Dell Latitude Xpi Cd Service Manual

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Dell Latitude XPi CD

SERVICE MANUAL

®

Information in this manual is subject to change without notice.

 1994–1996 Dell Computer Corporation. All rights reserved.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, and Latitude are registered trademarks of Dell Computer Corporation; Microsoft, Windows, and MS-DOS are

registered trademarks of Microsoft Corporation; Intel and Pentium are registered trademarks of Intel Corporation; IBM is a registered trademark of International

Business Machines Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer

Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

October 1996 P/N 30269

v

Contents

Chapter 1

System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Indicator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Power/Suspend Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Diskette-Drive Access Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Hard-Disk/CD-ROM Drive Access Indicator. . . . . . . . . . . . . . . . . . . 1-4

PC Card Access Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Low-Battery Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Charging Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Keyboard Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Controlling Computer Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Power States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Interrupt Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Chapter 2

Initial Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Initial User Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Observing the Boot Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Eliminating Resource Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

vi

Chapter 3

Beep Codes and Error Messages . . . . . . . . . . . . . . . . . . 3-1

POST Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

System Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Running the Dell Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Chapter 4

Removing and Replacing Parts . . . . . . . . . . . . . . . . . . . 4-1

Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Screw Identification and Tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

ZIF Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Memory Compartment Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Palmrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Trackball Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Display Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Tilt-Support Foot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Display Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Display Assembly Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Display Assembly Latch and Latch Spring . . . . . . . . . . . . . . . . . . . . . . 4-21

LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

LCD Inverter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Hinge Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Display-Assembly Interface Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

Microphone/Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Bottom Case Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29

Diskette/CD-ROM Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Deck Buoy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Superpart Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Reserve Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36

System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38

Removing the System Board Assembly. . . . . . . . . . . . . . . . . . . . . . 4-39

Replacing the System Board Assembly . . . . . . . . . . . . . . . . . . . . . . 4-40

3.1-V Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41

vii

I/O-Panel Dust Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

Advanced Port Replicator Connector Dust Cover . . . . . . . . . . . . . . . . . 4-43

Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44

Appendix A

Factory Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Factory Repair Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Exploded Views of Components and Assemblies . . . . . . . . . . . . . . . . . . . .A-12

Hard-Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-15

CD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Diskette Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Palmrest Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Trackball . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Trackball Interface Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Trackball Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Palmrest Brace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16

Display Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-17

Display-Assembly EMI Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-17

Display Assembly Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-18

Display Assembly Hinges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-19

System-Board Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-20

System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-20

Keyboard/Keypad/Mouse Connector Shield . . . . . . . . . . . . . . . . . . . . .A-21

I/O Interface Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-22

I/O Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-23

I/O Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-24

Bottom-Case Assembly Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-25

Main Battery Insulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-25

Power Button and Power-Button Mounting Bracket . . . . . . . . . . . . . . .A-26

Spreader and Keel Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-27

Appendix B

System Setup Options . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Accessing the Dell Control Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Accessing the System Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3

viii

Index

Figures

Figure 1-1. Front View of the Notebook Computer. . . . . . . . . . . . . . . . . . 1-2

Figure 1-2. Back View of the Notebook Computer . . . . . . . . . . . . . . . . . . 1-3

Figure 1-3. Indicator Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Figure 4-1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Figure 4-2. Main Battery Assembly Removal . . . . . . . . . . . . . . . . . . . . . . 4-3

Figure 4-3. Screw Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Figure 4-4. Disconnecting an Interface Cable . . . . . . . . . . . . . . . . . . . . . . 4-5

Figure 4-5. Exploded View—Computer . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Figure 4-6. Hard-Disk Drive Assembly Removal . . . . . . . . . . . . . . . . . . . 4-7

Figure 4-7. Memory Compartment Cover Removal . . . . . . . . . . . . . . . . . 4-8

Figure 4-8. Memory Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Figure 4-9. Palmrest Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Figure 4-10. Palmrest-Assembly Retaining Screws. . . . . . . . . . . . . . . . . . 4-11

Figure 4-11. Trackball Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-12. Keyboard Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . 4-14

Figure 4-13. Tilt-Support Foot Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-14. Display Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Figure 4-15. Display Assembly Bezel Removal . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-16. Display Assembly Latch and Latch Spring Removal . . . . . . 4-21

Figure 4-17. LCD Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Figure 4-18. LCD Inverter Board Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Figure 4-19. Hinge Covers Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Figure 4-20. Display-Assembly Interface Cable Removal . . . . . . . . . . . . 4-26

Figure 4-21. Microphone/Switch Assembly Removal. . . . . . . . . . . . . . . . 4-28

Figure 4-22. Bottom Case Assembly Removal . . . . . . . . . . . . . . . . . . . . . 4-30

Figure 4-23. Diskette/CD-ROM Drive Assembly Removal . . . . . . . . . . . 4-31

Figure 4-24. Deck Buoy Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Figure 4-25. Superpart Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Figure 4-26. Reserve Battery Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36

Figure 4-27. System Board Assembly Removal . . . . . . . . . . . . . . . . . . . . 4-38

Figure 4-28. I/O Bracket Clips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40

Figure 4-29. 3.1-V Power Supply Board Removal . . . . . . . . . . . . . . . . . . 4-41

Figure 4-30. I/O-Panel Dust Cover Removal. . . . . . . . . . . . . . . . . . . . . . . 4-42

Figure 4-31. Advanced Port Replicator Connector Dust Cover. . . . . . . . . 4-43

Figure 4-32. Audio Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44

ix

Figure A-1. Exploded View—Display Assembly . . . . . . . . . . . . . . . . . . .A-12

Figure A-2. Exploded View—Palmrest Assembly . . . . . . . . . . . . . . . . . .A-13

Figure A-3. Exploded View—Bottom Case Assembly. . . . . . . . . . . . . . .A-14

Figure A-4. Display-Assembly EMI Shield Removal. . . . . . . . . . . . . . . .A-17

Figure A-5. System Board Assembly in the Bottom Case Assembly . . . .A-20

Figure A-6. Keyboard/Keypad/Mouse Connector Shield Removal . . . . .A-21

Figure A-7. I/O Interface Cable Removal . . . . . . . . . . . . . . . . . . . . . . . . .A-22

Figure A-8. I/O Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-23

Figure A-9. I/O Panel Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-24

Figure A-10. Bottom-Case Assembly Components . . . . . . . . . . . . . . . . . .A-25

Figure A-11. Power Button and Power-Button Mounting Bracket

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-26

Figure A-12. Spreader and Keel Plate Removal . . . . . . . . . . . . . . . . . . . . .A-27

Figure B-1. Dell Control Center Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Figure B-2. Dell Control Center Window . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Figure B-3. System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3

Tables

Table 1-1. Interrupt Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Table 1-2. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Table 3-1. POST Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 3-2. System Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Table A-1. Factory Repair Parts and Assemblies. . . . . . . . . . . . . . . . . . . .A-2

Table B-1. System Setup Program Categories. . . . . . . . . . . . . . . . . . . . . .B-4

R

ead This First

W

arnings, Cautions, and Notes

Throughout this manual, there may be blocks of text printed in bold type or in

italic type. These blocks are warnings, cautions, and notes, and they are used as

follows:

NOTE: A NOTE provides helpful information about using the computer system.

A prerequisite for using this manual to service Dell portable computers is a

basic knowledge of IBM®-compatible PCs and prior training in IBM-

compatible PC troubleshooting techniques. In addition to information

provided in this manual, Dell provides the Reference and Troubleshooting

Guide for troubleshooting procedures and instructions on using the Dell

diagnostics to test portable computers, and the online System User’s Guide

for information about system setup and operations.

WARNING: A WARNING indicates the potential for bodily harm and

provides instructions for how to avoid the problem.

CAUTION: A CAUTION indicates either potential damage to hardware

or loss of data and provides instructions for how to avoid the problem.

x

System Overview 1-1

Chapter 1

System Overview

T

he Dell® Latitude® XPi CD is a lightweight, expandable portable computer

that use the Intel® Pentium® microprocessor. This chapter provides an overview

of the features and technical specifications of this computer.

S

ystem Features

In addition to the standard features found in a Dell portable computer, the Dell

Latitude XPi CD models include the following new features:

•64-bit-wide data bus.

•60-MHz local bus and a 30-MHz PCI bus.

•256-KB pipelined-burst SRAM secondary cache.

•16 MB of nonremovable, EDO-type memory built in to the system board.

Memory can be increased up to 48 MB by installing combinations of 8- and

16-MB fast-page memory modules in the two memory sockets on the sys-

tem board.

•128-bit accelerated graphics adapter with 1.1 MB of integrated video mem-

ory. The integrated video adapter is attached to the PCI bus.

•Full multimedia capability through the following standard features:

— A built-in CD-ROM drive

— MPEG software

— Hardware wavetable support

— SoundBlasterPro-compatible voice and music functions

— Jacks for connecting external speakers, headphones, or a microphone

•Two infrared ports that compatible with the Infrared Data Association

(IrDA) Standard 1.1 (Fast IR) for use with external devices.

•Keyboard with sound and Microsoft® Windows® operating system support.

