Compaq armada 1500 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 conta ins informat ion protected by copyright. No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation.

Compaq, LTE, Contura, ProLinea, QuickLock, QuickBlank are registered in the U. S. Patent and Trademark Office. Armada is a trademark of Compaq Computer Corporation.

Contura is registered in the Philippines Patent Office. Microsoft, MS-DOS, and Windows are regi stered trademarks of Microsoft Corporati on.

Windows 95 is a trade mark of Mic rosoft Corporati on.

The softwar e described in this guide is furnished under a license agr eement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. Product name s mentioned herein may be trademarks and/or registered trademarks of their respective companies.

Maintenance and Service Guide

Compaq Armada 1500 Fami l y of Personal Compu ters

First Edition (March 1997) Spare Part Number 255011-001 Document Part Number 284820-001

Compaq Computer Corporation

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Preface

This Maintenance and Service Guide is a troubleshooting guide that c an be used for reference when servicing the Compaq Armada 1500 Family of P ersonal 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 1500 P ersonal Compute rs without notice .

Symbols

The following symbols and words mark special messa ge s throughout this guide:

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

warning could result in bodily harm or loss of life. CAUTION: Text set off in this manner indicates that failure to follow directions could

result in damage to equipment or loss of data.

IMPORTANT: Text set off in this manner present s clarifying inf ormation or spec ific instructions.

NOTE: Text set off in t hi s manner prese nt s commentary, sidelights, or ot her points of inform ation.

Technician Notes

WARNING: Only authorized technicians trained by Compaq should attempt to repair

this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard. Any indication of component replacement or printed wiring board modifications may void any warranty or exchange allowances.

CAUTION: To properly ventilate the system being serviced, you must provide at least 3 inches (7.62 cm) of clearance on the front and back of the computer.

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

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

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 t he laser, the equi pment complies with laser produc t performance st andards set by government agencies as a Class 1 laser product. It does not emit hazardous light; the beam is totally enclosed dur ing all modes of customer operation and maintenance.

CDRH Regulations

The Center for Devices and Radiological H ealth (CDRH) of the U.S. Food and Drug Administration implement ed regulations for laser products on August 2, 1976. These regulations a ppl y to laser product s manufactured from August 1, 1976. Complianc e is mandatory for products mar keted in the United States.

WARNING: Use of controls or adjustments or per f or m ance of pr ocedur es

other than those specifi ed her ein 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 the system being serviced. A similar label also appears on the internal CD-ROM installed in the system.

LASER INFO Laser Type: Semiconductor GaAIAs

Wave Length: 780 +/- 35 nm Divergence Angle: 53.5 Degree +/- 1.5 Degree Output Power: Less than 0.2mW or 10,869 W Polarization: Circular Numerical Aperture: 0.45 +/- 0.04

Only authorized t echnicians, ser vice provider, dealer, or reseller should attempt to repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the com plexity of the individual boards and subassembl ies, no one should attempt to make re pairs at the com ponent level or to make modifications to any printed wiring boar d. Improper repairs ca n create a safety hazard as well as void the warranty.

xii Preface

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Battery Notice

This computer contains an internal lithium battery-powered real-time clock circuit. There is a risk of explosion and injury if the battery is incorrectly replaced or handled improperly. Do not attempt t o recharge, disassemble, immerse in wa ter, or dispose of it in fire. Replacement should be done using the Compaq spar e part for this computer.

The computer also contains a nickel metal hydride or lithium-ion battery pack. There is a risk of fi re and chemical burn if the battery pack is handled improperly. Do not disassemble, c rush, puncture, short external cont acts, dispose in fire or water , or expose it to tempe ratures higher than 60 degrees C.

In North America, dispose of nickel meta l hydride or lithium-ion batter i e s by taking advantage of the Compaq battery recycling program. You will be provided with a postage-paid battery pack mailer preaddressed to a reclamation facility where the metals are recycled.

In Europe, do not dispose of batteries and accumulator s with general household waste. Dispose of or recycle them by using the public collect ion system or ret urning them to Compaq.

Serial Number

The serial number is located on the back of the computer directly below the parallel connector.

Preface xiii

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Locating Additional Information

The followi ng documentation i s available to suppor t the products:

■ Quick Setup

■ Reference Guide

■ Introducing Microsoft Windows 95

■ Compaq Service Quick Reference Guide

■ Service Training Guides

■ Compaq Service Advisories and Bulletins

■ Compaq QuickFi nd

■ Technical Reference Guide

xiv Preface

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Preface

Symbols xi Technician Notes xi Laser Safety xii CDRH Regulations xii Battery Notice xiii Serial Number xiii Locating Additional Information xiv

Chapater 1

Computer Product Description

1.1 Computer F eatures and M odels 1-1

1.2 Standard F eatures 1-2

1.2.1 Software Fulfillment 1-3

1.3 Options 1-4

1.3.1 Convenience Base 1-4

1.3.2 System Memory Options 1-4

1.3.3 Externa l Battery Charge r 1-5

1.3.4 External Keyboards and Pointing Device s 1-5

1.3.5 External Monitors 1-5

1.4 Externa l Computer Components 1-6

1.4.1 Front and Left Side Components 1-6

1.4.2 Right Side Components 1-7

1.4.3 Rear Components 1-8

1.4.4 Bottom Components 1-9

1.4.5 Status Pa ne l Lights 1-10

Chapter 2

Convenience Base Description

2.1 Models and Features 2-1

2.2 Convenience Base F eatures 2-3

2.3 Convenience Base Components 2-4

2.3.1 Front and Right Side Components 2-4

2.3.2 Rear Components 2-6

Contents v

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Chapter 3

Troubleshooting

3.1 Preliminary Steps 3-2

3.2 Clearing the Power-On and Setup Passwords 3-3

3.3 Power-O n Self Test (POST) 3-4

3.4 POST Error Messages 3-4

3.5 Compaq Utilities 3-7 Running Computer Setup 3-7 Running Computer Che ckup (TEST) 3-8 View System Information (INSPECT) 3-10

3.6 Diagnostic E rror Codes 3-11

3.7 Troubleshooting Without Diagnosti cs 3-17

3.7.1 Solving Minor Problems 3-17

Chapter 4

Illustrated Parts for the Computer

4.1 System Unit 4-2

4.2 Mass Stora ge Devices 4-4

4.3 Cables and Power Cords 4-6

4.4 Standard and Optional Boards 4-8

4.5 Options 4-10

4.6 Miscella neous Parts 4-12

4.8 Shipping Boxes 4-14

4.9 Document ation 4-14

Chapter 5

Illustrated Parts for the Convenience Base

Chapter 6

Removal and Replacement Preliminaries

vi Contents

5.1 System Unit 5-2

6.1 Electrostatic Discharge 6-1 Generating Static 6-1 Preventing Electrostatic Damage to Equipment 6-2 Removing Batteries 6-2 Preventing Damage to Drives 6-3

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Grounding Methods 6-3 Grounding Workstati ons 6-4 Grounding Equipm ent 6-4 Recommende d Materials and Equipment 6-5

6.2 Service Consi derations 6-6 Tool Requirements 6-6 Cables and Connectors 6-6

6.3 Serial Number 6-6

Chapter 7

Computer Removal and Replacement Procedures

7.1 Serial Number 7-1

7.2 Disassembly Se quence Chart 7-2

7.3 Design Overview 7-3

7.3.1 System U ni t 7-3

7.3.2 Internal Boards 7-3

7.3.3 Video system 7-4

7.4 Prepari ng t he Computer for D i sassembly 7-5

7.4.1 Disconnecting the AC Powe r 7-5

7.4.2 Undocking the Computer 7-5

7.4.3 Batter y P a ck 7-6

7.4.4 DualBay Devices 7-8

7.4.5 PCMCI A 7-9

7.5 Modem 7-10

7.6 CD-ROM Drive 7-11

7.7 Keyboard 7-13

7.8 Memor y Board 7-16

7.9 Hard Drive 7-19

7.10 Lithium Re a l Time Clock Batt ery 7-21

7.11 Microphone /Display Cable Cover and Microphone 7-23

7.12 Clutch Covers/Display Assembly 7-26

7.12.1 Clutch Covers 7-26

7.12.2 Display Assembly 7-27

7.12.3 Clutches 7-28

7.12.4 Display l atches 7-32

Contents vii

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7.13 Top Cover Assembly 7-34

