95, double-click PC Card icon, click the Global Settings tab. Deselect Disable PC Card Sound Effects.

Increase the volume.

Double-click the Add New Hardware icon in the Control Panel for installation instructions.

Run Computer Setup and then select the Security menu to enable PC Card slots.

Check the list of PC Cards tested successfully in Compaq PC Card platforms.

menu to enable PC Card slots.

Ensure the card is inserted in the correct orientation.

Check and secure telephone connection.

Install drivers.

Continued

Troubleshooting

2-25

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-25

Continued

Problem Probable Cause Solution(s)

PC Card modem or fax card

does not work.

Modem network PC Card does not work.

Memory or storage card does not work.

You are trying to access the card using the wrong COM port.

The card conflicts with a serial device.

The card is not supported. Use supported cards only.

Network driver is not installed or is not set up properly.

Telephone cord is not properly connected.

SRAM and flash memory cards require the memory card driver to be loaded (turned on).

Flash memory cards require the Microsoft FlashFile System to be loaded.

Hard drives on flash mass storage cards require the PC Card ATA driver to be loaded.

You are trying to access the hard drive card using the wrong drive letter.

The card is not supported.

See Chapter 9 to verify COM port.

See Chapter 9 to verify address.

Install driver.

Verify telephone connection.

Install driver.

Double-click My Computer to verify the drive letter assigned to the card.

Check the list of PC Card cards tested successfully in Compaq PC Card platforms.

2-26 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving Power Problems

Also see "Solving Battery and Battery Gauge Problems" in this chapter.

Table 2-26

Solving Power Problems

Problem Probable Cause Solution(s)

Computer won't turn on and LEDs aren't lit.

Computer turned off while it was left unattended and the power /suspend light is off.

Computer initiated Suspend automatically or turned off automatically when it was docked in expansion base.

Computer is not connected to a power source.

Power cords to the external power source are unplugged.

DC-DC Converter is defective. Replace the DC-DC power board.

Integrated AC Power is defective. Replace the integrated AC Power and restart.

System initiated Hibernation due to a critical low-battery condition.

System initiated Hibernation after a preset timeout.

The unit temperature was exceeded.

Insert battery or connect an external power source.

Ensure that power cords connecting the computer and the external power source are plugged in properly.

Replace the battery pack with a fully charged battery pack or connect the computer to an external power source. Then turn on the computer.

Turn on the computer.

NOTE: To change the Hibernation setting in Windows 95, click the Hibernation tab in Power properties. Windows NT, run Computer Setup and select Power Management.

Computer is in an exceedingly hot environment. Let the computer cool down.

Make sure the ventilation intake and exhaust are not obstructed.

Troubleshooting

2-27

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Solving Printer Problems

If you experience problems printing, run a printer self-test. Refer to the documentation provided with the printer for instructions. If the self-test fails, it is a printer-specific problem. Also refer to the printing section of the application documentation.

Table 2-27

Solving Printer Problems

Problem Probable Cause Solution(s)

Printer will not turn on. The signal cable may not be

connected properly, or the printer is unplugged.

Printer will not print. Printer is not turned on or is

off line.

The device drivers for the application are not installed.

Printer that is set up for a network is not connected to the network.

Printer cable is too long, unshielded, or defective.

Paper tray is empty. Fill the paper tray with paper and set the

Printer prints garbled information.

Correct printer drivers are not installed.

Cable is not connected properly.

Cable is defective. Replace the printer cable and retest.

Ensure that the signal cable is properly connected and that the power cord is connected to the electrical outlet.

Turn the printer on and set it to on-line.

Refer to the printer documentation to install the correct printer driver.

Connect the printer to the network.

Replace the cable.

printer to on-line.

Refer to the printer documentation to install the correct printer driver.

Ensure that the printer signal cable is properly connected to the computer.

Solving Screen Problems

This section lists some common causes and solutions for computer display and external monitor problems.

You can perform a monitor self-test on an external VGA color or monochrome monitor by disconnecting the monitor from the computer. To do so, complete the following steps:

1. Turn off the monitor.

2. Turn off the computer.

2. Disconnect the monitor signal cable from the computer.

4. Turn on the monitor and allow it to warm up for one minute. The screen should be white. A narrow black border may also appear on the left and

right sides of the display. Either of these displays indicates that the monitor is working properly.

2-28 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-28

Solving Screen Problems

Problem Probable Cause Solution(s)

Characters are dim. The brightness or contrast

Screen is blank. You initiated QuickLock/

Computer screen is blank and the screen on an external monitor displays information.

Screen is blank and the power/suspend light is blinking

Screen is blank, the power/ suspend light is blinking, and the battery light is blinking

External monitor does not display information

Distorted or garbled characters on the screen are mixed with text.