•Support for two 3.3-V or 5-V PC Cards that adhere to the standards of the

Personal Computer Memory Card International Association (PCMCIA).

The computer supports type I, type II, or type III cards (in any

combination).

For a complete list of system features, see “Technical Specifications” found

later in this chapter.

1-2 Dell Latitude XPi CD Service Manual

P

hysical Description

Figure 1-1. Front View of the Notebook Computer

trackball

assembly

diskette drive

main battery assembly

LCD panel

display assembly

latch

indicator panel

tilt-support foot (2)

keyboard

display assembly

speaker

microphone

infrared port

CD-ROM drive

bottom case assembly

System Overview 1-3

Figure 1-2. Back View of the Notebook Computer

Indicator Panel

Figure 1-3. Indicator Panel

PC Card slot

power switch

hard-disk drive

security

cable slot

DC power input connector

tilt-support foot

Advanced Port

Replicator connector

indicator panel

I/O panel

infrared port

audio jacks (3)

speaker

LCD panel

power/suspend indicator

diskette-drive access indicator

PC Card access indicator

low-battery indicator

charging indicator

Num Lock indicator

Caps Lock indicator

Scroll Lock indicator

Legend

hard-disk/CD-ROM drive

access indicator

1-4 Dell Latitude XPi CD Service Manual

The portable computer has nine indicators: six on the display assembly’s indica-

tor panel and three on the keyboard assembly. Each of the six indicators on the

display assembly has an identical pair of LEDs: one is visible on the indicator

panel when the display is open, and the other is visible through an aperture on

the outside of the display assembly when the display is fully closed. The sub-

sections that follow describe the functions of the indicators.

Power/Suspend Indicator

The power/suspend indicator is a green LED. After the computer is turned on,

the power/suspend indicator lights up constantly to indicate that the computer is

receiving stable power. When the computer enters suspend mode, the indicator

blinks once approximately every 8 seconds.

Diskette-Drive Access Indicator

The diskette-drive access indicator is a green LED. The indicator lights when

data is being transferred to or from the diskette drive.

Hard-Disk/CD-ROM Drive Access Indicator

The hard-disk/CD-ROM drive access indicator is a green LED. The indicator

lights when data is being transferred to or from the hard-disk drive or the

CD-ROM.

PC Card Access Indicator

The PC Card access indicator is a green LED. The indicator lights when data is

being transferred to or from an installed PC Card (also known as a PCMCIA

card).

Low-Battery Indicator

The low-battery indicator is an amber LED. This indicator is used in conjunc-

tion with the speaker to indicate either of the following low-battery conditions:

•The first low-battery warning occurs when the main battery’s charge has

been depleted to 8 percent of its fully charged condition. The low-battery

indicator turns on and the speaker emits five beeps.

•The second and final low-battery warning occurs when the main battery’s

charge has been depleted to 3 percent of its fully charged condition. The

speaker beeps twice every 1 to 2 seconds for 15 seconds; then the system

does a suspend-to-disk operation automatically before shutting down.

Charging Indicator

The charging indicator is an amber LED. The indicator turns on when the main

battery begins charging and blinks to show the battery is fully charged.

System Overview 1-5

Keyboard Indicators

The keyboard controls the operation of the numeric lock (Num Lock) indicator,

the capitals lock (Caps Lock) indicator, and the Scroll Lock indicator, all of

which are visible through apertures at the top of the keyboard. These indicators

are associated with the <NUM LOCK> key, the <CAPS LOCK> key, and the

<SCROLL LOCK> key; when lit, the LEDs indicate the active state of these

keys.

C

ontrolling Computer Power

The power button does not directly control power to the computer. Instead,

when you slide the power button toward the front of the computer and then

release it, the button momentarily closes the power switch on the system board.

The power switch sends a signal to the power management controller, signaling

the controller to initiate a change of state of the computer’s power. The resulting

power state depends on the present power state. The following subsection gives

a description of the power states.

Power States

Sliding the power button toward the front of the computer initiates a change

from the current power state to a different state. The protocols for the power

state changes are as follows:

•If the computer is off (no indicators on) and the display is open and/or an

external monitor is attached to the computer, sliding the power button ini-

tiates a boot operation.

•If the computer is off, if the display is closed, and if no external monitor is

attached, sliding the power button causes the computer to run the POST and

then turn off.

•If the computer is on and the SYSTEM SWITCH option in System Setup is set

to ON/OFF, sliding the power button turns off the computer.

•If the computer is on and the SYSTEM SWITCH option in System Setup is set

to S2D/RFD, sliding the power button causes the computer to enter suspend-

to-disk mode.

•If the computer is in suspend mode (the power/suspend indicator flashes

every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to

ON/OFF, and if the display is open or an external monitor is attached, sliding

the power button turns off the computer.

•If the computer is in suspend mode (the power/suspend indicator flashes

every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to

S2D/RFD, and if the display is open or an external monitor is attached, sliding

the power button causes the computer to enter suspend-to-disk mode.

1-6 Dell Latitude XPi CD Service Manual

•If the computer is in suspend mode (the power/suspend indicator flashes

every 8 seconds), if the display is closed, and if no external monitor is

attached, sliding the power button has no effect on the power state. The

computer remains in suspend mode.

•If the computer is in suspend-to-disk mode, sliding the power button causes

the computer to initiate the resume-from-disk operation.

I

nterrupt Assignments

Table 1-1. Interrupt Assignments

IRQ Line Used/Available

IRQ0 Generated by the system timer

IRQ1 Generated by the keyboard controller to signal that the keyboard

output buffer is full

IRQ2 Generated internally by the interrupt controller to enable IRQ8

through IRQ15

IRQ3 Available for use by a PC Card unless the built-in serial port or

infrared port is configured for COM2 (the default)

IRQ4 Available for use by a PC Card unless the built-in serial port is

configured for COM1 (the default)

IRQ5 Available for use by the audio controller

IRQ6 Generated by the diskette drive controller to indicate that the

diskette drive requires the attention of the microprocessor

IRQ7 Available for use by a PC Card or audio controller if the built-in

parallel port is disabled

IRQ8 Generated by the system I/O controller’s RTC

IRQ9 Available for use by the PC Card interrupt controller or the

audio controller

IRQ10 Available for use by a PC Card or audio controller unless the

Advanced Port Replicator is attached

IRQ11 Available for use by a PC Card unless the Advanced Port Repli-

cator is attached

IRQ12 Generated by the keyboard controller to indicate that the output

buffer of the integrated trackball or external PS/2 mouse is full

IRQ13 Reserved for use by the internal coprocessor

IRQ14 Generated by the hard-disk drive to indicate that the drive

requires the attention of the microprocessor

IRQ15 Reserved for the CD-ROM drive

System Overview 1-7

T

echnical Specifications

Table 1-2. Technical Specifications

Microprocessor

Microprocessor type . . . . . . . . . . . Intel Pentium microprocessor

Microprocessor speed . . . . . . . . . . 150 MHz

Bus architecture . . . . . . . . . . . . . . PCI

Internal cache memory . . . . . . . . . 16 KB

External cache memory. . . . . . . . . 256 KB pipelined-burst SRAM

Math coprocessor . . . . . . . . . . . . . internal to the microprocessor

Chip Set and Bus

System chip set . . . . . . . . . . . . . . . Pico Power Vesuvius-LS Core Logic

Microprocessor data bus width. . . 64 bits

DRAM bus width . . . . . . . . . . . . . 64 bits

Address bus width. . . . . . . . . . . . . 32 bits

Security EEPROM . . . . . . . . . . . . 256 bytes

Flash EPROM. . . . . . . . . . . . . . . . 256 KB

Local bus. . . . . . . . . . . . . . . . . . . . 60 MHz

PCI bus . . . . . . . . . . . . . . . . . . . . . 30 MHz

PC Card

PC Card controller . . . . . . . . . . . . Texas Instruments PCI1130 CardBus

controller

PC Card connectors . . . . . . . . . . . two (supports type I and type II cards in

any combination; type III cards can be

used only with type I or type II cards)

Cards supported . . . . . . . . . . . . . . 3.3-V and 5-V

PC Card connector size. . . . . . . . . 68 pins

Data width (maximum). . . . . . . . . 32 bits

Memory

Architecture . . . . . . . . . . . . . . . . . EDO memory1

Memory module sockets. . . . . . . . two

1The system supports fast-page-mode memory modules for memory upgrades.