7.13.1 Power Button 7-36

7.13.2 Suspend Button 7-37

7.13.3 Left and Right Touchpad Butt ons 7-38

7.14 LED Status Panel 7-40

7.15 Audio Board, S peakers, and Audio Ca ble 7-41

7.16 DC-DC Conver t er 7-43

7.17 Fan 7-47

7.18 I/O Fixt ure Connector 7-49

7.19 System Board 7-51

7.20 AC Power 7-53

7.21 Externa l Computer Components 7-54

7.21.1 Computer Logo 7-54

7.21.2 Computer Feet 7-54

Chapter 8

Upgrade Procedures for the Convenience Base

8.1 Serial Number 8-1

8.2 Preliminary Procedure 8-1

8.2.1 Installing the Optional 100BaseT Ether net Network Module 8-2

Chapter 9

Specifications

9.1 Computer 9-2

9.2 Displays 9-3

9.3 Hard Drives 9-4

9.4 Diskette Drive 9-5

9.5 CD-ROM Drive 9-6

9.6 Battery Pa cks 9-7

9.7 Convenience Base 9-8

9.8 External Power Supplies 9-9

9.9 System Int errupts 9-11

9.10 System DM A 9-11

9.11 System I/ O Address 9-12

9.12 System Memory Map 9-14

viii Contents

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Appendix A

Comput

A-1

Appendix B

Power Cord Set Requirements

3-Conductor Power Cord Set B-1

General Requirements B-1 Country-Specific Requirem ents B-2 Notes: B-2

Appendix C

Modem Commands

C-1

Index I-1

Contents ix

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Chapter 1

Computer Product Description

1.1 Computer Featur es and Models

The Compaq Armada 1500 Family of Personal Com pute rs is a line of multimedia notebook computers with advanced modularity, processors, and video graphics. This full-funct i on, Pentium-based, family of notebook computers allows full desktop functionality and connectivity thr ough the use of an optional Convenience Base. The following computer models are available:

Table 1-1

Compaq Armada Personal Computers

Model

1510 120-MHz 11. 3-inch CSTN 1.0-GB BM51 1510DM 120-MHz 11.3-i nch CSTN 1.0-GB ■■BM52 1520 133-MHz 11. 3-inch CSTN 1.0-GB 256-Kbyte BM53 1520D 133-MHz 11. 3-inch CSTN 1.0-GB 256-Kbyte 1520DM 133-MHz 11.3-i nch CSTN 1.0-GB 256-Kbyte 1550T 133-MHz 12. 1-inch CTFT 1.4-GB 256-Kbyte BM56 1550DMT 133-MHz 12.1-inch CTFT 1.4-GB 256-Kbyte

Pentium Processor Display Hard Drive

Level 2 Cache CD-ROM Modem

■ BM54

■■BM55

■■BM57

Serial Configuration

NOTE: All models have 16-MB of standa rd memory, upgradable to 80- MB.

Computer Product Description 1-1

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Figure 1-1. Compaq Armada Personal Computer

1.2 Standard Featur es

The Compaq Armada models have the following sta ndard features :

■ 120- or 133-MHz Pentium processors

■ 16-MB of EDO dynamic ra ndom access memory (DRAM) , expandable to 80 MB

■ 1.4-GB or 1. 0-GB, 2.5- inch with carr ier, or 3-i nch hard drive

■ 11.3-inch Color Super Twist Nematic CSTN, or 12.1-inch Color Thin Film

Transistor (CTFT) SVGA displays

■ Supports Lithi um Ion (Li- ion) and Nickel Metal Hydri de (NiMH) modular batte ry

packs

■ SoundBlaster−compatible audio controller with internal stereo speakers and internal

microphone

■ Full-size 101 key compatible keyboard including 12 f unction keys, 8 cursor control

keys, inverted-T cursor control keys, and embedded numeric keypad

■ Four user-programma bl e keys

■ Touchpad pointing device

■ Operates from an internal battery pack, plus an optional battery pack in the

DualBay, or integrated AC power that is compatible with domestic or international power sources

■ Power management and security features

1-2 Computer Product Description

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■ Infrared interface for wireless communication with other IrDA-compliant devices at

data rates up to 4 mb/sec

■ Two standard device slots that will accommodate two types I and II and one type III

PC Cards, PCMCIA and CardBus car ds; Compaq Telephony modem in the top slot and Zoomed-V i deo in the bottom slot

■ 176 pin expansion connector provides the interface to the convenience base options

■ Rear-panel ports provide connec t ions for parallel and serial, external monitor,

keyboard/mouse , and IrDA compliant infrared devices

1.2.1 Software Fulfillment

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

Computer Product Description 1-3

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1.3 Options

The compute r supports the fol l owing options:

■ Convenience Base pa ss t hrough model

■ Convenience Base w i th Ethernet

■ Memory expansion boards

■ Li-ion and Ni MH battery packs

■ Automobile Adapter

■ External Battery Charger

■ PCMCIA modem

■ AC power cords for international travelers

■ Hard drive upgrade

■ Internal modem

■ Internal CD-ROM drive

1.3.1 Convenience Base

Compaq Arma da models support the following convenience base models:

■ Convenience base pa ss t hrough

■ Convenience base w i th Ethernet (RJ-45 and BNC connectors); BNC connector not

available in North America

■ Convenience base with Ethernet (BNC connector); not avail able in North America

1.3.2 System Memory Options

The compute r supports optional 8-, 16-, 32-, and 64-MB memory boards. The memory boards are 60 ns EDO RAM without parity. System memory can be e xpanded to 80-MB of DRA M depending on the model.

1-4 Computer Product Description

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1.3.3 External Battery Charger

The External Battery charger has the following features:

■ Two battery charge slots

■ Accepts both NiMH and Li-ion modular batteries

■ Charges one batte ry in 1.5 hours

■ Charges two batt eries in 3 hours

1.3.4 External Keyboards and Pointing Devices

Supports Compaq or Compaq compatible PS2 keyboar ds and pointing devices

1.3.5 External Monitors

The Compaq Armada models support all VGA Monitors up to 1024 x 768.

Computer Product Description 1-5

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1.4 External Computer Components

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

1.4.1 Front and Left Side Components

The front and l eft side exter na l components are shown in the following f igure and identified in this section:

Display latches

Battery charge light

Power/Suspend light

DualBay compartment

PC Card slots

PC Card eject levers

RJ-11 port (on some models)

Figure 1-2. Front and Left Side Components

1-6 Computer Product Description

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1.4.2 Right Side Components

The right side e xternal component s are shown in the fol l owing figure and ide nt i fied in this section:

Battery bay

Stereo/spe aker headphone ja ck

Microphone jack

Volume control buttons

CD-ROM drive (on some models )

Cable lock provision

Figure 1-3. Right Side Components

Computer Product Description 1-7

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1.4.3 Rear Components

The rear components are shown in the following fi gure and identified in this section:

Serial connector

Serial number

Parallel connector

External monitor connect or

AC Power connector

Docking connector

Airflow vents

Infrared port

Keyboard/Mouse connector

Figure 1-4. Rear Components

1-8 Computer Product Description

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1.4.4 Bottom Components

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

Docking alignm ent guide

Modem compartment

Diskette drive

Diskette drive release latch

Docking latch receptacles

Battery bay traction grip

Figure 1-5. Bottom Components

Computer Product Description 1-9

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1.4.5 Status Panel Lights

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

Hard drive light

Diskette drive light

Num Lock light

Caps Lock light

Scroll Lock light

Figure 1-6. Status Panel Lights

1-10 Computer Product Description

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Chapter 2

Convenience Base Description

2.1 Models and Features

The convenience bases provide a permanent desktop solution for the computer by eliminat ing the need to disconne ct external devices such as a printer, keyboard, or monitor when you undock the computer. All necessary connections and disconnections are made automatically when the computer is docked and undocked. The f ollowing convenience models are available:

Table 2-1

Compaq Armada 1500 Family of Convenience Bases

Model Serial Configuration

Convenience Base Pass Through model BNH3 Convenience Base wi th Ethernet BNH1 Convenience Base wi th Ethernet, BNC model BNH3

Convenience Base Description 2-1

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Figure 2-1. Compaq Armada 1500 Convenience Base

2-2 Convenience Base Description

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2.2 Convenience Base Features

The Convenience Ba se pass through model and the convenience base with Ethernet model include the following features:

Convenience Base

pass through

Convenience Base

with Ethernet

Connections

Speaker/headphone ■■ Audio Line-In ■■ Serial ■■ Parallel ■■ External Monitor ■■ Keyboard ■■ Pointing Device ■■ MIDI/Joystick ■■

Other Features

Cable lock provision ■■ Pass through AC Power ■■ BNC connector (not available in all count ries) ■ RJ-45 connector ■

Options

Monitor Stand ■■ Localized Power Cords ■■ Kensington lock ■■ Optional 100BaseT Ethernet Upgrade ■■

Convenience Base Description 2-3

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2.3 Convenience Base Components

The convenience base components are illustrate d and described in this section.

2.3.1 Front and Right Side Components

The front and right side convenienc e base components are shown and identifi ed in this section.