Garbled characters on internal display or flashing internal display when connected to external monitor.

(if applicable) control is not set properly.

Computer screen is in direct light. Tilt the display or move computer. Display is damaged. Replace the display.

QuickBlank. You may have another screen -

blanking utility installed. Screen save was initiated after

the Power Management timeout period of inactivity

If an STN screen is used, brightness/ contrast needs adjusting.

Screen has overheated If the computer is in direct sunlight,

Suspend was initiated. Press the suspend button to exit

Display was switched to the external monitor.

System is in Suspend Press the Suspend button to exit

System has entered a low-battery condition

External monitor was connected after the computer was turned on

The external monitor signal cable or power cord is not properly connected.

ANSI.SYS

The

CONFIG.SYS

incorrect. You are using 800 × 600 or higher

resolution on external display and have toggled back to internal display, which only supports 640 × 480 resolution.

driver is not in the

file or the path is

Adjust the control(s)using (contrast) and

Enter the password to exit QuickLock/QuickBlank.

Press any key and/or enter the password.

Press any key or click the mouse.

Use the hotkeys to adjust the brightness/contrast.

move it an allow it to cool.

Suspend. Press the

information on the computer screen.

Suspend. Enter the power-on password if prompted.

Immediately connect the computer to an external power source or replace the battery pack.

Press the the external monitor

Verify the cables are properly connected.

Add the

CONFIG.SYS

line: DEVICE=C:\ANSI.SYS Restart the computer. If

simultaneous display is desired, use 640 × 480 resolution.

Fn+F10

Fn+F4

hotkey to display

Fn+F4

hotkey to switch to

ANSI.SYS

file. Add the following

Fn+F9

(brightness).

driver to the

Continued

Troubleshooting

2-29

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-28

Continued

Problem Probable Cause Solution(s)

The image on the external monitor does not fill the screen.

Small red, green, or blue spots appear on the computer TFT display.

When in MS-DOS mode, the image on the computer display does not fill the screen.

When displaying simultaneously, the image on the external monitor may not be centered.

You are using an external monitor and simultaneously displaying an image on the computer display.

Small spots, called on-pixels, often appear on TFT screens. Compaq limits the number of these on-pixels to 0.003% of the approximately 1 million transistors that are on a

12.1-, or 11.2-inch display. To maintain a high-quality image,

the 800 × 600 models do not stretch the lower-resolution image of MS-DOS mode to fill the screen.

This is typical; no action is required.

Solving Software Application Problems

Most software application or installation problems occur as a result of one or more of the following:

■

The application was not installed correctly.

■

Memory was not allocated correctly.

■

A conflict exists between applications.

Table 2-29

Solving Software Application Problems

Problem Probable Cause Solution( s)

Cannot use an application. The application has not been

added to the PATH statement.

Insufficient memory to run application.

System ran out of memory for the application.

Too many TSR (terminate and stay resident) applications are running.

Application requires Windows to be run in enhanced mode.

Run the program with the full path name.

Check the application documentation for memo requirements.

Install additional memory.

Remove from memory any TSR applications tha you do not need.

Exit Windows and enter again using the followin command to run in enhanced mode: WIN/3

2-30 Troubleshooting

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Solving Convenience Base Problems

Table 3-30

Display Problems and Solutions

Problem Possible Cause Solution(s)

Garbled characters on internal display or flashing internal display when connected to external monitor.

External monitor display is distorted.

Computer screen and external monitor do not display information simultaneously.

Toggled to internal monitor from an external monitor that is using higher resolution than that supported by the computer.

Energy Star Monitor is selected on the Power Management menu, and the external monitor is not Energy Star compliant.

Display was switched using the hotkeys.

External monitor was not turned on before the system was turned on.

External monitor was connected after the computer was turned on.

Restart the system. If simultaneous display is desired, use the resolution supported by the computer.

Press any key or move the mouse to restore the display. If the display remains distorted, turn the monitor off and then back on. Deselect the Energy Star Monitor setting.

Press the display possibilities.

Initiate Suspend, turn on external monitor, then exit Suspen to integrate new monitor.

Initiate Suspend, connect external monitor, turn on the monitor, then exit Suspend.

hotkeys to toggle through the three

Fn+F4

Table 3-31

Docking Problems and Solutions

Problem Possible Cause Solution(s)

The computer is not properly docked in the convenience base.

The computer is not properly centered over docking latch.

The computer is not coupled to docking connector.

Slide computer forward from convenience base. Center over docking latch and replace. Push docking lever back to dock.

Pull docking lever forward to release computer and re-dock.

Table 3-32

Undocking Problems and Solutions

Problem Possible Cause Solution(s)

The computer will not undock.