1-8 Dell Latitude XPi CD Service Manual

Memory

(Continued)

Memory module type and

capacities . . . . . . . . . . . . . . . . . . . 8- and 16-MB fast-page mode

Standard RAM . . . . . . . . . . . . . . . 16 MB (EDO) on system board

Maximum RAM . . . . . . . . . . . . . . 48 MB

Memory access time:

tRAC . . . . . . . . . . . . . . . . . . . 70 ns

tCAC . . . . . . . . . . . . . . . . . . . 20 ns

BIOS address . . . . . . . . . . . . . . . . F000:0000

Connectors

Serial (DTE) . . . . . . . . . . . . . . . . . one 9-pin connector; 16550-compatible,

16-byte buffer

Parallel . . . . . . . . . . . . . . . . . . . . . one 25-hole connector; unidirectional,

bidirectional, EPP 1.9, or ECP

Monitor. . . . . . . . . . . . . . . . . . . . . one 15-hole connector

PS/2 . . . . . . . . . . . . . . . . . . . . . . . one 6-pin mini-DIN (this connector does

not support more than one device at a time)

Infrared . . . . . . . . . . . . . . . . . . . . . two ports compatible with IrDA

Standard 1.1 (Fast IR)

Audio . . . . . . . . . . . . . . . . . . . . . . microphone-in

line-in/audio-in

headphones/speakers

Advanced Port Replicator . . . . . . 200-pin connector

Audio

Audio type . . . . . . . . . . . . . . . . . . SoundBlasterPro-compatible 3.01

voice and music functions

Audio controller . . . . . . . . . . . . . . ES1888

ES690 wavetable music synthesizer,

ES938 3D audio spatializer

Stereo conversion . . . . . . . . . . . . . 16 bit (analog-to-digital and digital-

to-analog)

FM music synthesizer. . . . . . . . . . 20-voice, 72-operator

Table 1-2. Technical Specifications

(Continued)

System Overview 1-9

Audio

(Continued)

Interfaces:

Internal . . . . . . . . . . . . . . . . . . ISA bus

External. . . . . . . . . . . . . . . . . . stereo line-in minijack

microphone-in minijack

headphones/speakers-out minijack

Speakers . . . . . . . . . . . . . . . . . . . . four 8-ohm speakers

Internal speaker amplifier . . . . . . . 1 W into 8 ohms stereo

Headphones amplifier. . . . . . . . . . 150 mW into 32 ohms stereo

Controls. . . . . . . . . . . . . . . . . . . . . volume can be controlled through key

combinations, software application

menus, or the Speaker window in the Dell

Control Center

Video

Video type . . . . . . . . . . . . . . . . . . . hardware-accelerated, 128-bit PCI

Video controller . . . . . . . . . . . . . . NeoMagic 2090

Integrated video memory . . . . . . . 1.1 MB

Display

Type. . . . . . . . . . . . . . . . . . . . . . . . active-matrix color (TFT)

Dimensions:

Height . . . . . . . . . . . . . . . . . . . 195.0 mm (7.68 inches)

Width. . . . . . . . . . . . . . . . . . . . 272.0 mm (10.7 inches)

Diagonal . . . . . . . . . . . . . . . . . 307.5 mm (12.1 inches)

Maximum resolution. . . . . . . . . . . 800 x 600 pixels; 65,536 colors

Response time (typical) . . . . . . . . 80 ms

Operating angle. . . . . . . . . . . . . . . 0° (closed) to 180°

Dot pitch . . . . . . . . . . . . . . . . . . . . 0.31 mm

Power consumption:

Panel (typical). . . . . . . . . . . . . 0.69 W

Backlight. . . . . . . . . . . . . . . . . 2.10 W

Controls. . . . . . . . . . . . . . . . . . . . . brightness can be controlled through a key

combination, the Display window in the

Dell Control Center, or the System Setup

program

Table 1-2. Technical Specifications

(Continued)

1-10 Dell Latitude XPi CD Service Manual

Keyboard

Number of keys . . . . . . . . . . . . . . 85 (U.S., Canada, Korea, Thailand, and

locations that use traditional Chinese);

86 (Europe);

87 (Japan)

Key travel . . . . . . . . . . . . . . . . . . . 3.0 ± 0.5 mm (0.12 ± 0.02 inch)

Key spacing . . . . . . . . . . . . . . . . . 18.25 mm (0.72 inch)

Layout. . . . . . . . . . . . . . . . . . . . . . QWERTY, AZERTY, Kanji

Battery

Type . . . . . . . . . . . . . . . . . . . . . . . lithium ion

Dimensions:

Height. . . . . . . . . . . . . . . . . . . 20.5 mm (0.81 inch)

Depth . . . . . . . . . . . . . . . . . . . 152.75 mm (6.01 inches)

Width . . . . . . . . . . . . . . . . . . . 78.5 mm (3.09 inches)

Weight. . . . . . . . . . . . . . . . . . . . . . 0.41 kg (0.9 lb)

Voltage . . . . . . . . . . . . . . . . . . . . . 14.4 VDC

Capacity . . . . . . . . . . . . . . . . . . . . 36 WH

Charge time (approximate):2

Computer on. . . . . . . . . . . . . . 2.5 hours

Computer off . . . . . . . . . . . . . 1.5 hours

Operating time (approximate, with no

power management features

enabled)2. . . . . . . . . . . . . . . . . . . . 2 to 3.5 hours (without a CD-ROM drive

in use)

Life span (approximate)2 . . . . . . . 400 discharge/charge cycles

Temperature range:

Charge . . . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)

Discharge . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)

Storage . . . . . . . . . . . . . . . . . . –40° to 65°C (–40° to 149°F)

2Battery performance features such as charge time, operating time, and life span can vary according

to the conditions under which the computer and battery are used.

Table 1-2. Technical Specifications

(Continued)

System Overview 1-11

Battery

(Continued)

NiCad reserve battery:

Voltage . . . . . . . . . . . . . . . . . . 7.2 V

Operating time

(approximate) . . . . . . . . . . . . . 2 minutes (if computer is in battery swap

mode); 40 days (if power is

turned off)

AC Adapter

Input voltage . . . . . . . . . . . . . . . . . 90 to 135 VAC and 164 to 264 VAC

Input current (maximum) . . . . . . . 1.2 A and 0.6 A

Input frequency . . . . . . . . . . . . . . . 47 to 63 Hz

Output current. . . . . . . . . . . . . . . . 4.5 A (maximum);

3.5 A (continuous)

Rated output voltage . . . . . . . . . . . 18.5 VDC

Height . . . . . . . . . . . . . . . . . . . . . . 27.94 mm (1.1 inches)

Width. . . . . . . . . . . . . . . . . . . . . . . 58.42 mm (2.3 inches)

Depth. . . . . . . . . . . . . . . . . . . . . . . 133.35 mm (5.25 inches)

Weight (with cables) . . . . . . . . . . 0.4 kg (0.89 lb)

Temperature range:

Operating . . . . . . . . . . . . . . . . 0° to 40°C (32° to 104°F)

Storage . . . . . . . . . . . . . . . . . . -40° to 70°C (-40° to 158°F)

CD-ROM Drive3

Disc size . . . . . . . . . . . . . . . . . . . . 8 cm and 12 cm (no adapter required)

Data transfer rate:

Sustained. . . . . . . . . . . . . . . . . 900 KB/sec (mode 2 disc)

Burst . . . . . . . . . . . . . . . . . . . . 14.4 MB/sec (PIO mode 3)

Seek time:

Random. . . . . . . . . . . . . . . . . . 200 m/sec

Full-stroke. . . . . . . . . . . . . . . . 500 m/sec

3The CD-ROM drive in your computer may have different specifications.

Table 1-2. Technical Specifications

(Continued)

1-12 Dell Latitude XPi CD Service Manual

CD-ROM Drive3

(Continued)

Access time:

Random . . . . . . . . . . . . . . . . . 250 m/sec

Full-stroke . . . . . . . . . . . . . . . 550 m/sec

Memory buffer . . . . . . . . . . . . . . . 128 KB

Physical (Computer)

Height . . . . . . . . . . . . . . . . . . . . . . 63.0 mm (2.48 inches)

Width . . . . . . . . . . . . . . . . . . . . . . 280.9 mm (11.06 inches)

Depth . . . . . . . . . . . . . . . . . . . . . . 233.5 mm (9.19 inches)

Weight (with battery and

hard-disk drive) . . . . . . . . . . . . . . 3.29 kg (7.26 lb)

Environmental

Temperature:

Operating . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)

Storage . . . . . . . . . . . . . . . . . . -40° to 65°C (-40° to 149°F)

Relative humidity (maximum):

Operating . . . . . . . . . . . . . . . . 90% (noncondensing)

Storage . . . . . . . . . . . . . . . . . . 95% (noncondensing)

Maximum vibration:

Operating . . . . . . . . . . . . . . . . 0.51 GRMS, using a random-vibration

spectrum that simulates truck shipment

Storage . . . . . . . . . . . . . . . . . . 1.1 GRMS, using a random-vibration

spectrum that simulates air/truck

shipment

3The CD-ROM drive in your computer may have different specifications.

Table 1-2. Technical Specifications

(Continued)

System Overview 1-13

Environmental

(Continued)

Maximum shock:4

Operating . . . . . . . . . . . . . . . . 152.4 cm/sec (60 inches/sec) (less than or

equal to a pulse width of 2 ms)

Storage . . . . . . . . . . . . . . . . . . 203.2 cm/sec (80 inches/sec)

(less than or equal to a pulse width of 2 ms)

Altitude (maximum):

Operating . . . . . . . . . . . . . . . . 3048 m (10,000 ft)

Storage . . . . . . . . . . . . . . . . . . 10,600 m (35,000 ft)

4Measured with the hard-disk drive in head-parked position.