Power button

Security cable lock provision

Docking lever

Battery charge light

Suspend button

Power/Suspend light

Retaining latch

Pass through AC power outlet

Docking connector

Docking alignm ent pins

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Docking latches

2-4 Convenience Base Description

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Figure 2-2. Convenience Base Front and Right Side Components

Convenience Base Description 2-5

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2.3.2 Rear Components

The rear components are shown in the following fi gure and identified in this section:

BNC connector ( available on some models)

RJ-45 jack

Serial connector

Parallel connector

External monitor connect or

MIDI/Joystick connector

Pointing device connector

Keyboard connector

Speaker/he adphone jack

Audio Line-i n jack

;

Fan

AC power connector

2-6 Convenience Base Description

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Figure 2-3. Convenience Base Rear Components

Convenience Base Description 2-7

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Chapter 3

Troubleshooting

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

1. Completing the preliminary steps listed in Section 3.1.

2. Running the Powe r-On Self-Test (PO ST) as described in Section 3.3.

3. Running Computer Setup as descr ibed in Section 3. 5

4. Running the Computer Checkup (TEST) as described in Section 3.5.

5. Perfor ming the recom mended actions desc ribed in the diagnostic tables in Section

3.6 if you are unable to exerc i se POST or Com puter Checkup or if the problem persists after running POST and Computer Checkup.

Follow these guidelines when troubleshooting:

■ Complete the recomme nded actions in the order in which they are given.

■ Repeat POST and Computer Checkup after each recom mended action until the

problem is r esolved and the err or message does not r eturn.

■ Once the probl em is resolve d, do not complete the remaining recommended actions.

■ Refer to Chapter 7 for any removal and replacement procedures that are

recommended for the computer. Refer to Chapter 8 for any removal or replacement procedures t hat are recommended f or the convenience base.

■ If the problem is inte rmittent, check the computer or convenience base several times

to verify that the problem is solved.

Troubleshooting 3-1

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Use the following table for quick reference to troubl eshooting 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 fol l owi ng:

Check the system co n figuration

Set the system power managem ent parameters

Return the syst em to its original configuration

Check system conf iguration of installed d evices

Computer Checkup (TEST) under Compaq Utilities

View System Inform ation (INSPECT)under Compaq Utilities

Computer Setup

3.1 Preliminary Steps

IMPORTANT: Use AC Power whe n running POST, Computer Setup, or Computer

Checkup. A low-battery condition could initiate Suspend or Hiberna tion a nd interrupt the test.

Before running P OST and Computer Checkup, complete the following steps:

1. Obtain esta blished passwords. I f you must clear the passwords, go to Se ction 3.2.

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

3. 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 c omputer.

5. If a powe r-on password has bee n e s t ablished, type the pa ssword and press Enter.

NOTE: The key icon appea rs on the display when the computer is turned on to indicate 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 3.2).

6. Run Computer Setup (Section 3.5).

7. Use the Hotkeys to adjust the contrast (Fn+F9) and brightness (Fn+F10) to the center of their ra nges and leave the display open. On models w ith color TFT displ ays, contrast is not a pplicable.

8. Turn off the computer and all external devices.

9. Disconnect any external devic es that you do not want to test. If you want t o use the printer to log error messages, leave it connected to the computer.

3-2 Troubleshooting

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NOTE: If a problem only occurs when an external device is connected to the computer, the problem could be with the external device or its cable . Isolate the problem by running POST w ith and without the external device connected.

10. Use Advanced Di agnostics and loopback plugs in t he serial and parallel connector s if you plan to test t he s e ports. You may r un Advanced Diagnostic s from the hard drive or from a diskette .

If you are r unni ng Diagnostics from the hard drive, complete the following steps:

a. Turn on or restart the computer. b. Press F10 when the cursor appear s 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.

If you are r unning Diagnostics fr om a diskette, c omplete the following steps:

a. Insert the Diagnostics diske t te 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 4 for the description and spare pa rt number of t he loopback plugs. After completing the prel i minary steps, run POST (Sec t ion 3.3) and Computer Checkup

(Section 3.5).

3.2 Clearing the Power-On and Setup Passwords

The power-on password prevents use of the computer until the password is entered. The setup password pre vents unauthorized changes to Computer Se tup. To clear t he passwords, you must remove all power from the syst em board. If you do not know the passwords, use the following procedure to clear the password:

1. Remove all battery packs from the batte ry bay and DualBay, i f applicable.

2. Disconnect the AC power.

3. 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 Secti on 3.4 for additional POST error messages).

7. Shut down the computer, t hen turn off the power again.

Troubleshooting 3-3

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8. Replace the real time clock battery.

9. Install the battery pack(s).

10. Proceed with the troubleshooting procedures.

3.3 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 boot able diskette if one is installed in the diskette drive.

3.4 POST Error Messages

This section cont ains typical error messages that may occur duri ng 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 . Informat ion about running Computer Chec kup is presented later in this c hapter.

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

■ A message wi t h t he prefix "WARNING" appears i nforming you where the error

occurred. T he system pauses until you press F1 t o continue.

■ A message wi t h t he prefix "FAT AL" 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.

3-4 Troubleshooting

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Warning messages indicate a potential problem exists such as a system configuration error. When F1 is pressed, the system shoul d resume. You should be able to correc t problems that pr oduce WARNING me ssages.

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.

Table 3-1

Warning Messages

Message Description

Clock not ticking correctly The real-time clock is not ticking. Repl ace t he real time clock CMOS checksum invalid, run S CU CMOS RAM information has been corrupted and needs to be

reinitialized by running Computer S etup.

CMOS failure, run SCU CMOS RAM has lost power and needs to be reini t i al i zed by running

Computer Setup.

Floppy controller failed The diskette drive controller failed t o respond t o t he reset comm and.

Power - down the system and check all appropri ate connections. If the diskette drive controller continues to f ai l, 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 probl em persist s, you may need t o replace the diskette drive.

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

diskette dri ves d e tected in the system. Run Compu ter 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 comm and. 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. P ress F1. RAM parity error at location xxxx A RAM parit y erro r occu rred at the specified (he x) l oca tion.

ROM at xxxx (LENGT H yyyy) with nonzero checksum (zz)

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

Unexpected amount of memory, run SCU

Hard disk xx failure (or error) A failure or an error occurred when t rying t o access the hard drive.

The video adapter type specified in CMOS RAM does not m at ch t he installed hardware. Run Computer S et up.

Press F1.

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.

possibly by a power loss. Run Computer Setup. The amount of memory detected by POS T does not m at ch t he

amount specified in CMOS RA M . Run Computer Setup.

Press F1 and continue.

Troubleshooting 3-5

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Table 3-2

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 fault y A sequential read/write of the transfer count and

transfer address registers within the prim ary 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 fail ed.

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

bit 4 (Refresh Detect) fail ed to toggle within an allotted amount of t i m e.

Interrupt controller f ai l ed A sequential read/write of vari ous I nterrupt

Controller registers failed.

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

byte value at F000:FFFF. RAM error at location xxxx RAM error occurred during m emory 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 3-3

Fatal Error Beep Codes

Beep Code Beep Sequence Explana tion 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 i nco rrect. 1. Flash the RO M .

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 faul ty. 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 fault y. Replace processor board. S = Short, L = Long, P = Pause

Replace system board.

2. Replace system board.

3-6 Troubleshooting

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3.5 Compaq Utilities

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

If running Compaq Utilities fr om a diskette, note the following:

Use version 10.13c or later .

You will not be able to make a utilities diskette.

Use the Comput er Setup diskett e to run Computer Setup.

The Utilities menu includes the following:

Computer Setup

Computer Checkup (TEST)

View System Information (INSPECT)

Create Dia gnostics diskette (ha rd drive only)

Manage Diagnostics Partition (diskette only)

If the proble m persists, c all for support. F ollow these steps to pr epare for the support call:

1. Run Computer Checkup and save the device list to a fil e and print or save t he log of errors.

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

3. Have the files or the printed information available when call ing for support.

Running Computer Setup

Computer Setup contains a group of utilities that give you an overall pict ure of the

computer’s hardw a re configuration and aid in tr oubleshooting. Use these utilities to set custom feat ures, such as security options, power conservation levels, and startup preferences.

A computer running Windows 95 automatically recogniz es and configures t he system for new devices. However, if there is a configuration problem , or you want to vie w or reset configuration settings, use Computer Setup.