Connectors are tight. Grasp the computer with one hand and pull forward while

pulling forward on docking lever with other hand.

Security cable is locked. Unlock security cable.

PC Card cable is attached to the computer.

The docking lever in the convenience base may be defective.

Remove cable from PC Cards before undocking.

Replace the Convenience Base.

Troubleshooting

2-31

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-33

External Device Installation Problems and Solutions

Problem Possible Cause Solution(s)

new device is not recognized as part of the computer system.

Problem Possible Cause Solution(s)

External keyboard does not work.

Power switch of the new external device was not turned on before the system was turned on.

External device was connected after system was turned on.

The signal cable or power cord of the new device is loose or disconnected.

The signal cable or power cord of the new device may be defective.

Table 3-34

Keyboard Problems and Solutions

External keyboard may not be securely connected or may be connected to an incorrect external connector.

Initiate Suspend, turn on external devices with power switches, then exit Suspend to integrate the new device.

Windows 95: Initiate Suspend, plug in and turn on external devices with power switches, then exit Suspend to integrate the new device.

Windows NT: Power off computer and external devices. Power back on to integrate new device.

Ensure that all cables are properly and securely connected.

Ensure that all power cords are properly and securely plugged into an electrical outlet.

Try connecting a different signal cable and/or power cord.

Ensure that the external keyboard is properly and securely connected to the external keyboard connector.

Table 3-35

Mouse Problems and Solutions

Problem Possible Cause Solution(s)

External mouse does not work.

External mouse may not be securely connected or may be connected to an incorrect external connector.

Mouse was connected after system was turned on.

Ensure that the external mouse is securely connected to the mouse connector or the correct external connector.

Turn off the unit, connect the mouse, then turn the unit on to integrate the mouse.

2-32 Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving Network Problems

This section provides guidelines for troubleshooting common Ethernet network problems. Refer to these guidelines when you have determined that the computer in the convenience base is not communicating with the network. These guidelines do not discuss the process of debugging the network cabling.

These are common problems to check first. Refer to the tables on the following pages for additional problems and solutions.

■

Ensure that the cabling is securely attached to the convenience base. A loose cable is the most common cause of network problems. If the cable is loose, secure it and see if the computer can communicate with the network.

■

Determine whether the current computer or another computer has communicated with the network from the convenience base. If so, determine whether anything was added or changed that could have stopped the network interface from working.

■

Run Diagnostics before installing the network drivers to verify that the network interface is working correctly.

Table 3-36

Solving Ethernet Network Problems

Problem Possible Cause Solution( s)

When turned on, the computer does not detect the network.

fter installing network operating system, computer does not detect network interface.

The computer is not connected to the Ethernet network.

Suspend or Hibernation was initiated.

The network driver fails to load during system initialization.

If using a network interface card connected to a parallel port, the port has been disabled.

Suspend or Hibernation was initiated.

Connect the computer to the Ethernet network.

Exit Suspend or Hibernation.

Windows 95: Restart the computer by clicking Start, Shut Down, Restart the Computer.

Windows NT: Click Start, Shut Down. Power the computer back on.

Ensure that network drivers are loaded and that the drive path is correct.

Enable the parallel port. Restart the computer. Press F10 immediately when the cursor moves to the top right side of the screen.

Exit Suspend or Hibernation.

Windows 95: Restart the computer by clicking Start, Shut Down, Restart the Computer.

Windows NT: Click Start, Shut Down. Power computer back on.

Continued

Troubleshooting

2-33

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Solving Ethernet Network Problems

Continued

Problem Possible Cause Solution( s)

Diagnostics reports a failure.

Diagnostics reports no errors, but the computer does not communicate with the network.

The computer stopped communicating with the network after exiting Suspend.

The computer stopped communicating with the network for no apparent reason.

The cable is not securely connected to the network connector on the Ethernet network.

There is a problem with the cable or a device at the other end of the cable.

Possible hardware failure. Replace the Convenience Base.

Network drivers are not loaded.

A network configuration error may have occurred (i.e., *.ini, *.inf, *.nif, or may need to be modified).

Suspend or Hibernation was initiated.

The computer does not detect network drivers.

The cable is not securely connected to the network connector on the Ethernet.

General network failure.

The files for the network drivers have been corrupted.

CONFIG.SYS

Ensure that the cable is securely connected to the proper network connector on the Ethernet network.

Ensure that the cable and device at the other end of the network connection are operating properly.

Load the network drivers.

Windows 95: Restart the computer by clicking Start, Shut Down, Restart the Computer.

Windows NT: Click Start, Shut Down. Power the computer back on.

Contact the network administrator.

files

Exit Suspend or Hibernation.

Windows 95: Restart the computer by clicking Start, Shut Down, Restart the Computer.