Table 1-2. Technical Specifications

(Continued)

1-14 Dell Latitude XPi CD Service Manual

Initial Procedures 2-1

Chapter 2

Initial Procedures

T

his chapter describes initial procedures that can help you diagnose a com-

puter problem. These procedures can often reveal the source of a problem or

indicate the correct starting point for troubleshooting the computer. Dell recom-

mends that you perform these procedures in the order they are presented in this

manual.

I

nitial User Contact

When you first contact a user who has a computer problem, ask the user to

describe the problem and the conditions under which it occurs. A verbal

description can often indicate the cause of a problem or indicate the appropriate

troubleshooting procedure to use. After the user describes the problem, follow

these steps:

1. Ask the user to back up any data on the hard-disk drive if the system’s

condition permits.

See “Maintaining Your Computer” in the online System User’s Guide.

2. Ask the user to try to duplicate the problem by repeating the operations

he or she was performing at the time the problem occurred.

Can the user duplicate the problem?

Yes. Proceed to step 3.

No. Proceed to the next section, “Visual Inspection.”

3. Observe the user to determine whether he or she is making an error,

such as typing an incorrect key combination or entering a command

incorrectly.

Is the problem a result of user error?

Yes. Instruct the user in the proper procedure, or direct him or her to the

appropriate user documentation for a description of the correct procedure.

No. Proceed to the next section, “Visual Inspection.”

V

isual Inspection

The visual inspection consists of a quick inspection of the exterior of the

computer and any attached peripherals, including making any necessary correc-

tions. For information about the proper removal and installation of computer

2-2 Dell Latitude XPi CD Service Manual

components, as instructed in the following procedures, see Chapter 4, “Remov-

ing and Replacing Parts.”

To perform a visual inspection, follow these steps:

1. Turn off any attached peripherals.

2. Determine the present power state of the computer.

Look at the indicators to determine which of the following conditions apply,

and then turn off the computer, taking the actions listed for that condition:

•Power/suspend indicator is blinking approximately every 8 seconds —

The computer is in suspend mode. Open the display and press any key to

return the computer to the power-on state. If the computer does not turn

on, press <FN><B> to return from battery-swap mode. Then slide the

power button to turn off the computer.

•Low-battery indicator is on or blinking — A low-battery warning

occurred; open the display and slide the power button to turn off the

computer.

•Low-battery and charging indicators are both blinking — A defective

battery is detected or the computer is too warm; slide the power button

to turn off the computer.

•All indicators remain off — The computer is already turned off or is in

suspend-to-disk mode.

3. Verify that the exterior of the computer is free of any obvious physical

damage.

4. If the computer is operating from an AC adapter, verify the following:

•The AC adapter’s AC power cable is connected to the AC adapter and

the power source.

•The AC adapter’s DC power cable is properly connected to the com-

puter’s DC power input connector.

•The AC adapter and cables are free of any obvious physical damage.

NOTE: If the charging indicator and low-battery indicator flash continu-

ously while the computer is connected to AC power, disconnect the computer

from AC power and move it to a cooler location. When the computer has

cooled to room temperature, reconnect it to AC power and continue charging

the battery. If the computer is not allowed to cool, the battery stops charging

before it reaches full capacity.

CAUTION: Before you proceed with the visual inspection, ensure that

the user has saved all open files and exited all open application programs

if possible.

Initial Procedures 2-3

5. If the computer is operating from battery power, remove the main bat-

tery assembly, verify that it is free of any obvious physical damage, and

then reinsert the battery assembly into its compartment.

6. Turn off the computer. Remove the hard-disk drive, verify that it is free

of any obvious physical damage, and then reinsert the drive into its

compartment.

7. Remove any installed PC Cards from the PC Card slot, verify that they

are free of any obvious physical damage, and then reinsert the card(s)

into the PC Card slot.

8. Remove any memory modules from the memory compartment, verify

that they are free of any obvious damage, and then reinstall the mem-

ory modules.

9. Open the display assembly, and verify that it is free of any obvious

physical damage.

10. Verify that the internal keyboard is free of any obvious physical dam-

age and that its keys operate freely.

11. Verify that the trackball and its associated switches operate freely.

12. If an external monitor is connected, verify the following:

•The monitor’s interface cable is properly attached to the VGA connector

on the I/O panel.

•The monitor’s power cable is attached to a power source and is free of

any obvious physical damage.

•The monitor’s controls are set according to the instructions in the docu-

mentation for the monitor.

•The monitor and its interface cable are free of any obvious physical

damage.

13. If an external mouse is connected, verify the following:

•The mouse is properly connected to the keyboard/keypad/mouse con-

nector on the computer’s I/O panel.

•The mouse and its cable are free of any obvious physical damage.

•The mouse’s ball and push buttons operate freely.

14. For any attached serial or parallel devices, verify the following:

•The device’s interface cable connector is correctly attached to the appro-

priate port connector on the computer’s I/O panel.

•The captive screws that secure the connectors at each end of the inter-

face cable are secure enough to ensure a firm connection.

•The attached device and its interface cable are free of any obvious phys-

ical damage.

2-4 Dell Latitude XPi CD Service Manual

15. Turn on any attached peripherals and then the computer.

Does the problem reoccur?

Yes. Proceed to the next procedure, “Observing the Boot Routine.”

No. No further steps are necessary.

O

bserving the Boot Routine

After you perform a visual inspection as described in the previous section, boot

the computer from a diagnostics diskette and, while the boot routine is running,

observe the computer for any indications of problems.

NOTE: To prevent possible damage to the original diagnostics diskette, always

use a backup copy of the diagnostics diskette when servicing a user’s computer.

Dell recommends that users make copies of the Dell diagnostics diskette. For

instructions, see “Before You Start Testing” in Chapter 4 of the Reference and

Troubleshooting Guide.

To observe the boot routine, follow these steps:

1. Turn off the computer and any attached peripherals.

2. Insert a diagnostics diskette into the diskette drive. Turn on all periph-

erals and then the computer.

3. Watch the indicators on the top of the keyboard. After all three indica-

tors flash momentarily, the Num Lock indicator should light up and

remain on.

Do these indicators light up within approximately 10 seconds after the boot

routine starts?

Yes. Proceed to step 4.

No. Troubleshoot the power subsystem.

4. While the boot routine is running, observe the computer for any of the

following:

•Diskette-drive and hard-disk drive access indicators — These indicators

light in response to data being transferred to or from the drives. If either

of these indicators fail to light during the boot routine, troubleshoot the

diskette-drive or hard-disk drive subsystem, as appropriate.

•Beep codes — A beep code is a series of beeps that indicates an error

condition. If the computer emits a beep code, go to Table 3-1.

NOTE: The computer beeps once during the boot routine. This single

beep is normal and is not a beep code.

•System error messages — These messages can indicate problems or

provide status information. If a system error message displays, go to

Table 3-2.

Initial Procedures 2-5

5. Observe the display for the Diagnostics Menu.

Does the Diagnostics Menu display?

Yes. See “Running the Dell Diagnostics” in Chapter 3.

No. Proceed to step 6.

6. Insert another copy of the diagnostics diskette into the diskette drive,

and reboot the computer.

Does the Diagnostics Menu display?

Yes. See “Running the Dell Diagnostics” in Chapter 3.

No. Proceed to the next section, “Eliminating Resource Conflicts.”

E

liminating Resource Conflicts

Devices within the computer may require dedicated memory spaces, interrupt

levels, or DMA channels, all of which must be allocated during installation of

the devices. Because a device may be installed at a different time, it is possible

that the same resource is assigned to two or more devices.

Resource conflicts can result in disorderly or erratic computer operation or fail-

ure of the computer to operate at all. If you suspect that resource conflicts might

exist, check the computer and reassign the resources as necessary.

For more information about resolving conflicts, see Chapter 3, “Troubleshoot-

ing Your Computer,” in the Reference and Troubleshooting Guide.

G

etting Help

If none of the procedures in this chapter reveal the source of the problem or lead

to the proper troubleshooting steps for determining the source of the problem,

call Dell for technical assistance. For instructions, see Chapter 5, “Getting

Help,” in the Reference and Troubleshooting Guide.

2-6 Dell Latitude XPi CD Service Manual

Beep Codes and Error Messages 3-1

Chapter 3

Beep Codes and Error Messages

T

his chapter describes beep codes and system error messages that can occur

during computer start-up or, in the case of some failures, during normal com-

puter operation. The tables in this chapter list faults that can cause a beep code

or system error message to occur and the probable causes of the fault in each

case.

If a faulty computer does not emit beep codes or display system error messages

to indicate a failure, use the Dell diagnostics to help isolate the source of the

problem. See “Running the Dell Diagnostics” found later in this chapter.

P

OST Beep Codes

If the display cannot display error messages during the POST, the computer

may emit a series of beeps that identifies the problem or that can help you iden-

tify a faulty component or assembly. The following table lists the beep codes

that may be generated during POST. Most beep codes indicate a fatal error that

requires replacement of the system board or other corrective actions before the

computer can operate.