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

Troubleshooting 3-7

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Categories by type i nclude:

System Fea tures—security, power, boot managem ent

Communicat ion—ports, modem, other c ommunication devices

Storage—st orage-rel ated devices suc h as hard drive or diskette

Input Device s —keyboard, mouse, and other input devices

Network—N etwork adapte r, or other ne twork-rel ated devices ( Available only w hen docked or when PC Card is installed

Audio—sound properties and audio de vice settings

Video—monit or video device resources

Other devices—devices that could not be categorized

Categories by conne ction include:

System Fea tures—security, power, boot managem ent

System Devic es—keyboard, mouse, parallel and serial ports

ISA—ISA bus and related devices

PCI—PCI bus a nd connected devices

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

Running Computer Checkup (TEST)

Computer Checkup (TEST) det ermines whet her the various computer component s and devices are recognized by t he system and ar e functioning prope rly. You can displ ay, print, or sa ve the inform ation generated by Computer Chec kup.

Computer Chec kup is installed on the hard drive. If the hard drive is nonfunctiona l, you can run it from a diskette.

NOTE: It is recommended that you make diskette copies of Compute r Checkup and keep them available for future needs. A current copy can be obtained from the Compaq Customer Support Center.

3-8 Troubleshooting

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Computer Checkup

To run Computer Checkup from the ha rd drive, compl ete the followi ng st eps:

1. Close all applications and shut down the computer.

2. Turn off the computer.

3. Turn on the computer.

4. When the cursor moves to the ri ght side of the scre en, press F10.

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

5. From the Compaq Utilities main menu, sele c t Computer Checkup (TES T). 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 Che ckup correctly de tected the instal led devices. If the list i s correct, se l ect 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 followi ng from the diagnosti cs menu:

■ Quick Check Diagnost ics. Runs a quick, general test on each device with a

minimal number of prompts. If err ors occur, they display when the testing i s complete. You cannot print or sa ve the error messages.

■ Automatic Diagnostics. Runs an unattended, maximum testing of each device

with minim al prompts. You c an choose how many times to run the tests, to stop on errors, or to print or sa ve a log of err ors.

■ Prompted Diagnostics. Allows maximum control over te sting the devices. You

can choose attended or unattende d t esting, decide to stop on errors, or choose to print or save a l og of errors.

9. Follow the instructions on the screen as the devices are tested. When testing is complete, the D iagnostics menu appea rs.

10. Exit the Diagnost ics menu.

NOTE: Exiting the Compaq Utilities menu restarts the computer and saves the

changes.

Troubleshooting 3-9

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11. Look up the Compute r Checkup error codes that were displayed by re ferring to "Computer Che ckup (TEST) Error Codes" and take the re commended ac tion.

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

Computer Checkup (TES T) Error Codes

IMPORTANT: Rerun Computer Checkup each time you complete a recommended action

step. If the problem is resol ved when POST and Com puter Checkup are rerun (i.e., with no error codes) do not perform the remaini ng recommende d action steps.

Computer Checkup (TEST) error codes occur if the system recognizes a problem while running Computer Checkup. These error codes help identify possible defe ctive assemblies. Tables 3-4 through 3- 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.

View System Information (INSPECT)

The View System I nformation (INSPECT) utility provides information a bout the computer and i nst alled or connected devices. You ca n display, print, or save the information.

Follow these steps to run INSPECT from the hard drive:

1. Turn on the external devi ces that you want to test. Connect t he printer if you want to print the information.

2. Turn on or restart the computer.

3. 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 Dia gnost ics menu.

5. Select the item you w ant to view from the follow ing list:

System Memory ROM Audio Keyboard Operating system System ports System files System storage Windows files Graphics Miscellaneous

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

3-10 Troubleshooting

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3.6 Diagnostic Error Codes

Diagnostic er ror codes occur if the system re cognizes a problem while running the Compaq Diagnostic program. These error codes help identify possibly de fective subassemblies.

Tables 3-4 through 3-14 list possible error codes, a description of the er ror condition, and the action required to resolve the err or 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 7, "Removal and Replacement Procedures." For removal and replacement procedures f or the convenience base, see Chapter 8.

Table 3-4

Processor Test Err or Codes

Error Code Description Recommended Action

101-xx CPU test failed Replace the processor board and retest. 103-xx Coprocessor or Weitek Error 103-xx DMA page registers test failed Replace the system board and retest. 104-xx Interrupt controller ma st er t est 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 113-xx Protected mode test fail ed 114-01 Speaker test failed

1. Check system co n figuration .

2. Verify cable connections to speaker.

3. Replace the system board and rete st .

Troubleshooting 3-11

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Table 3-5

Memory Test Error Codes

Error Code Description Recommended Action

200-xx Memory machine ID test fai l ed The following steps apply to error codes 200-xx and

203-xx:

203-xx Memory system ROM checksum failed

203-xx Write/Read test fai l ed The following steps apply to error codes 203-xx

204-xx Address test failed 1.Remove the memory board and retest. 211-xx Random pattern test fai l ed 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,

303-xx Failed Individual Key Test 2. Replace the keyboard and retest. 304-xx Failed Keyboard Repeat Test 3. Replace the system board and retest.

1.Flash the system ROM and retest.

2.Replace the system board and retest.

through 215-xx:

Table 3-6

through 304-xx :

turn off the computer and connect the keyboard.

Table 3-7

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 403-xx : 402-xx Failed Port Test 1. Connect the printer. 403-xx Printer pattern te st f ai l ed 2. Check power to the printer.

3. Install the loop-back connector and retest.

4. Check port and IRQ configuration.

5. Replace the system board and retest.

3-12 Troubleshooting

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Table 3-8

Diskette Drive Test

Error Code Description Recommended Action

600-xx Diskette ID drive types test

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

603-xx Diskette write, read, com pare t e st f ai l ed 3.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 fail ed 606-xx Diskette speed test failed 609-xx Diskette reset controlle r t est failed 610-xx Diskette change line test fai l ed 697-xx Diskette type error 698-xx Diskette drive speed not within li m i ts 699-xx Diskette drive/media ID error Run Computer Set up.

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. 1703-xx Hard drive write/read/compare test

failed 1704-xx Hard drive random seek test failed 3.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 f ai l ed 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 3-9

1.Check port configuration.

2.Replace the system board and retest.

Table 3-10

through 1736-xx :

2.Replace the hard drive and retest.

Troubleshooting 3-13

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Table 3-11

Video Test Error Codes

Error Code Description Recommended Action

501-xx Vi deo cont rol l er t est failed

502-xx Vi deo m em ory t est failed 503-xx Video attribute test failed 504-xx Vi deo character set test failed 505-xx Vi deo 80 × 25 m ode 9 × 14 character

cell test failed

506-xx Video 80 × 25 m ode 8 × 8 character

cell test failed

507-xx Video 40 × 25 m ode test failed 508-xx Video 320 × 200 m ode color set 0 t est

failed

509-xx Video 320 × 200 m ode color set 1 t est

failed

510-xx Video 640 × 200 m ode test failed 511-xx Video screen memory page t est f ai l ed 513-xx Vi deo gray scale t est f a il ed 514-xx Video whi te screen test failed 516-xx Video noi se pat t ern test failed 2403-xx Video memory test failed

2403-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 2413-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 fail ed

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

1. Connect and external monitor and ret est .

2. Replace the LED status board and retest .

3. Replace the display and retest.

4. Replace the system board and rete st .

The following steps apply to error codes 2403-xx through 2456-xx:

1. Run Computer Setup.

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

3.Replace the display assembly and retest.

4. Replace the system board and rete st .

3-14 Troubleshooting

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Table 3-11 Continued Error

Code Description Recommended Action

2419-xx ECG/VGC ROM checksum test failed The following steps apply to error codes 2403-xx

through 2456-xx:

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

failed

2423-xx ECG/VGC 640 × 350 16 color set test fail ed 2. Disconnect external monitor and te st with internal

2423-xx ECG/VGC 640 × 350 64 color set test failed 3. Replace the display assembly and retest. 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 2433-xx 320 × 200 graphics (256 color mode) test

failure 2448-xx Advanced VGA Controller test fai l ed 2451-xx 133-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.

LCD display.

4. Replace the system board and rete st .

2480-xx:

Table 3-12

Audio Test Error Codes

Error Code Description Recommended Action

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

Troubleshooting 3-15

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Table 3-13

Pointing Device Interface Test Error Codes

Error Code Description Recommended Action

8601-xx Mouse test failed The following steps apply to 8601-xx and 8603-xx:

1. Replace the top cover assembly.

8603-xx Interface test fa il e d 2. Replace the system board and retest.