Windows NT: Click Start, Shut Down. Power computer back on.

Windows 95: Restart the computer by clicking Start, Shut Down, Restart the Computer.

Windows NT: Click Start, Shut Down. Power computer back on.

Ensure that the cable is securely connected to the convenience base and Ethernet network.

Ensure that the network you are connected to is running and has not experienced problems that would prevent the connection.

Reinstall the network drivers.

IMPORTANT:

module before returning the convenience base for replacement.

2-34 Troubleshooting

If the 100BaseT Ethernet upgrade module has been installed, remove this

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3

Illustrated Parts

This chapter provides illustrated parts and references for spare parts for the Compaq Armada 4100 and 4200 Families. To review an illustrated parts breakdown of the computers, refer to the Illustrated Parts Map that comes with this guide.

Illustrated Parts 3-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 System Unit

Figure 3-1.

System Unit

3-2 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-1

System Unit

Item Description Spares Part Number

1* CPU cover (Belgian) 290865-181

2* CPU cover (Brazilian) 290865-201

3* CPU cover (Danish) 290865-081

4* CPU cover (French) 290865-051

5* CPU cover (French Canadian) 290865-121

6* CPU cover (German) 290865-041

7* CPU cover (Hangeul) 290865-AB1

8* CPU cover (Int) 290865-002

9* CPU cover (Italian) 290865-061

10* CPU cover (Japanese) 290865-291

11* CPU cover (Latin American Spanish) 290865-161

12* CPU cover (Norwegian) 290865-091

13* CPU cover (Portuguese) 290865-131

14* CPU cover (Spanish) 290865-071

15* CPU cover (Swedish/Finnish) 290865-101

16* CPU cover (Swiss) 290865-111

17* CPU cover (Thai) 290865-AB1

18* CPU cover (UK English) 290865-031

19 CPU cover (US/Canada) 290865-001

20 Touchpad 218078-001

21 Clutch cover assembly (includes) 258620-001

Clutch cover

* Microphone

* Microphone housing

* Ir lens

22 Heatsink assembly (includes) 258632-001

Heatsink

* Thermal pad

23 Heatpipe assy, CPU board 287310-001

Continued

Illustrated Parts 3-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-1

Continued

Item Description Spares Part Number

24 CPU base assembly (includes) 258626-001

CPU base

* Expansion door

* Foot (3 ea)

* Foot (1 ea)

25 Magnesium frame assembly (includes) 258619-001

* Right speaker gasket

* Front cover

* Right cover

** Upper PCMCIA door

** Lower PCMCIA door

** Upper PCMCIA door spring

** Lower PCMCIA door spring

** Diskette eject hook

** Diskette eject button

* Eject shoulder screw

** Eject module spring

** Latch module spring

** Display ground bracket

** Front foot

* Hard drive insulator

26 Clutch kit (includes) 258621-001

Left clutch assembly

Right clutch assembly

27 Handle assembly 258618-001

28 Diskette Drive 290837-001

* Not illustrated **Included in Small Mechanical Parts Kit #258607-001

3-4 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-2.

System Unit (continued)

Illustrated Parts 3-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Mass Storage Devices

Figure 3-3.

Mass Storage Devices

3-6 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-2

Mass Storage Devices

Item Description Spares Part Number

1 3.5-inch, 1.44-MB, diskette drive 258611-001

2 630-MB hard drive 258612-001

3 810-MB hard drive 258614-001

*4 1.08-GB hard drive 258616-001

*5 1.4-GB hard drive 259263-001

*6 1.6-GB hard drive 287290-001

*7 2-GB hard drive 287207-001

*8 3-GB hard drive 290810-001

*9 4-GB hard drive 290811-001

* Not illustrated

Illustrated Parts 3-7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Cables and Power Cords

Figure 3-4.

Cables

3-8 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-3

Cables and Power Cords

Item Description Spares Part Number

1* AC Power cord (Australia/New Zealand) 246959-011

2* AC Power cord (Denmark) 246959-081

3* AC Power cord (Europe) 246959-021

4* AC Power cord (Italy) 246959-061

5* AC Power cord (Japan) 246959-291

6* AC Power cord (Korea) 246959-AD1

7** AC Power cord (Switzerland) 246959-AG1

8* AC Power cord (UK and Singapore) 246959-031

9 AC Power cord (US/Canada) 246959-001

10 Diskette drive cable, parallel port to

external drive unit (External Diskette Drive Bay)

11* Cable for SpeedPaq 288 Telephony

modems

Australia 234409-011

Belgium 234409-181

Denmark 234409-081

Finland 234409-351

France 234409-051

Germany 234409-041

Italy 234409-061

Korea 234409-AD1

Netherlands 234409-331

Norway 234409-091

Singapore, Thailand, Malasia 234409-AF1

Spain 234409-071

Sweden 234409-101

Switzerland 234409-111

UK 234409-031

US/Canada 234409-001

* Not illustrated

258575-001

Illustrated Parts 3-9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Standard and Optional Boards

Figure 3-5.