Table 3-1. POST Beep Codes

Beep Code Error Probable Causes

1-1-3 NVRAM write/read

failure BIOS corrupted; system board

faulty

1-1-4 ROM BIOS checksum

failure BIOS corrupted; system board

faulty

1-2-1 Programmable interval

timer failure System board faulty

1-2-2 DMA initialization

failure System board faulty

1-2-3 DMA page register

write/read failure System board faulty

1-3-1

through

2-4-4

Installed memory

module(s) not being

properly identified or

used

Memory module improperly seated

or system memory controller faulty

(system board faulty)

3-2 Dell Latitude XPi CD Service Manual

3-1-1

3-1-2

Slave DMA register

failure

Master DMA register

failure

System board faulty

3-1-3

3-1-4

Master interrupt mask

register failure

Slave interrupt mask

register failure

System board faulty

3-2-4 Keyboard controller test

failure Keyboard assembly faulty or system

board faulty

3-3-4

3-4-1

3-4-2

Display memory test

failure

Display initialization

failure

Display retrace test

failure

System board faulty

4-2-1

4-2-2

4-2-3

4-2-4

No timer tick

Shutdown failure

Gate A20 failure

Unexpected interrupt in

protected mode

System board faulty

4-3-1 Memory failure above

address 0FFFFh Memory module improperly seated

or system memory controller faulty

(system board faulty)

4-3-3 Timer chip counter 2

failure System board faulty

4-3-4 Time-of-day clock

stopped Reserve battery faulty or system

board faulty

4-4-1 Serial port failure System board faulty

4-4-2 Parallel port test failure System board faulty

4-4-3 Math coprocessor

failure System board faulty

Table 3-1. POST Beep Codes

(Continued)

Beep Code Error Probable Causes

Beep Codes and Error Messages 3-3

S

ystem Error Messages

The following table lists (in alphabetical order) system error messages that may

appear on the display during the boot routine or during normal computer

operation.

5-1-1

5-1-2

5-1-3

5-2-1

5-2-2

5-2-3

5-2-4

System power-

management interrupt

initialization failure

BIOS shadowing

failure

Video BIOS shadowing

failure

Keyboard controller

download failure

CPU stepping failure

System board failure

Setup decompression

and shadowing failure

System board faulty

Table 3-2. System Error Messages

Message Definition Probable Causes

Auxiliary

device failure Integrated trackball or

external PS/2 mouse failed. Integrated trackball

or external PS/2

mouse faulty.

Bad command or

File Name Command entered

does not exist or is not

in pathname specified.

Bad command or

filename entered.

Cache disabled

due to failure Microprocessor’s internal

cache memory failed. System board faulty.

Data error Diskette or hard-disk

drive cannot read the

data.

Faulty diskette/tape

drive subsystem or

hard-disk drive sub-

system.

Table 3-1. POST Beep Codes

(Continued)

Beep Code Error Probable Causes

3-4 Dell Latitude XPi CD Service Manual

Decreasing

available

memory

Informational message

indicating memory is fail-

ing (usually preceded by

memory error message).

One or more DIMMs

faulty or improperly

seated.

Disk C: failed

initialization Hard-disk drive failed to

initialize. Hard-disk drive data

in System Setup

does not match

installed hard-disk

drive, or hard-disk

drive faulty.

System files missing

or corrupted.

Diskette drive 0

seek failure

Diskette read

failure

System cannot read dis-

kette in diskette drive. Diskette faulty or

incorrectly inserted

in drive.

System Setup con-

tains incorrect

settings.

Diskette drive inter-

face loose or faulty.

Diskette drive faulty.

Diskette sub-

system reset

failed

Diskette subsystem failed

to respond to reset com-

mand from computer.

System board faulty.

Diskette write-

protected Diskette is write-

protected, operation

cannot be completed.

Diskette write-

protected.

Drive not ready The diskette may be

missing from or

improperly installed in

the diskette drive.

Defective or unfor-

matted diskette.

Error reading

PCMCIA card Computer cannot identify

PC Card. PC Card faulty,

improperly seated,

or improperly con-

figured. System

board faulty.

PC Card software

faulty or incorrectly

installed.

Table 3-2. System Error Messages

(Continued)

Message Definition Probable Causes

Beep Codes and Error Messages 3-5

Extended memory

size has changed Amount of memory

recorded in NVRAM not

matching memory

installed in computer.

One or more mem-

ory module(s) faulty

or improperly

seated.

Gate A20 failure Computer cannot enable

protective mode. One or more mem-

ory module(s) faulty

or improperly

seated.

System board faulty.

General failure Message indicates sys-

tem failure. Operating system

unable to carry out

the command.

Hard-disk drive

configuration

error

Computer cannot identify

hard-disk drive type. Installed hard-disk

drive not compatible

with computer.

Hard-disk drive

controller

failure 0

Hard-disk drive or control-

ler not responding to

commands from computer.

System board faulty.

Hard-disk drive

controller

failure 0

The CD-ROM drive does

not respond to commands

from the computer.

System board faulty.

Hard-disk drive

failure

Hard-disk drive

read failure

Hard-disk drive not

responding to commands

from computer.

Computer needs

rebooting.

Hard-disk drive

faulty.

Invalid

configuration

information —

please run

System Setup

program

System Setup contains

invalid settings. Incorrect settings in

System Setup.

Reserve battery

weak or depleted.

Keyboard con-

troller failure Keyboard controller not

responding. Cable or connector

loose, or keyboard

faulty.

Keyboard clock

line failure

Keyboard data

line failure

Keyboard not responding. Cable or connector

loose, or keyboard

faulty.

Table 3-2. System Error Messages

(Continued)

Message Definition Probable Causes

3-6 Dell Latitude XPi CD Service Manual

Keyboard stuck

key failure Keyboard key(s) jammed. For external key-

board or keypad,

cable or connector

loose or keyboard

faulty.

For built-in key-

board, keyboard

faulty.

For either keyboard,

key may have been

pressed while com-

puter was booting.

Memory address

line failure at

address

, read

value

expecting

value

Memory control logic not

operating properly. Installed memory

module faulty or

improperly seated.

Memory alloca-

tion error The software in use

conflicts with the

operating system, an

application program,

or a utility

Faulty application

program

Table 3-2. System Error Messages

(Continued)

Message Definition Probable Causes

Beep Codes and Error Messages 3-7

Memory data line

failure at

address

, read

value

expecting

value

Memory double

word logic fail-

ure at a

ddress

,

read

value

expecting

value

Memory odd/even

logic failure

at

address

,

read

value

expecting

value

Memory write/

read failure at

address

, read

value

expecting

value

Memory not operating

properly. Installed memory

module faulty or

improperly seated.

No boot device

available Computer not recognizing

diskette drive or hard-disk

drive from which it is try-

ing to boot.

No boot device

available.

No boot sector

on hard-disk

drive

No boot sector on hard-

disk drive. Operating system

boot files missing or

corrupted.

No timer tick

interrupt Timer on system board

malfunctioning. System board faulty.

Non-system disk

or disk error

Not a boot dis-

kette

Unable to boot from hard-

disk drive or diskette drive. No operating

system files on hard-

disk drive or

diskette.

Optional ROM

bad checksum ROM in external device

failed. Optional ROM in

external device

faulty.

Sector not found MS-DOS® unable to

locate a sector on dis-

kette or hard-disk

drive.

Bad sector or cor-

rupted FAT on

diskette or hard-disk

drive.

Table 3-2. System Error Messages

(Continued)

Message Definition Probable Causes

3-8 Dell Latitude XPi CD Service Manual

R

unning the Dell Diagnostics

The diagnostics contains tests that aid in troubleshooting the computer. If

needed, see Chapter 4, “Running the Dell Diagnostics,” in the Reference and

Troubleshooting Guide. The diagnostics diskette contains the following test groups:

•RAM — Tests the main memory

•System Set — Tests the system board’s primary functions

•Video — Tests the video subsystem

•Keyboard — Tests the keyboard subsystem

•Mouse — Tests the mouse/trackball subsystem

•Diskette Drives — Tests the diskette drive subsystem

•Hard-Disk Drives (Non-SCSI) — Tests the IDE hard-disk drive subsystem

•IDE CD-ROM Drives — Tests the CD-ROM drive subsystem

Seek error MS-DOS unable to

find specific track on

diskette or hard-disk

drive.

Defective diskette

or hard-disk drive.

Shutdown fail-

ure Microprocessor unable to

reset. System board faulty.

Time-of-day

clock lost power

Time-of-day

clock stopped

System clock stopped. Reserve battery lost

its charge.

Time-of-day not

set—please run

the System Setup

program.

Time or date stored in RTC

does not match system

clock.

Reserve battery lost

its charge.

System board faulty.

Timer chip

counter 2 failed Timer circuit on system

board malfunctioning. System board faulty.

Unexpected

interrupt in

protected mode

Keyboard/mouse control-

ler malfunctioning, or

memory module(s) not

responding.

One or more mem-

ory module(s) faulty

or improperly

seated.

Warning! Bat-

tery is criti-

cally low.