Table 3-14

CD-ROM Test Error Codes

Error Code Description Recommended Action

3301-xx CD-ROM drive read test failed The fo ll owi ng st eps appl y t o error codes 3301-xx through

3305-xx and 6600-xx through 6623-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 3. Replace the system board and ret est . 6608-xx Controller test failed 6623-xx Random read test failed

3-16 Troubleshooting

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3.7 Troubleshooting Without Diagnostics

This section provides information about how to identify and correct some common hardware, memory, a nd software probl ems. It also e xpl ains several types of common messages that may be displayed on the screen. The following pages contai n troubleshooting i nformation on:

■ Audio ■ Pointing device

■ Battery/Battery gauge ■ Memory

■ Diskette/Diskette drive ■ PC Card

■ Hard drive ■ Power

■ CD-ROM drive ■ Printer

■ Hardware installation ■ Screen (LCD and CRT)

■ Infrared connection ■ Software

■ Keyboard (N umeric keypad)

3.7.1 Solving Minor Problems

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

Solving Audio Problems

Some common audio problems and sol utions are listed i n the following table.

Table 3-15

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 (P OS T ).

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, pre ss Fn+F5 to adjust the volume.

Run Computer Setup and turn on beeps.

Troubleshooting 3-17

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Solving Battery and Battery Gauge Problems

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

Table 3-16

Solving Battery and Battery Gauge Problems

Problem Probable Cause Solution(s)

Computer won’t tu rn on when battery pack is inserted and power cord is unplugged.

Computer is beeping and battery light is blinking.

Computer battery light bl i nks 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 mem ory was lost when replacing the battery pack.

Battery is discharged. Connect the computer to an exte rnal power

source and charge the battery pack. Replace the battery pack with a full y 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 initiat e 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 l ife. Replace battery pack. The battery pack was not

replaced.

Run Computer Setup to tu rn on t he l ow battery warning beeps.

Press Fn+F5 to turn the speaker on and then adjust the volume.

No action is necessary.

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

Turn off the computer and restart.

Continued

3-18 Troubleshooting

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Table 3-16 Continued

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 has

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.

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 t he 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 batt ery

completely and then recharge it. Set a power management level in Comput er

Setup. Turn off or disconnect external devices when

not using them. No action is required.

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

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

Enable power management in Computer Setup and in Windows Power Properti es. 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 com put er to reduce the discharge rate.

determine the low batt ery condit i on. Reduce use of accessories which drain

power such as the CD-ROM drive or PC Card.

Keep the battery pack within t he 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 3-19

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Solving Diskette an d Diskette Drive Problems

Some common causes and solutions for diskette and diskett e drive problem s are listed in the following table.

Table 3-17

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 di skette. At the

Diskette drive cannot write to a diskette.

Diskette drive cannot read a diskette.

Cannot boot from diskette. Boot abl e di skett e i s not i n

Diskette drive is not installed properly.

Diskette is incorrectly insert ed. Remove diskette and reinsert. Software program is damaged. Check the program diskettes. Diskette is write-protected. Disable the diskette’s write-protect feature or

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 no t formatte d. Format the disket te. At th e system prompt,

The wrong type of diskette is being used.

Diskette has a bad sector. Copy files to hard drive or another di sket t e .

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:

use a diskette that is not write-prot ect ed. Check the drive letter in the path stat em ent .

Use another diskette.

Diagnostics diskette.

enter

FORMAT A:

Use the type of diskette required by the dri ve.

Reformat bad floppy.

Diagnostics diskette. Format the diskette. A t the system prompt,

enter

FORMAT A:

Put the bootable diskette i n dri ve A. If a diskette drive is in the computer DualBay, that is drive A.

Run Computer Setup and enable Diskett e Boot from the Boot M anagem ent menu.

3-20 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 3-18

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 seat ed

Solving CD-ROM Dri ve P r ob l ems

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

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

has failed.

properly. Hard drive is damaged. Replace t he hard dri ve.

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, rem ove and reinsert the hard drive, then turn the computer on.

Table 3-19

Solving CD-ROM Drive Pr oblems

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 i t on agai n. The drive is initialized during power up.

Troubleshooting 3-21

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

Solving Hardware Installation Problems

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

Table 3-20

Solving Hardware Installation Problems

Problem Probable Cause Solutions(s)

A new device is not recognized as part of the comput e r system.

Solving Infrared Connection Problems

Some common causes and solutions for infrared c onnection problems a re listed in the following table.

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. T urn off the computer and reinsert the devi ce.

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.

Table 3-21

Solving Infrared Connection Problems

Problem Cause Solution(s)

Cannot link with another computer.

Data transmission problem. Direct sunlight, fluorescent

Interrupt request (IRQ) confl i ct . Check IRQ assignments for conflicts and

reassign as necessary.

Baud rate conflict. Select the same baud rate fo r bot h

computers.

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

Interference from other wi rele ss 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 t han

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.

3-22 Troubleshooting

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Solving Keyboard/Numeric Keypad Problems

Some common causes and solutions for keyboard/numer ic keypad problem s are listed in the following table.

Table 3-22

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.

Solving Pointing Device Problems

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

Problem Cause Solution(s)

External pointing device does not work.

Integrated pointing device does not work.

Num Lock function is not enabled.

Press the Fn+NumLk keys to enable the Num Lock function and embedded numeric keypad. The Num Lock icon on the status panel turns on.

Table 3-23

Solving Pointing Devi ce Problems

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 3-23

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Solving Memory Problems

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

Table 3-24

Solving Memory Problems

Problem Probable Cause Solution(s)

Memory count during PowerOn Self-Test (POS T) i s incorrect.

"Out of Memory" message is displayed on the screen or insuffici en t 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 f or the application.

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

Ensure that the optional mem ory expansion

board is installed correctly.

Check the application documentation for

memory requirements.

Install additional m em ory.

Remove from memory any TSR applications

that you do not need.

3-24 Troubleshooting

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Solving PC Card Problems

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

Table 3-25

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 corre ctly

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 volum e .

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 inst al l ation instructions.

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

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

menu to enable PC Card slots.

Ensure the card i s i n se rted in the correct orientation.

Check and secure telephone connection.

Install drivers.

Continued

Troubleshooting 3-25

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Table 3-25 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 dri ve letter assigned to the card.

Check the list of PC Card cards test e d successfully in Compaq PC Card platforms.

3-26 Troubleshooting

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Solving Power Problems

Also see "Solving Ba t tery and Batter y Gauge Problems" in this chapter.

Table 3-26

Solving Power Problems

Problem Probable Cause Solution(s)

Computer won’t tu rn on and LEDs aren’t lit.

Computer turned off whil e i t was left unattended and the power /suspend light is off.

Computer initiated S u spend 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 def ect i ve. Replace the integrated AC Power and restart. System initiated Hi bernation

due to a critical low-battery condition.

System initiated Hi bernation 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 full y 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 setti ng i n

Windows 95, click the Hibernation tab in Power properties. Windows NT, run Comput er 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 3-27

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Solving Printer Problems

If you experience problems pr inting, run a print er self-tes t . 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 appli cation documentation.

Table 3-27

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-li ne.

Refer to the printer document ation to install the correct printer driver.

Connect the printer to the network.

Replace the cable.

printer to on-line. Refer to the printer document ation to install

the correct printer driver. Ensure that the printer signal cable i s

properly connected to the computer.

Solving Screen Problems

This section lis t s some common causes and solutions for computer display and e xternal monitor proble ms.

You can perform a monitor self-test on an external VGA color or monochrom e monitor by disconnecting the monitor from the compute r. To do so, com plete the foll owing steps:

1. Turn off the monitor.

2. Turn off the com puter.

3. 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 nar row black border may also appear on t he left and

right sides of the di spl ay. Either of t hese displays indicat e s t ha t the monitor is working proper ly.

3-28 Troubleshooting

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display or flashing internal display

Table 3-28

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 informati on.

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 when connected to external

monitor.

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.

(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 ti m eout 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 aft er the computer was turned on

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

The ANSI.SYS driver is not in the CONFIG.SYS file or the path is 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.

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 approximat el y 1 million transistors that are on a

12.1-, or 11.3-inch display. To maintain a high-quality image, the

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

Adjust the control(s)using Fn+F9 (contrast) and Fn+F10 (brightness).

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 Fn+F4 hotkey to di sp l a y information on the computer screen.

Suspend. Enter the power-on password if prompted.

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

Press the Fn+F4 hotkey to switch to the external monitor

Verify the cables are properly connected.

Add the ANSI.SYS driver to the CONFIG.SYS file. Add t he following line: DEVICE=C:\ANSI.SYS

Restart the computer. I f si m ul t aneous display is desired, use 640 × 480 resolution.

This is typical; no action is required.

Troubleshooting 3-29

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Solving Software Application Problems

Most softwar e application or i nst allation 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 3-29

Solving Software Application Problems

Problem Probable Cause Solution(s)

Cannot use an application. The application has not been

added to the PATH statem ent .

Insufficient memory to run application.

System ran out of memory f or 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 ful l pat h nam e.

Check the application documentation f or m e m ory requirements.

Install additional m em ory. Remove from memory any TSR applications that

you do not need.