Standard and Optional Boards

3-10 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-4

Standard and Optional Boards

Item Description Spares Part Number

1 Processor board, 75-MHz CPU 258627-001

2* Processor board, 100-MHz CPU with L2

cache

3* Processor board, 120-MHz CPU with L2

cache

4* Processor board, 133-MHz CPU with L2

cache

5* Processor board, 150-MHz MMX CPU with

L2 cache

6* Processor board, 166-MHz MMX CPU with

L2 cache

7* Processor board, 200-MHz CPU with L2

cache

8* Processor board, 233-MHz CPU with L2

cache

9* Processor board, 266-MHz CPU with L2

cache

10* System Board, 8-MB RAM (includes Left

speaker gasket, battery shroud

11* System Board, 16-MB RAM (includes) Left

speaker gasket, battery shroud

12* System Board, 32-MB RAM (includes) Left

speaker gasket, battery shroud

13* Memory board (DIMM), 4-MB, 70 ns,

nonparity (2 ea)

14* Memory board (DIMM), 8-MB, 70 ns,

nonparity (2 ea)

15* Memory board (DIMM), 16-MB, 70 ns,

nonparity (2 ea)

16* Memory board (DIMM), 32-MB, 70 ns,

nonparity (2 ea)

17* Netelligent 56K PC Card Fax Modem

(North America)

* Not illustrated

258628-001

258629-001

258630-001

287286-001

287287-001

290827-001

290828-001

290830-001

258631-001

287288-001

290829-001

218069-001

218070-001

218071-001

218072-001

295050-001

Illustrated Parts 3-11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Display Assembly

Figure 3-6.

Display Assembly

3-12 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-5

Display Assembly

Item Description Spares Part Number

1 10.4-inch CSTN display assembly 258608-001

2* 11.3-inch CSTN display assembly 258609-001

3* 11.8-inch CTFT display assembly 258610-001

4 12.1-inch CSTN display assembly 287283-001

5* 12.1-inch CTFT display assembly 290766-001

* Not illustrated

Illustrated Parts 3-13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 Options

Figure 3-7.

3-14 Illustrated Parts

Options

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-6

Options

Item Description Spares Part Number

1 Trackball 246970-001

2 Mobile CD Expansion Unit 218073-001

3 Convenience base (pass thru) US 218075-001

4* Convenience base (Ethernet) US 218074-001

5 Convenience base adapter 258541-001

6 AC adapter without power cord (for

domestic and international use)

7 External battery charger 218076-001

8 Automobile adapter 218079-001

9 Li-ion modular battery pack 218077-001

10* Li-ion handle battery pack 246957-001

11 NiMH handle battery pack 258509-001

12* Portfolio Carrying Case 246958-001

13* USB Cardbus PC Card 296501-001

* Not illustrated

246960-001

Illustrated Parts 3-15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.8 Miscellaneous Parts

Figure 3-8.

3-16 Illustrated Parts

Miscellaneous Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-7

Miscellaneous Parts

Item Description Spares Part Number

Small mechanical parts kit (includes) 258607-001

1 Upper PCMCIA door

2 Upper PCMCIA door spring (5 ea)

3 Lower PCMCIA door

4 Lower PCMCIA door spring (5 ea)

5 Diskette eject hook

6 Diskette eject button

7 Display ground bracket

8 Memory cover

9 DualBay latch spring (1 ea)

10 DualBay eject spring (1 ea)

11 Rear foot (3 ea)

12 Front foot (1 ea)

13 Processor board shield

14* Screw kit (For 5 units. See table 3-8 for

contents and where-used matrix)

15* Tool kit (includes connector removal tool,

loop back plugs, and case utility tool)

16 Real-Time clock battery 258634-001

PCMCIA rail kit (includes) 258818-001

17a Top PCMCIA button

17b Bottom PCMCIA button

17c PCMCIA assembly

* Not illustrated

258819-001

100767-001

Illustrated Parts 3-17

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-8

Miscellaneous Screw Kit Contents and Use (258819-001)