Main battery has lost its

charge. Main battery needs

recharging.

Table 3-2. System Error Messages

(Continued)

Message Definition Probable Causes

Beep Codes and Error Messages 3-9

•Serial Ports — Tests the serial communication port

•Parallel Ports — Tests the parallel communication port

•SCSI Devices — Tests the SCSI controller in the Advanced Port

Replicator

•Network Interface — Tests the network controller in the Advanced Port

Replicator

•Serial Infrared — Tests the IrDA communications port

•Audio — Tests the built-in sound subsystem

To start the diagnostics, turn off the computer, insert a diagnostics diskette into

the diskette drive, and then turn on the computer.

Starting the diagnostics causes the Dell logo screen to appear, followed by a

message indicating that the diagnostics is loading. Before the diagnostics loads,

a program tests the portion of main memory (RAM) required for loading the

diagnostics. If a main memory error is detected, a message appears on the

screen telling you which memory address failed.

If no errors are found in main memory, the diagnostics loads and the Diagnos-

tics Menu appears. This menu lets you choose the following options or exit to

the MS-DOS prompt:

•RUN QUICK TESTS — Runs selected tests from all test groups to quickly

locate the failure or to indicate where further testing may be needed to iso-

late a failure

•RUN ALL TESTS — Runs all tests for a thorough test of the computer

•RUN SPECIFIC TESTS — Tests a particular area or subsystem

CAUTION: To prevent possible damage to the original diagnostics dis-

kette, always use a backup copy of the diagnostics diskette when servicing a

user’s system. If the user has not already made a backup copy of the diagnostics

diskette, do so before you run the diagnostics.

3-10 Dell Latitude XPi CD Service Manual

Removing and Replacing Parts 4-1

Chapter 4

Removing and Replacing Parts

T

his chapter provides instructions for removing and replacing field-

replaceable components, assemblies, and subassemblies. For removal and

replacement procedures for factory-replaceable parts, see Appendix A,

“Factory Repair Parts.”

Unless otherwise noted, each procedure in this chapter assumes the following:

•The computer and any attached peripherals are turned off, and the peripher-

als are disconnected from the I/O panel on the back of the computer.

•A part can be replaced by performing the removal procedure in reverse

order.

When the display assembly is open nearly 180 degrees, use a book or something

similar to support the display assembly. The angle of the display assembly with

respect to the bottom case should never be allowed to exceed 180 degrees. Also,

when performing the procedures in this chapter, the locations or directions rela-

tive to the computer are as shown in Figure 4-1 unless otherwise specified.

Figure 4-1. Computer Orientation

right side

left side

back of computer

front of computer

4-2 Dell Latitude XPi CD Service Manual

R

ecommended Tools

Most of the procedures in this guide require the use of one or more of the fol-

lowing tools:

•Small flat-blade screwdriver

•Jeweler’s screwdriver set

•Number 1 magnetized Phillips-head screwdriver

•Number 2 magnetized Phillips-head screwdriver

•Chip-removal tool

•Wrist grounding strap

•Small plastic scribe

•Nut drivers

P

recautionary Measures

Before you start to work on the computer, perform the following steps:

1. Turn off the computer and any attached peripherals.

NOTE: Make sure the computer is turned off and not in suspend-to-disk

mode. See “Controlling Computer Power” in Chapter 1.

2. Disconnect the computer and any attached peripherals from AC power

sources to reduce the potential for personal injury or shock. Also dis-

connect any telephone or telecommunications lines from the computer.

3. Remove the main battery assembly from the battery compartment.

Slide the battery compartment door downward until it stops (about

3/16 of an inch). Slide the main battery assembly out.

WARNING: FOR YOUR PERSONAL SAFETY AND PROTECTION

OF THE EQUIPMENT, PERFORM THE FOLLOWING STEPS IN

THE SEQUENCE LISTED.

Removing and Replacing Parts 4-3

Figure 4-2. Main Battery Assembly Removal

4. To avoid possible damage to the computer from ESD, ground yourself

by attaching a wrist grounding strap to yourself and an unpainted

metal surface on the I/O panel.

If a wrist grounding strap is not available, you can discharge static electric-

ity from your body by periodically touching the unpainted metal surface of

the I/O panel.

Part or Assembly Name Order Name

Main battery assembly CUS,BTRY,SAR,36WHR,LXP

battery door

battery

4-4 Dell Latitude XPi CD Service Manual

S

crew Identification and Tightening

Figure 4-3. Screw Identification

The removal procedure illustrations provide the correct screw length in

parentheses next to the screw’s label. Also, a graphic for that length screw is

included in the illustration. Match the actual screw to the graphic in the illustra-

tion to check for correct length.

CAUTION: It is essential that the correct length screw be used when

reinstalling a screw. Otherwise, hardware damage could result. Make

sure that the screw is properly aligned with its corresponding hole, and

avoid overtightening.

A6 (35 mm)

(screw A6 is 35 mm)

match length here

35 mm

Removing and Replacing Parts 4-5

Z

IF Connectors

Figure 4-4. Disconnecting an Interface Cable

Some of the computer’s interface connectors are zero insertion force (ZIF) con-

nectors. These connectors are not removable, but they must be released to

disconnect a cable from them.

To disconnect an interface cable from a ZIF connector, follow these steps:

1. Insert a small flat-blade screwdriver or a chip-removal tool under the

movable part of the connector.

If a small flat-blade screwdriver is unavailable, use a chip-removal tool to

carefully pry up on first one end of the movable part of the connector and

then the other end.

2. Pull gently upward on the movable part of the connector until it

releases the interface cable.

3. Grasp the interface cable and pull it out of the connector.

To reconnect an interface cable to a ZIF connector, follow these steps:

1. Use a flat-blade screwdriver or chip-removal tool to open the movable

part of the ZIF connector.

2. Orient the end of the interface cable with the ZIF connector, and insert

the end of the cable into the connector.

3. While holding the cable in place, close the ZIF connector.

To ensure a firm connection, make sure the ZIF connector is completely

closed.

CAUTION: The ZIF connectors are fragile. To avoid damage, do not

apply too much pressure to the movable part of the connector.

movable part of

connector;

do not remove

4-6 Dell Latitude XPi CD Service Manual

F

ield-Replaceable Parts and Assemblies

Figure 4-5. Exploded View—Computer

The computer is divided into three major assemblies: the palmrest assembly

(which contains the keyboard and the trackball), the display assembly (which

contains the LCD), and the bottom case assembly (which contains many of the

removable parts).

display assembly

keyboard

I/O panel dust cover

dust cover for the Advanced

Port Replicator connector

right tilt-support foot

main battery

left tilt-support foot

PC Card

memory compartment cover CD-ROM/diskette

drive assembly

palmrest assembly

bottom case assembly

superpart assembly

trackball assembly

CD-ROM

EMI clip

keyboard EMI clip

hard-disk

drive assembly

Removing and Replacing Parts 4-7

The following subsections provide instructions for removing and replacing

these parts and assemblies. Some of the instructions are preceded by a table list-

ing the Dell order name for the part or assembly being replaced. A more

detailed breakdown of parts and assemblies can be found in Appendix A, “Fac-

tory Repair Parts.”

Hard-Disk Drive Assembly

Figure 4-6. Hard-Disk Drive Assembly Removal

To remove the hard-disk drive assembly, follow these steps:

1. Slide the drive latch toward the front of the computer to release the

hard-disk drive assembly from the hard-disk drive bay.

The latch is on the left-front corner of the computer.

2. Grasp the drive door and pull the drive out of the computer.

When reinserting the drive into the drive bay, ensure that the drive latch is open.

Then slide the drive completely into the hard-disk drive bay.

Part or Assembly Name Order Name

Hard-disk drive assembly CUS,HD,xxxxx,yyMM,zzz,LXP*

* Substitute the drive capacity for xxxxx, the drive height for yy, and the

manufacturer for zzz.

CAUTION: The hard-disk drive is very sensitive to shock. Handle the

assembly with care and avoid dropping it even from a height of 1 inch.

drive latch

front of computer

drive door

PC Card slot

hard-disk drive

4-8 Dell Latitude XPi CD Service Manual

Memory Compartment Cover

Figure 4-7. Memory Compartment Cover Removal

To remove the memory compartment cover, follow these steps:

1. Turn the computer upside down on the work surface.

2. To release the memory compartment cover, press down on the identa-

tion in the edge of the cover, and then slide the cover towards the edge

of the computer.

Part or Assembly Name Order Name

Memory compartment cover CVR,MEM,LXPiCD

CAUTION: Make sure the work surface is clean to prevent scratching

the computer cover.

memory compartment

cover

Removing and Replacing Parts 4-9

Memory Modules

Figure 4-8. Memory Module Removal

To remove a memory module, follow these steps:

1. Remove the memory compartment cover.

2. To release a memory module from its socket, gently push outward on

each of the memory module’s two metal retaining clips.

The memory module should rotate upward out of its retaining clips.

3. Lift the memory module out of its socket.

Memory modules can be installed only one way. Do not attempt to force the

memory module into the socket. Align the notch in one corner of the memory

module with the corresponding indent in the memory module socket.