Exit Windows and enter again using the f ol l owi ng command to run in enhanced mode: WIN/3

3-30 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 i s desi red, use the resolution supported by the computer.

Press any key or move the mouse to restore the display. If the display remains distorted, turn t he m oni t or off and then back on. Deselect the Energy Star Moni t or set ting.

Press the Fn+F4 hotkeys to toggle through the three display possibilities.

Initiate Suspend, t urn on ext ernal m oni t or, then exit Suspend to integrate new monit or.

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

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 comput er and re-dock.

Table 3-32

Undocking Problems and Solutions

Problem Possible Cause Solution(s)

The computer will not undock.

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

pulling forward on docking lever with other hand. Security cable i s locked. Unlock securit y ca b l e . 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 3-31

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Table 3-33

External Device Installation Probl ems and Solutions

Problem Possible Cause Solution(s)

A new device is not recognized as part of the comput e r 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, t u rn on ext ernal devices wit h power switches, then exit Suspend to integrat e the new device.

Windows 95: Initiate Suspend, pl ug in and turn on external devices with power switches, then exit Suspend t o i ntegrate the new device.

Windows NT: Power off computer and ext ernal 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 t he m ouse, t hen turn the unit on to integrate the mouse.

3-32 Troubleshooting

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Solving Network Problems

This section provides guidelines for troubleshooting common Ethernet networ k problems. Refer to these guide lines when you have dete rmined that the computer in the convenience ba se is not communi cating with the network. Thes e 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 c onvenience base. A loose cable is

the most common cause of network problems. I f the cable is loose, secure it a nd see if the computer can communicate with the network.

■ Determine whether the current computer or another computer has communicated

with the netw ork from the convenience base. If so, dete rmine 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.

After installing network operating system, comp u ter does not detect network interface.

Diagnostics reports a failure.

The computer is not connected to the Ethernet net work.

Suspend or Hibernation was initiated.

The network driver fails to load during system initial i zat i on.

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

Suspend or Hibernation was initiated.

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.

Connect the computer to the E t hernet network.

Exit Suspend or Hibernation. Windows 95: Restart the computer by clicking S tart, Shut

Down, Restart the Computer. Windows NT: Click Start, S hut Down. Power the computer

back on. Ensure that network drivers are loaded and that the drive path

is correct. Enable the parallel port. Rest art the computer. Press F10

immediately when the cursor moves to t he t op ri ght side of the screen.

Exit Suspend or Hibernation. Windows 95: Restart the computer by clicking S tart, Shut

Down, Restart the Computer. Windows NT: Click Start, S hut Down. Power computer back

on. Ensure that the cable is securely connected to the proper

network connector on the Ethernet net work.

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

Troubleshooting 3-33

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Solving Ethernet Network Problem s Continued Problem Possible Cause Solution(s)

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.

Network drivers are not loaded.

A network configuration error may have occurred (i.e., *.ini, *.inf, *.nif, or CONFIG.SYS files 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.

Load the network drivers. Windows 95: Restart the computer by clicking S tart, Shut

Down, Restart the Computer. Windows NT: Click Start, S hut Down. Power the computer

back on. Contact the network administrator.

Exit Suspend or Hibernation. Windows 95: Restart the computer by clicking S tart, Shut

Down, Restart the Computer. Windows NT: Click Start, S hut Down. Power computer back

on. Windows 95: Restart the computer by clicking S tart, Shut

Down, Restart the Computer. Windows NT: Click Start, S hut 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: If the 100BaseT Ethernet upgrade m odule has been installed, remove this module before returning the convenience base for re placement.

3-34 Troubleshooting

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Chapter 4

Illustrated Parts for the Computer

This chapter provides illustrated parts and references for spare parts for the Compaq Armada 1500 Family of Personal Computers. To review an illustrated par t s breakdown of the computer, refer to the Illustrated Parts Map that comes with this guide.

Illustrated Part s Cat al og f or the Computer 4-1

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

4.1 System Unit

Figure 4-1. System Unit

4-2 Illustrated Parts Catal og for the Computer

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Table 4-1

System Unit

Item Description Spares Part Number

* K eyboard (B el gian) 254968-181 * K eyboard (Brazilian) 254968-035 * Keyboard (Danish) 254968-081 * K eyboard (French) 254968-051 * K eyboard (French Canadian) 254968-121 * K eyboard (German) 254968-041 * Keyboard (Hangeul) 254968-033 * K eyboard (I talian) 254968-061 * K eyboard (Japanese) 254968-191 * K eyboard (Lat i n A m eri can Spani sh) 254968-161 * Keyboard (Norwegian) 254968-091 * Keyboard (Portuguese) 254968-131 * Keyboard (Spanish) 254968-071 * Keyboard (Swedish/Finnish) 254968-101 * Keyboard (Swiss) 254968-111 * K eyboard (Taiwanese) 254968-034 * Keyboard (UK English) 254968-031

1 Keyboard (US/Canada) 254968-001 2 T op cover assembly 254978-001 3 S peakers 254979-001 4Base enclosure assembly212535-001

5 11.3-inch CSTN display assembly 254966-001 * 12. 1-inch CTFT display assembly 254967-001 * Not illustrated

Illustrated Part s Cat al og f or the Computer 4-3

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4.2 Mass Storage Devices

Figure 4-2. Mass Storage Devices

4-4 Illustrated Parts Catal og for the Computer

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Table 4-2

Mass Storage Devices

Item Description Spares Part Number

1 10x CD-ROM Dri ve 254974-001

2 1.0-GB hard drive 254963-001 * 1.4-GB hard drive 254964-001

3 1.4-MB, diskette drive 254962-001

4 Li t hi um Ion Battery Pack 254960-001 * Ni ckel Metal Hydride Battery Pack 254959-001 * Not illustrated

Illustrated Part s Cat al og f or the Computer 4-5

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4.3 Cables and Power Cords

Figure 4-3. Cables and Power Cords

4-6 Illustrated Parts Catal og for the Computer

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Table 4-3

Cables and Power Cords

Item Description Spares Part Number

1 CD-ROM dri ve cable 254975-001

2 M odem cable 165224-001

3* AC Power cord (Australia/New Zealand) 246959-011 * AC Power cord (Denmark) 246959-081 * AC Power cord (Europe) 246959-021 * AC Power cord (Italy) 246959-061 * AC Power cord (Japan) 246959-291 * AC Power cord (Korea) 246959-AD1 * AC Power cord (Switzerland) 246959-AG1 * AC Power cord (UK and Singapore) 246959-031

AC Power cord (US/Canada) 246959-001 4 RTC B a t tery 254971-001 5 M i crophone (included i n Mi scellaneous

Parts kit)

* Not illustrated

254981-001

Illustrated Part s Cat al og f or the Computer 4-7

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4.4 Standard and Optional Boards

Figure 4-4. Standard and Optional Boards

4-8 Illustrated Parts Catal og for the Computer

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Table 4-4

Standard and Optional Boards

Item Description Spares Part Number

1 Memory board (SODIMM), 8-M B , 60 ns, nonparity 272108-001 * Memory board (SODIMM), 16-MB, 60 ns, nonpari t y 272110-001 * Memory board (SODIMM), 32-MB, 60 ns, non pari t y 220583-001 * Memory board (SODIMM), 64-MB, 60 ns, non pari t y 273158-001 2 LED Status Board, 11.3-i nch display 254958-001 * LED St atus Board, 12.1-inch display 255049-001 3 I/O Fixture Connector 254956-001 4 DC-DC Converter 254976-001 5 Audio Board 254957-001 6 System board, 120-MHz CPU 255010-001 * System board, 133-MHz CPU with L2 cache 254949-001 * System board, 150-MHz CPU with L2 cache, MMX * Not yet available 7 Armada 1500 Series Telephony Modem 255014-001 * Not illustrated

Illustrated Part s Cat al og f or the Computer 4-9

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4.5 Options

Figure 4-5. Options

4-10 Illustrated Parts Catal og for the Computer

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Table 4-5

Options

Item Description Spares Part Number

1* Power Cord (Australi a/New Zealand) 246959-011 * Power Cord (Denmark) 246959-081 * Power Cord (Europe) 246959-021 * Power Cord (Italy) 246959-061 * Power Cord (Japan) 246959-291 * Power Cord (Korea) 246959-AD1 * Power Cord (Switzerland) 246959-AG1 * Power Cord (UK and Singapore) 246959-031

Power Cord (US/Canada) 246959-001 2 Automobile adapter 254970-001 3 Li -ion m odul ar bat tery pack 254960-001