Description Size Quantity Where Used

CPU aligning socket 7 mm socket 10 expansion connector

Shoulder screw, diskete eject T8/Slotted 5 diskette drive eject mechanism

4-40 × 5/16-inch screwlock 3/16 socket 30 I/O connectors at rear of unit

M2 × 0.4 × 4.0 mm T8/Slotted 10 secures hard drive to magnesium frame

M2 × 0.4 × 12.0 mm T8/Slotted 10 secures PCMCIA assembly

M2.5 × 0.45 × 6.5 mm T8/Slotted 45 secures processor board shield

secures heatsink to system board

secures system board to magnesium frame

M2.5 × 0.45 × 21.0 mm T8/Slotted 20 secures front cover

secures CPU cover/keyboard to magnesium frame

M2.5 × 0.45 × 7.5 mm T8/Slotted 25 secures plastic to clutches

secures base plastic to magnesium frame

M3 × 0.5 × 8.0 mm T8/Slotted 10 secures clutches to display assembly

3.8 Shipping Boxes

Table 3-9

Shipping Boxes

Description Spares Part Number

Shipping Carton (5 ea) 213623-001

Shipping Carton w/packing (1 ea) 213619-001

Shipping Carton, display (1 ea) 213620-001

3-18 Illustrated Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.9 Documentation

Table 1-10

Documentation

Description Spare Part Number

rmada 4100 Family Illustrated Parts Map (10 ea)

rmada 4200 Family Illustrated Parts Map (10 ea)

rmada 4100 Family Quick Setup poster and Reference Guide

rmada 4200 Family Quick Setup poster and Reference Guide

258623-001

258624-002

258625-001

258625-002

Illustrated Parts 3-19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3

Illustrated Parts 3-20

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4

Removal and Replacement Preliminaries

This chapter provides general service information for the Compaq Armada 4100 and 4200 Families.

Adherence to the procedures and precautions described in this chapter is essential for proper service.

4.1 Electrostatic Discharge

A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt or heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not be affected at all and will work perfectly throughout a normal cycle. Or it may function normally for a while, then degrade in the internal layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.

4.1.1 Generating Static

Table 4-1 shows how different activities generate static electricity and at different electrostatic voltage levels.

Table 4-1

Typical Electrostatic Voltages

Relative Humidity

Event 10% 40% 55%

Walking across carpet 35,000 V 15,000 V 7,500 V

Walking across vinyl floor 12,000 V 5,000 V 3,000 V

Motions of bench worker 6,000 V 800 V 400 V

Removing DIPS from plastic tubes 2,000 V 700 V 400 V

Removing DIPS from vinyl trays 11,500 V 4,000 V 2,000 V

Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V

Removing bubble pack from PCBs 26,000 V 20,000 V 7,000 V

Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V

NOTE:

700 volts can degrade a product.

Removal and Replacement Preliminaries 4-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.2 Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage:

■

Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.

■

Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.

■

Place items on a grounded surface before removing them from their container.

■

Always be properly grounded when touching a sensitive component or assembly.

■

Place reusable electronic-sensitive parts from assemblies in protective packaging or conductive foam.

Use transporters and conveyors made of antistatic belts and metal roller bushings. Mechanized equipment used for moving materials must be wired to ground and proper materials selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate electric charges.

4.1.3 Removing Batteries

Compaq recommends that you remove all batteries from the computer before beginning the disassembly procedures. Failure to do so could cause damage to computer components.

4-2 Removal and Replacement Preliminaries

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.4 Preventing Damage to Drives

To prevent static damage to hard drives, use the following precautions:

■

Handle drives gently, using static-guarding techniques.

■

Store drives in the original shipping containers.

■

Avoid dropping drives from any height onto any surface.

■

Handle drives on surfaces that have at least one inch of shockproof foam.

■

Always place drives with the PCB assembly-side down on the foam.

4.1.5 Grounding Methods

The method for grounding must include a wrist strap or a foot strap at a grounded workstation. When seated, wear a wrist strap connected to a grounded system. When standing, use footstraps and a grounded floor mat.

Table 4-2

Static-Shielding Protection Levels

Method Voltages

ntistatic plastic 1,500

Carbon-loaded plastic 7,500

Metallized laminate 15,000

Removal and Replacement Preliminaries 4-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.6 Grounding Workstations

To prevent static damage at the workstation, use the following precautions:

■

Cover the workstation with approved static-dissipative material. Provide a wrist strap connected to the work surface and properly grounded tools and equipment.

■

Use static-dissipative mats, heel straps, or air ionizers to give added protection.

■

Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle them only at static-free workstations.

■

Avoid contact with pins, leads, or circuitry.

■

Turn off power and input signals before inserting and removing connectors or test equipment.

■

Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.

■

Keep work area free of non-conductive materials such as ordinary plastic assembly aids and Styrofoam.

■

Use field service tools, such as cutters, screwdrivers and, vacuums, that are conductive.

■

Use a portable field service kit with a static dissipative vinyl pouch that folds out of a work mat. Also use a wrist strap and a ground cord for the work surface. Ground the cord to the chassis of the equipment undergoing test or repair.