Part or Assembly Name Order Name

Memory module, 4-MB CUS,MEM,4M,LXP4D/T,LXPi

Memory module, 8-MB CUS,MEM,8M,LXP4D/T,LXPi

Memory module, 16-MB CUS,MEM,16M,LXP4D/T,LXPi

memory module

sockets

4-10 Dell Latitude XPi CD Service Manual

P

almrest Assembly

The palmrest assembly consists of the trackball and the keyboard.

Figure 4-9. Palmrest Assembly Removal

To remove the palmrest assembly, follow these steps:

1. Remove any installed PC Card(s).

2. Disconnect any cables attached to the audio ports.

3. Remove the hard-disk drive assembly.

Part or Assembly Name Order Name

Palmrest assembly with sound SVC,ASSY,PLMRST,LXPiCD

CAUTION: Make sure the work surface is clean to prevent scratch-

ing the computer cover.

connector JTB

connector JKB1

connector JKB2

palmrest assembly

display assembly

trackball cable

trackball assembly

keyboard

bottom case assembly

CD-ROM EMI

clip

Removing and Replacing Parts 4-11

4. Close the display assembly, and turn the computer upside down on a

flat work surface.

5. Remove the three palmrest-assembly retaining screws A1, A2, and A3

(see Figure 4-10).

Figure 4-10. Palmrest-Assembly Retaining Screws

6. Turn the computer right-side up on the work surface, and open the dis-

play assembly.

NOTE: Remember to support the display assembly with a book or similar

object so that the display assembly does not open beyond 180 degrees.

7. Release the palmrest assembly from the bottom case assembly (see Fig-

ure 4-9).

To release the palmrest assembly, lift the front of the assembly upward with

one hand approximately 1 inch. Then, with the fingers of the other hand,

disconnect the trackball cable from LIF connector JTB.

8. Rotate the front of the palmrest assembly towards the display assembly.

9. Disconnect the two keyboard cables from ZIF connectors JKB1 and

JKB2.

10. Carefully lift the palmrest assembly from the bottom case assembly.

The keyboard is captured in the palmrest by snaps and tabs.

A1 (35 mm)

A2 (35 mm)

A3 (35 mm)

35 mm

4-12 Dell Latitude XPi CD Service Manual

To reseat the palmrest assembly on the bottom case assembly, set the palmrest

assembly down, slightly forward of its original position, on top of the bottom

case assembly. Then push down on all sides of the palmrest assembly while

sliding the assembly toward the back of the computer.

Ensure that the palmrest assembly is properly aligned and fully seated on the

bottom case assembly and that all of the mounting tabs are fully engaged. Then

close the display assembly, turn the computer upside down on the work surface,

and reinstall retaining screws A1, A2, and A3 (see Figure 4-10).

CAUTION: Be careful not to bend the CD-ROM EMI clip. Set the palm-

rest assembly top side down, when the palmrest assembly is free from

the bottom case assembly.

Removing and Replacing Parts 4-13

Trackball Assembly

Figure 4-11. Trackball Assembly Removal

To remove the trackball assembly, follow these steps:

1. Remove the palmrest assembly.

2. Turn the palmrest assembly upside down on a flat work surface.

3. Remove screws A4 and A5.

4. Lift the trackball assembly out of the palmrest assembly.

NOTE: It is not necessary to remove the trackball button board when

removing the trackball assembly.

Part or Assembly Name Order Name

Optical trackball assembly SVC,ASSY,TBALL/SWT,LXPi+

palmrest assembly

A4 (6 mm)

trackball assembly

A5 (6 mm)

6 mm

trackball cable

4-14 Dell Latitude XPi CD Service Manual

Keyboard Assembly

Figure 4-12. Keyboard Assembly Removal

Part or Assembly Name Order Name

Keyboard assembly, Belgium KYBD,86,BEL,ALPS,LXPi+

Keyboard assembly, China KYBD,85,CHI,ALPS,LXPi+

Keyboard assembly, domestic SVC,KYBD,85,DOM,LXPi+

Keyboard assembly, Danish KYBD,86,DEN,ALPS,LXPi+

Keyboard assembly, French KYBD,86,FR,ALPS,LXPi+

Keyboard assembly, French/

Canadian KYBD,85,FR,CAN,ALPS,LXPi+

Keyboard assembly, German KYBD,86,GER,ALPS,LXPi+

Keyboard assembly, Japan KYBD,87,JPN,LXPi+

Keyboard assembly, Korean KYBD,85,KOREA,ALPS,LXPi+

Keyboard assembly, Latin American KYBD,86,LTN,ALPS,LXPi+

Keyboard assembly, Norwegian KYBD,86,NOR,ALPS,LXPi+

Keyboard assembly, Russian KYBD,86,RUS,ALPS,LXPi+

Keyboard assembly, Spanish KYBD,86,SPN,ALPS,LXPi+

Keyboard assembly, Swedish KYBD,86,SWE,ALPS,LXPi+

trackball assembly

press

press

keyboard

palmrest

assembly

Removing and Replacing Parts 4-15

To remove the keyboard assembly, follow these steps:

1. Remove the palmrest assembly.

2. Press along the sides of the keyboard to release the keyboard from the

palmrest assembly.

Part or Assembly Name Order Name

Keyboard assembly, Swiss KYBD,86,SWI,ALPS,LXPi+

Keyboard assembly, Thailand KYBD,85,THAI,ALPS,LXPi+

Keyboard assembly, United

Kingdom KYBD,84,UK,LXPi+

4-16 Dell Latitude XPi CD Service Manual

D

isplay Assembly

For removal procedures, the display assembly consists of the following:

•Tilt-support foot

•Display assembly bezel

•Display assembly latch and latch spring

•LCD panel

•LCD inverter board

•Hinge covers

•Display-assembly interface cable

•Microphone/switch assembly

Tilt-Support Foot

Figure 4-13. Tilt-Support Foot Removal

Part or Assembly Name Order Name

Tilt-support foot, left FOOT,PLSTC,REAR,LF,LXPiCD

Tilt-support foot, right FOOT,PLSTC,REAR,RT,LXPiCD

right tilt-support foot

10 mm

finger-access recess

foot retaining screw (10 mm)

cover

tab

notch

Removing and Replacing Parts 4-17

To remove a tilt-support foot, follow these steps:

1. Close the display assembly.

2. With the foot set to its fully retracted position, insert a small device

(such as a scribe) into the bottom notch on the foot-retaining screw

cover and gently lift out the cover partway. Lift on the sides of the

cover, working around to the top, and then lift out the cover.

3. Remove the foot retaining screw.

The foot retaining screw also functions as a mounting screw for one of the

display assembly hinges, which has a threaded hole for the screw.

Therefore, the foot retaining screws cannot be reinstalled with the display

assembly removed.

The foot-retaining screw cover can fit only one way in the foot. To reinstall

the cover, make sure the tilt-support foot is in its fully retracted position.

Then orient the cover with the notch toward the bottom of the computer and

its mounting tab toward the top of the computer. Press in on the cover until

it snaps into place.

4-18 Dell Latitude XPi CD Service Manual

Display Assembly

Figure 4-14. Display Assembly Removal

To remove the display assembly, follow these steps:

1. Remove the palmrest assembly.

2. Remove the computer’s tilt-support feet.

3. Remove interface-cable grounding screws C1 and C2 from the

display assembly.

Part or Assembly Name Order Name

Display assembly ASSY,LCD,TFT,SVGA,12.1”,

LXPiCD

C1 (6 mm)

connector JLCD connector JMIC

6 mm

left tilt-support foot

right tilt-support foot

detent post

display assembly

C2 (6 mm)

Removing and Replacing Parts 4-19

4. Disconnect the display-assembly interface cable from connector JLCD

on the system board.

To disconnect the cable, grasp the pull tab and pull it straight up from the

system board.

5. Disconnect the microphone cable from ZIF connector JMIC.

6. Lift the display assembly from the bottom case assembly.

A plastic detent post located approximately at the center of the display

assembly may hang on the bottom case assembly. If so, carefully push the

center of the display assembly away from the bottom case assembly.

4-20 Dell Latitude XPi CD Service Manual

Display Assembly Bezel

l

Figure 4-15. Display Assembly Bezel Removal

To remove the display assembly bezel, follow these steps:

1. Use a scribe to pry the retaining screw covers out of the screw holes in

the bezel.

2. Remove retaining screws H1, H2, H3, and H4.

3. Separate the bezel from the display assembly.

Insert your fingertips between the bezel and the LCD, and lift upward on the

bezel to release the hidden tabs just above the indicator panel, as well as the

hidden tabs beneath each side of the bezel. Then slide the bezel toward the

front of the computer, and lift it up and away from the display assembly.

When replacing the bezel, orient the bezel in its original position on the display

assembly and press firmly near each tab until it snaps into position. Be careful

to have the display latch and spring properly assembled.