* Ni M H m odular battery pack 254959-001

4 External battery charger 254970-001

* Not illustrated

Illustrated Part s Cat al og f or the Computer 4-11

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4.6 Miscellaneous Parts

Figure 4-6. Miscellaneous Parts

4-12 Illustrated Parts Catal og for the Computer

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Table 4-6

Miscellaneous Parts

Item Description Spares Part Number

Plastics kit includes: 1

Left clutch cover 2 M i crophone/ Di spla y cable cover 3 Right clut ch co ver 4 RTC Battery cover 5 CD-ROM access door 6 Modem access door 7 Fan 254977-001 8 AC Power 254961-001

* M i scell aneous Pa rt s K i t (includes

microphone)

* Screw kit 258819-001 * T ool kit (includes connector removal tool,

loop back plugs, and case utility tool)

* Not illustrated

254981-001

100767-001

Illustrated Part s Cat al og f or the Computer 4-13

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4.8 Shipping Boxes

Table 4-7

Shipping Boxes

Description Spares Part Number

Shipping Carton (5 ea) 254972-001 Shipping Carton, display (1 ea) 254973-001

4.9 Documentation

Table 4-8

Documentation

Description Spare Part Number

Compaq Armada Family Illustrated Parts Map (10 ea)

Compaq Armada Family Reference Guide 254984-001 Software CD Support 255097-001

255012-001

4-14 Illustrated Parts Catalog for the Computer

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Chapter 5

Illustrated Parts for the Convenience Base

This chapter provides illustrated parts and spare parts references for the Compaq Armada 1500 Family of Convenience Bases. To review an illustrated parts breakdown of the convenienc e base, refe r to the Illustrated Parts Map that comes with this guide.

Illustrated Part s f or t he Conveni ence Ba se 5-1

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5.1 System Unit

Figure 5-1. Convenience Base

5-2 Illustrated Parts for the Convenience Base

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Table 5-1

System Unit

Item Description Spares Part Number

1 Convenience Base (Pass through model) 254988-001 * Convenience Base (E t hernet model) 254987-001 * Convenience B ase (E thernet model, BNC) 254989-001

* Not illustrated

Table 5-2

Cables and Power Cords

Description Spares Part Number

* AC Power cord (Australia/New Zealand) 246959-011 * AC Power cord (Denmark) 246959-081 * AC Power cord (Europe) 246959-021 * AC Power cord (Italy) 246959-061 * AC Power cord (Japan) 246959-291 * AC Power cord (Korea) 246959-AD1 * AC Power cord (Switzerland) 246959-AG1 * AC Power cord (UK and Singapore) 246959-031 * AC Power cord (US/Canada) 246959-001 * Not illustrated

Table 5-3

Options

Description Spares Part Number

* Monitor Stand 254990-001 * 100BaseT Ethernet Upgrade 225436-001 * Not illustrated

Table 5-4

Shipping Boxes

Description Spares Part Number

Shipping Carton (5 ea) 254991-001

Illustrated Part s f or t he Conveni ence Ba se 5-3

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Chapter 6

Removal and Replacement Preliminaries

This chapter provides general service information for the Compaq Armada 1500 Family of Personal Computers. Adherence to the procedures and precautions described in this chapter is essential for proper service.

6.1 Electrostatic Discharge

A sudden discharge of static elec tricity from a finger or ot her conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt or heard, but damage occurs. An electronic device exposed to electrostati c discharge (ESD) may not be affected at a ll 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 de vic e parameters or melt silicon junctions.

Generating Static

Table 6-1 shows how different activities generate static electricity and at different electrostatic voltage levels.

Table 6-1

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 plasti c 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 St yrof oam 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 Preliminari es 6-1

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Preventing Electrostatic Damage to Equipment

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

■ Protect all electrostat ic parts and assemblies with conducti ve 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 re moving them from their

container.

■ Always be properly grounded when touching a se nsitive component or

assembly.

■ Place reusable electronic-sensitive parts from assemblies in protective

packaging or conductive foam.

Use transport e rs and conveyors ma de of antistatic belts and metal roller bushings. Mechanized e qui pment used for m ovi ng materials must be wired to gr ound and proper materia l s selected to avoid sta tic charging. Whe n grounding is not possible, use an ionizer to dissipate electric charges.

Removing Batteries

Compaq recommends that you r emove all bat teries fr om the compute r before begi nni ng the disassembly procedures. Failure to do so could cause damage to computer components.

6-2 Rem oval and Repl acement Preliminaries

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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 f rom 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.

Grounding Methods

The method for grounding must include a wrist stra p or a foot strap a t a grounded workstation. When seated, wear a wrist strap connected to a gr ounded system. When sta ndi ng, use footstraps and a grounded floor m at.

Table 6-2

Static-Shielding Protection Level s

Method Voltages

Antistatic plastic 1,500 Carbon-loaded plastic 7,500 Metallized laminate 15,000

Removal and Replacement Preliminari es 6-3

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Grounding Workstations

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

■ Cover the workstation with approved static-dissipati ve material. Provide a

wrist strap connected to the work surface and proper l y grounded tools and equipment.

■ Use static-dissipative mat s , heel straps, or air ionizers to give added protec tion.

■ Handle electrostatic sensitive components, parts, a nd assemblies by the case or PCB

laminate. Handle them only at static-free workstations.

■ Avoid contact wi th pins, leads, or c ircuitry.

■ Turn off powe r and input signals bef ore inserting and r emoving connector s 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 Styrofoa m.

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

conductive.

■ Use a portable field servic e kit with a stati c dissipative vinyl pouch that folds out of a

work mat. Also use a wrist strap and a ground cor d for the work surface. Ground the cord to the chassis of the equipment unde rgoing test or repair.

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 t o

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

Heel straps/Toe straps/Bootstraps can be used at standing workst ations and are compatible w i th most types of boots and shoe s. 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 effe ctive, the conduct ive strips must be w orn in contact with the skin.

6-4 Rem oval and Repl acement Preliminaries

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Recommended Materials and Equipment

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

■ Antistatic tape

■ Antistatic smocks, aprons, or sl eeve protectors

■ Conductive bins and other assembly or soldering aids

■ Conductive foam

■ Conductive table -top workstati ons with ground cord of 1 megohm

of resistance

■ Static dissipative table or f l oor mats with hard tie to ground

■ Field service kits

■ Static awareness labels

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

■ Material handling packages

■ Conductive plastic bags

■ Conductive plastic tubes

■ Conductive tote boxe s

■ Metal tote boxes

■ Opaque shielding bags

■ Transparent metallized shielding bags

■ Transparent shielding tubes

Removal and Replacement Preliminari es 6-5

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6.2 Service Consider ations

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

Tool Requirements

■ Magnetic Torx T-8 screwdriver

■ Flat-bladed screwdriver (optional)

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

■ 7-mm socket wrench

■ 5-mm socket wrench/screw driver

■ Preloaded a pplication diskettes

IMPORTANT: To reassemble the computer, set the Torx T-8 screwdriver to 3-inch lbs.

Cables and Connectors

Apply only the tension required to seat or unseat the cable s 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.

6.3 Serial Number

The computer serial numbers should be provided to Com paq whenever requesting informati on or ordering spare parts. The serial number i s l ocated on the rear of the CPU.

6-6 Rem oval and Repl acement Preliminaries

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Chapter 7

Computer Removal and Replacement Procedures

This chapter provides the removal and replacement procedures for the computer.

7.1 Serial Number

The computer serial number should be provided to Com pa q support when requesti ng informati on or ordering spare parts. The serial number i s di splayed on the rear of the CPU (Figure 7.1).

Figure 7-1. Serial Number

Computer Removal and Replacement Procedures 7-1

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7.2 Disassembly Sequence Chart

This chart shows the order in whic h di sassembly procedur es are provided:

7.4 Preparing the Computer f or Di sassembly Disconnecting AC Power Undocking the Computer Battery Pack DualBay Device PC Cards

7.5 Modem

7.6 CD-ROM Drive

7.7 Keyboard

7.8 Memory

7.9 Hard Drive

7.10 Lithium Real Time Clock Bat tery

7.11 Microphone/Display Cable Cover and Microphone

7.12 Clutch Covers/Display Assembly

Clutch Covers Display Assemb l y Display Clutche s Display Latches

7.13 Top Cover Assembly

Power Button Suspend Button Touchpad Mouse Buttons

7.14 LED Status Panel

7.15 Audio Board, Speakers, and Audi o Cabl e

7.16 DC-DC Converter

7.17 Fan

7.18 I/O Fixture Connector

7.19 System Board

7.20 AC Power

7.21 External Components

7-2 Computer Removal and Replacement Procedures

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7.3 Design Overview

This section presents a design overview of the computer. The overview is limited to field replaceable parts. All replacement parts are listed in Chapter 4.

7.3.1 System Unit

The computer is a traditional clamshell design with a display unit attached to a system unit. The computer opens to reveal a backlit LCD display a nd a full-sized keyboard. The display is designed for a continuously adjustable tilt angle.