4.1.7 Grounding Equipment

Use the following equipment to prevent static electricity damage to the equipment: Wrist Straps are flexible straps with a minimum of 1 megohm +/- 10% resistance to

the ground cords. To provide proper ground, a strap must be worn snug against the skin. On grounded mats without banana-plug connectors, connect a wrist strap with alligator clips.

Heel straps/Toe straps/Bootstraps can be used at standing workstations and are compatible with most types of boots and shoes. On conductive floors or dissipative floor mats, use straps on both feet with a minimum of 1 megohm resistance between operator and ground. To be effective, the conductive strips must be worn in contact with the skin.

4-4 Removal and Replacement Preliminaries

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.8 Recommended Materials and Equipment

Other materials and equipment that are recommended for use in preventing static electricity include:

■

Antistatic tape

■

Antistatic smocks, aprons, or sleeve protectors

■

Conductive bins and other assembly or soldering aids

■

Conductive foam

■

Conductive table-top workstations with ground cord of 1 megohm of resistance

■

Static dissipative table or floor mats with hard tie to ground

■

Field service kits

■

Static awareness labels

■

Wrist straps and footwear straps providing 1 megohm +/- 10% resistance

■

Material handling packages

■

Conductive plastic bags

■

Conductive plastic tubes

■

Conductive tote boxes

■

Metal tote boxes

■

Opaque shielding bags

■

Transparent metallized shielding bags

■

Transparent shielding tubes

Removal and Replacement Preliminaries 4-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Service Considerations

Listed below are some considerations to keep in mind during the disassembly and assembly of the computer.

4.2.1 Tool Requirements

■

Torx T-8 screwdriver

■

Flat-bladed screwdriver

■

Tool kit, Compaq part number 100767-001 (includes case utility tool, connector removal tool, and loop back plugs)

■

7-mm socket wrench

■

3/16-inch socket wrench

■

Preloaded application diskettes

4.2.2 Cables and Connectors

Apply only the tension required to seat or unseat the cables during insertion or removal from connectors. Handle cables by the connector or pull tabs whenever possible. In all cases, avoid bending, twisting, or tearing the cables, and ensure that cables are placed in such a way that they cannot be caught or snagged by parts being removed or replaced.

CAUTION:

When servicing these computers, ensure that cables are placed in their proper location during the reassembly process. Improper cable placement can cause severe damage to the unit.

4.3 Serial Number

The computer serial numbers should be provided to Compaq whenever requesting information or ordering spare parts. The serial number is located on the bottom of the CPU on the left front corner.

4-6 Removal and Replacement Preliminaries

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 5

Removal and Replacement Procedures

This chapter presents the removal and replacement procedures for both the 4100 and 4200 Families.

5.1 Serial Number

The computer serial number should be provided to Compaq when requesting information or ordering spare parts. The serial number is displayed on the bottom of the CPU on the left front corner (Figure 5.1).

Figure 5-1.

Serial Number Location

Removal and Replacement Procedures 5-1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Disassembly Sequence Chart

Use the chart below to determine the section number and disassembly sequence for removing components from the computer.

5.3.1 Disconnect AC Power

5.3.1 Disconnect External Diskette Drive Bay

5.3.2 Undock the Computer

5.3.7 PC Card

5.4.1 Computer Logo

5.4.2 Computer Feet

5.3.3 Remove Handle Battery Pack

5.4.3 Handle

5.3.4 Remove DualBay Device (Optional Battery)

5.3.5 Pointing Device

5.3.6 Hard Drive

5.5.1 Memory Cover

5.5.2 Memory Board

5.5.3 Lithium Clock Battery

5.5.4 CPU Base Cover

5.5.5 Processor Shield and Board

5.5.6 CPU Cover/Keyboard

5.9.1 Upper PCMCIA Door

5.9.5 PCMCIA Buttons

5.6 Display Assembly

5.7.1 Clutch Cover

5.7.2 Clutch

5.8.1 System Board

5.8.2 Heat Sink

5.9.2 Lower PCMCIA Door

5.9.3 DualBay Eject Button

5.9.4 PCMCIA

5.9.6 Display Ground Bracket

Figure 5-2

. Computer Disassembly Chart

5-2 Removal and Replacement Procedures

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5.3 Preparing the Computer for Disassembly

Before beginning the removal and replacement procedures, complete the following procedures:

1. Disconnect the AC power and any external devices (Section 5.3.1).

2. Undock the computer from the auxiliary base, if necessary (Section 5.3.2).

3. Remove the handle battery or DualBay pack (Section 5.3.3).

4. Remove the DualBay device (Section 5.3.4).

5. Remove the pointing device (Section 5.3.5).

6. Remove any PC Cards (Section 5.3.7).

7. Disconnect the External Diskette Drive Bay, if connected.

Removal and Replacement Procedures 5-3

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5.3.1 Disconnecting the AC Power and External Diskette Drive Bay

The first procedure that should be performed on the computer is to disconnect the power supply and any external devices.

1. Turn off the computer.

2. Disconnect the AC adapter power cord from the wall.

3. Disconnect the AC adapter from the computer.

Figure 5-3

4. Disconnect the External Diskette Drive Bay from the computer.

5. Turn off and disconnect any external devices. If the computer is docked in an auxiliary station, see Section 5.3.2 for undocking

instructions.

5-4 Removal and Replacement Procedures

. Disconnecting the AC Power

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5.3.2 Undocking the Computer

If the computer is docked in an auxiliary station, it must be undocked from the convenience base and from the adapter or detached from the Mobile CD Expansion Unit (MCD) before performing additional work. Complete the following steps to undock the computer. If the computer is not docked in an auxiliary station, proceed to Section 5.3.3.

Convenience Base

The computer must be undocked from the convenience base before performing additional work. The same procedure is followed for removing the adapter and removing the MCD from the convenience base. These procedures are shown in Figures 5-4 and 5-5, respectively. To remove and replace the convenience base, complete the following steps:

1. Disconnect the AC power and any external devices (Section 5.3.1).

2. Close the computer. If you are removing an adapter from the convenience base proceed with step 3. If

detaching an MCD, go to step 5.

3. Grasp the adapter and the convenience base and lift the convenience base slightly to disengage it from the adapter.

4. Pull the two pieces apart.

Removal and Replacement Procedures 5-5

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Figure 5-4

5. To remove the convenience base from the MCD, lift the assembly slightly and pull

6. Grasp the MCD and the convenience base, then pull apart.

. Disconnecting the Convenience Base from the Adapter

the lever on the right bottom of the convenience base. This will separate the two pieces.

5-6 Removal and Replacement Procedures

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Figure 5-5.

Reverse the above procedure to dock the convenience base and the MCD.

Disconnecting the Mobile CD Expansion Unit from the Convenience Base

Removal and Replacement Procedures 5-7

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Convenience Adapter Base

To undock the computer from the adapter, complete the following steps:

1. Grasp both the computer and adapter, then pull apart.

Figure 5-6.

2. Reach underneath the computer and close the expansion cover on the bottom of the computer.

Reverse the above procedure to dock the computer into the adapter base.

Undocking the Computer from the Adapter Base

5-8 Removal and Replacement Procedures

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Mobile CD Expansion Unit

Before detaching the computer from the MCD, disconnect it from the convenience base.

CAUTION:

To detach the computer from the MCD, complete the following steps:

1. Turn the computer and MCD assembly over, bottom side up. Turn the two thumbscrews on the bottom of the MCD counterclockwise to loosen the MCD from the computer.

Make sure the computer display is closed before beginning this procedure

Figure 5-7.

Loosening the Thumbscrews

Removal and Replacement Procedures 5-9

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2. Turn the computer and MCD over, top side up.

3. Rotate the eject lever on the back of the MCD Remove the computer from the guide hooks on the MCD by sliding the computer up and away from the MCD.

down to pry the two pieces apart.

Figure 5-8.

Detaching the Computer from the MCD

5-10 Removal and Replacement Procedures

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4. Close the expansion slot cover on the bottom of the computer.

Figure 5-9.

Closing the Expansion Slot Cover

Reverse the above procedures to attach the computer to the MCD.

CAUTION:

the MCD. Falure to do so may cause damage to the hard drive.

Power to the computer should be turned off when connecting the computer to

Removal and Replacement Procedures 5-11

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5.3.3 Battery Packs

The handle battery pack and the DualBay battery pack should be removed before performing any internal maintenance on the computer.

WARNING:

the battery compartment. To prevent damage, do not allow metal objects to touch the battery contacts. Place only the battery pack for the Compaq Armada Personal Computer into the battery compartment. Do not force the battery pack into the handle if insertion does not occur easily.

WARNING:

water. Do not expose to temperatures higher than 60°C. Do not open a battery pack, as this damages the pack, makes it unserviceable, and exposes potentially harmful battery components. There are no field-serviceable parts located inside the battery pack.

Metal objects can damage the battery pack as well as the battery contacts in

Do not crush, puncture, or incinerate the battery pack. Do not dispose of in

To remove the battery pack from the handle, complete the following steps:

1. Place the computer in its normal operating position with the handle in the carry position.

2. Grasp the battery cap on the top and bottom

handle

and pull the battery pack out of the

Figure 5-10

5-12 Removal and Replacement Procedures

. Removing the Battery Pack from the Handle

HP Compaq Armada 4100, Compaq Armada 4200 Service Manual

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