7.3.2 Internal Boards

The system electronics are integrated on five printed circuit assemblies: the LED status panel, audio board, system board, serial-parallel port board, and the DC-DC converter board.

■ The LED sta t us board connects the system board to the display cables and supports

the status LEDs.

■ The DC-DC conve rter board creates the CPU (2.9v or 2.5v) and system voltages

(3.3v and 5v) from the battery or AC/DC input.

■ The system board integrates the processor, memory, level 2 cache, local bus video

adapter, PCMCIA/CardBus adapter and a udio controller .

Processor

The processor l ocated on the system board for the 120 MH z and 133 MHz models i s t he Intel P54LM Pentium processor.

Memory

Base memory is 16-MB with 8-, 16-, 32-, or 64-MB of optional expansion memory. Base memory is onboar d memory built into the system boar d. Expansion memory consists of one m emory expansion boar d available as a use r installable option.

Cache

Level 2 cache, available on some models, is soldered on the system board. The level 2 cache 256-Kbyte is a pipelined synchronous burst design. It is not user upgradable.

Audio Controller

The audio controller is located on the system board. The audio amplifiers and connectors ar e on the audio board printed circuit assembly.

Computer Removal and Replacement Procedures 7-3

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PCMCIA/CardBus and Video Adapter Controller

The PCMCIA/CardBus adapter i s based on the Texas Inst rument PCI1130 PC t o CardBus controlle r unit. The loca l bus video adapter is the Cirrus CL-G D 7548 controller.

■ The serial-parallel port board expands the serial and paral l el signals from the system

board to the seri al and parallel expansion connectors.

■ The audio board supports the mic rophone and headphone ja cks, the volume control

switches, and t he amplifier a nd equalization circuitry.

7.3.3 Video system

The standard video subsystem consists of :

■ An internal LCD Display

■ 11.3 inch SVGA CSTN display

■ 12.1 inch SVGA CTFT display

■ 1 Megabyte frame buff er

■ 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

■ 40 KByte of Video ROM

7-4 Computer Removal and Replacement Procedures

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7.4 Preparing t he Computer for Disassembly

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

1. Disconnect the AC power and any external devices (Sec tion 7.4.1)

2. Remove the battery pac k (Section 7.4.3).

3. Remove the DualBay device (Section 7. 4.4).

4. Remove any PC Cards (Secti on 7.4.5)

7.4.1 Disconnecting the AC Power

The first procedure tha t should be perfor med on the computer is to disconnec t the power supply and any external devices.

1. Close all applications and turn off the computer.

2. Turn off and disconnect a ny external devices.

3. Disconnect the AC power cord from the power source.

4. Disconnect the AC power from the computer. If the computer is docked i n the convenience base, see Section 7.4.2 for undoc king

instructions.

7.4.2 Undocking the Computer

If the computer is docked i n the convenience base, it must be undocked before performi ng additional work. Complete the following steps to undock the computer. If the computer is not docked in the convenience base, proceed to Section 7.4.3.

1. Disconnect the AC power and any external cables (Section 7.4.1).

2. Close the computer.

3. Pull the docking lever forward to undock the computer.

4. Lift the computer from the convenience base to remove.

Computer Removal and Replacement Procedures 7-5

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7.4.3 Battery Pack

The battery pack should be removed before performing a ny i nternal maintenance on the computer.

WARNING: Metal objects can damage the battery pack as well as the battery contacts

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

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.

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

1. Turn the computer bottom si de up.

2. Slide the battery release latch 1.

3. Remove the battery pack 2.

Figure 7-2. Removing the Battery Pack

7-6 Computer Removal and Replacement Procedures

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To install the battery pack:

1. Insert the battery into the battery compartment.

2. Push firmly until the battery pack is seated into place 1.

Figure 7-3. Inserting the Battery Pack

CAUTION: Installing the battery pack upside down can cause the contacts to break.

Computer Removal and Replacement Procedures 7-7

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7.4.4 DualBay Devices

CAUTION: The device in the DualBay must be removed prior to performing

maintenance on the computer. WARNING: Metal objects can damage the battery pack as well as the battery contacts

in 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 1500 Family of Personal Computers into the battery compartment. Do not force the battery pack if insertion does not occur easily.

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

NOTE: If a battery pack is used in the DualBay, use the battery release latch to release the battery.

Either a diske tte drive or a modular battery pack may be installed into the DualBa y. The device in the DualBay must be removed prior to perform ing maintenanc e on the computer. For convenience, a diskette drive is depicted in this sequence. To remove the DualBay device, complete the following steps:

1. Turn the computer bottom si de up.

2. Pull the diskette drive release latch towards the front of the computer 1.

3. Remove the diskette drive 2.

Figure 7-4. Removing the DualBay Device

7-8 Computer Removal and Replacement Procedures

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7.4.5 PCMCIA

Remove any instal led PC (PCMCIA ) Cards before performing any service on the computer. To remove a PC Card, complete the following steps:

1. Rotate the PC Card eject lever to the forward position 1.

2. Press the PC Card eject button 2.

3. Pull the PC Card out of the PC Card slot 3.

Figure 7-5. Removing the PC Card

To install a PC Card, insert the card into the slot and press firmly until it is seated. NOTE: Before replacing the system board, the PC Card eject levers must be in the

forward posi tion. See Section 7.18 on removing the system board.

Computer Removal and Replacement Procedures 7-9

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7.5 Modem

The modem is standard on some models and an upgra de option availabl e on some models. If the model is not equipped with a modem, the modem compa rtment is se aled off by a pr ot ective plate .

For models equi pped with a modem , complete the following steps for removal.

1. Turn the computer bottom si de up.

2. Remove two screws from the modem access door.

3. Remove the modem access door 1.

4. Carefully pull the mode m board release tab 2.

Figure 7-6. Removing the Modem

To replace or install the modem, reverse the procedure. NOTE: When installing the modem, be sure that the modem release tab is folded on top

of the modem before r e placing the modem access door.

7-10 Computer Removal and Replacement Procedures

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7.6 CD-ROM Drive

The CD-ROM drive is standard on some models and an upgrade option for othe r models. If the model does not ha ve a CD-ROM dri ve, the CD-ROM compartment is sealed off by a protective plate. To remove the CD- ROM drive and access door, complete the following steps:

1. Turn the computer bottom si de up.

2. Remove two screws from the CD-ROM drive access door.

Figure 7-7. Removing the CD-ROM Drive Access Do or

Computer Removal and Replacement Procedures 7-11

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3. Remove the CD-ROM drive.

Figure 7-8. Removing the CD-ROM Drive

To install the CD-ROM drive reverse the procedure.

7-12 Computer Removal and Replacement Procedures

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7.7 Keyboard

To remove the keyboard, complete the f ollowing procedur es.

1. Disconnect the AC power and any external devices (Sec tion 7.4.1).

2. Remove the battery pac k (Section 7.4.3).

3. Remove the DualBay device (Section 7. 4.4).

4. Remove any PC Cards (Secti on 7.4.5).

5. Turn the computer bottom si de up.

6. Remove the screws near the rear of the computer from the battery and DualBay compartments and from the bottom of the base 1. These screws remove the keyboard.

7. Remove the upper screws 2 from the battery and DualBay compartments. These are the remaining base enclosure screws.

Figure 7-9. Removing the Keyboard Screws

Computer Removal and Replacement Procedures 7-13

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8. Turn the computer topside up.

9. Use a case utility tool to carefully lift up the corner of the keyboard.

10. Disconnect the ZIF connector.

Figure 7-10. Lifting the Keyboard

7-14 Computer Removal and Replacement Procedures

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11. Carefully pull the ZIF connector away from the connector 1.

12. Lift the keyboa rd cable strai n relief tab 2 and keyboard from the computer

Figure 7-11. Removing the Keyboard

To replace the keyboard, reverse the steps.

Computer Removal and Replacement Procedures 7-15

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7.8 Memory Board

If a memory expansion board opti on has been previously insta l led in the computer, it must be rem oved before another is installed. To remove the memory board, complete the following steps:

1. Disconnect the AC power and any external devices (Sec tion 7.4.1).

2. Remove the battery pac k (Section 7.4.3).

3. Remove the DualBay device (Section 7. 4.4).

4. Remove any PC Cards (Secti on 7.4.5).

5. Raise the keyboard (Section 7.7).

CAUTION: If you need to remove the memory expansion board, be sure to release the locking tabs that secure the memory board in the slot. If the tabs are not released, the connectors may break and cause irreparable damage to the system board.

6. Release the right 1 and left 2 locking tab at each end of the memory expansion board. This releases the memory board and allows it to rotate upward to ease removal.

Figure 7-12. Releasing the Memory Expansion Board

7-16 Computer Removal and Replacement Procedures

Compaq armada 1500 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Contents