Part or Assembly Name Order Name

Bezel service kit, 12.1-inch SVC,BZL,LCD,TFT,LXPiCD

Display case service kit, 12.1-inch SVC,CVR,BK,TFT,LXPi+

screw covers (4)

H1 (10 mm)

H2 (10 mm)

H3 (10 mm)

H4 (10 mm)

10 mm

display assembly bezel

display

assembly

base

hinge

Removing and Replacing Parts 4-21

Display Assembly Latch and Latch Spring

Figure 4-16. Display Assembly Latch and Latch Spring Removal

To remove the display assembly latch and latch spring, follow these steps:

1. Remove the display assembly bezel.

2. Turn the display assembly bezel upside down on the work surface.

3. While holding down the display-assembly latch spring, slide the latch

against the spring, rotate the latch upward, and lift the latch and spring

out of the bezel.

Part or Assembly Name Order Name

Display assembly latch LTCH,LXPiCD

Display assembly latch spring SPR,LTCH,LXPiCD

latch

latch spring

display assembly

bezel

4-22 Dell Latitude XPi CD Service Manual

LCD Panel

Figure 4-17. LCD Panel Removal

Part or Assembly Name Order Name

LCD panel LCD,TFT,SVGA,12.1”,SAMSUNG

LCD assembly, LCD inverter board,

active-matrix color, TFT SVGA

display

SVC,LCD/INVTR,TFT,LXPiCD

LCD panel

LCD power cable

connector CN2

LCD inverter board

display assembly case

interface connector

interface cable

Removing and Replacing Parts 4-23

To remove the LCD panel, follow these steps:

1. Remove the display assembly bezel.

2. Lift the lower edge of the LCD panel about 1 inch.

3. Disconnect the LCD-assembly power cable from connector CN2 on the

LCD inverter board.

4. Lift the lower edge of the LCD panel approximately 3 inches.

5. Disconnect the display-assembly interface cable from the LCD interface

connector on the underside of the LCD panel.

6. Lift the LCD panel out of the display assembly case.

4-24 Dell Latitude XPi CD Service Manual

LCD Inverter Board

Figure 4-18. LCD Inverter Board Removal

To remove the LCD inverter board, follow these steps:

1. Remove the display assembly bezel.

2. Remove screws I1 and I2 securing the display-interface cable retaining

bracket, and then remove the bracket.

3. Move the LED board out of the display assembly case far enough to

gain access to the LCD inverter board.

4. Disconnect the LCD-inverter board interface cable from ZIF connector

CN1 on the LCD inverter board.

5. Lift the LCD inverter board about 1/4 of an inch.

6. Disconnect the LCD power cable from connector CN2 on the LCD

inverter board.

7. Lift the LCD inverter board out of the display assembly case.

Part or Assembly Name Order Name

LCD inverter board ASSY,BD,INVRTR,TFT,SVGA12.1”

retaining bracket

I1 (5 mm)

I2 (5 mm) 5 mm

LED board

inverter board

display assembly case

connector CN1

connector CN2

Removing and Replacing Parts 4-25

Hinge Covers

Figure 4-19. Hinge Covers Removal

Each of the hinge covers is held in place by three tabs that fit into slots on the

display assembly base. The microphone is inside the right hinge cover. To

remove the hinge covers, follow these steps:

1. Remove the display assembly from the computer.

2. Place the display assembly faceup on the work surface.

3. Rotate the display assembly base until the display assembly hinges are

pointing upward at approximately a 45-degree angle.

4. To remove a hinge cover, press in on the front of the cover to release the

hinge cover’s front tab. Then rotate the cover in the direction of the

arrow, and lift the cover away from the display assembly base.

To replace the hinge covers, set the display assembly base in the position

shown, and reinsert the hinge cover into its original position, making sure that

its two tab slots engage the tabs on the display assembly base. Then rotate the

hinge cover opposite to the direction shown in Figure 4-18 until its front tab

engages the tab slot in the display assembly base.

display

assembly

base

hinge

hinge cover

4-26 Dell Latitude XPi CD Service Manual

Display-Assembly Interface Cable

Figure 4-20. Display-Assembly Interface Cable Removal

The display-assembly interface cable connects the system board, LCD panel,

LCD inverter board, and LED board. The cable wraps around a bobbin. To

remove the display-assembly interface cable, follow these steps:

1. Remove the display assembly.

2. Remove the display assembly bezel.

3. Remove the LCD panel.

4. Remove the left hinge cover.

5. Remove screws I1 and I2 securing the display-interface cable retaining

bracket, then remove the bracket.

6. Disconnect the display-assembly interface cable from ZIF connector

CN1 on the LCD inverter board.

Part or Assembly Name Order Name

LCD cables, active-matrix, TFT

SVGA display (includes display-

assembly interface, LED board, and

LCD-inverter-board interface

cables)

SVC,CBL,LCD,TFT,SAMSUNG,

LXPiCD

I1 (5 mm)

I2 (5 mm)

connector CN1

bobbin 5 mm

alignment marks

on cable

retaining bracket

alignment notch

in shoulder

LED board

display-assembly interface cable

Removing and Replacing Parts 4-27

7. Lift the display-assembly interface cable and bobbin out of the display

assembly.

NOTE: Some computers have a display-assembly interface cable that detaches

from the bobbin. If you have a cable with a permanently attached bobbin, stop

here; otherwise, proceed to Step 8.

8. Look at the alignment marks on the display-assembly interface cable,

and note the alignment of the cable to the bobbin. Then carefully detach

the cable from the bobbin.

A double-sided adhesive strip attaches the cable to the bobbin (see

Figure 4-20).

9. To reattach the display-assembly interface cable to the bobbin, align the

marks on the cable with the notch in the shoulder of the bobbin, and

then wrap the cable around the bobbin.

If you are installing a new cable, remove the protective cover from the adhesive

strip on the new cable. Align the alignment marks on the cable with the notch in

the shoulder of the bobbin, and then wrap the cable around the bobbin, making

sure it stays between the shoulders of the bobbin. Place the cable and bobbin

into the display assembly before attaching the EMI shield.

4-28 Dell Latitude XPi CD Service Manual

Microphone/Switch Assembly

Figure 4-21. Microphone/Switch Assembly Removal

The microphone/switch assembly is inside the right hinge cover. There is a

microphone and a magnetic reed switch on the microphone/switch assembly. To

remove the microphone/switch assembly, follow these steps:

1. Remove the display assembly.

2. Remove the right hinge cover. (Before doing so, note the correct routing

of the microphone cable around the display assembly base.)

3. Remove the microphone cover from the right hinge cover.

4. Open the microphone cover, and remove the microphone/switch

assembly.

Part or Assembly Name Order Name

Microphone service kit SVC,MIPHN/SWT,LXPiCD

microphone/switch assembly

right hinge cover

microphone cover

microphone/switch cable

magnet switch

Removing and Replacing Parts 4-29

B

ottom Case Assembly

The bottom case assembly consists of the following:

•Diskette/CD-ROM assembly

•Deck-buoy

•Superpart assembly

•System board

•3.1-V power supply board

•I/O-panel dust cover

•Dust cover for the Advanced Port Replicator

•Audio board

4-30 Dell Latitude XPi CD Service Manual

Figure 4-22. Bottom Case Assembly Removal

Part or Assembly Name Order Name

Bottom case assembly ASSY,CVR,BTM,LXPiCD

bottom case assembly

system board assembly

memory compartment cover

I/O bracket clip

I/O bracket clip

superpart

assembly

3.1-V power supply

spreader plate

diskette/CD-ROM assembly

audio board

keel plate

I/O panel

dust cover

dust cover for the

Advanced Port

Replicator

superpart

serial EMI clip

superpart docking EMI clip

Removing and Replacing Parts 4-31

Diskette/CD-ROM Drive Assembly

Figure 4-23. Diskette/CD-ROM Drive Assembly Removal

To remove the diskette/CD-ROM drive assembly, follow these steps:

1. Remove the palmrest assembly.

2. Remove screws D1 and D2 securing the diskette/CD-ROM drive assem-

bly to the bottom case assembly.

3. Lift the back of the drive assembly slightly, and then slide the drive

assembly toward the back of the computer about 1/4 of an inch

Part or Assembly Name Order Name

Diskette drive assembly SVC,ASSY,FD,LXPiCD

CD-ROM drive assembly SVC,ASSY,CDROM,LXPiCD

diskette drive

CD-ROM drive

connector JCDROM

connector JFLOP

D1 (4 mm)

D2 (4 mm) 4 mm

D3 (2 mm) D4 (2 mm)

D5 (2 mm)

D6 (2 mm)

2 mm

CD-ROM flex cable

bracket

bottom case assembly

tab

D7 (2 mm)

D8 (2 mm)

D9 (2 mm)

plastic flip lock

4-32 Dell Latitude XPi CD Service Manual

4. Lift the drive assembly straight up about 1 inch.

The front edge of the drive assembly engages tabs on the bottom case

assembly. Make sure the diskette drive assembly is clear of the tab before

attempting to lift it out of the bottom case assembly.

5. Disconnect the diskette drive and CD-ROM drive interface cables from

connectors JFLOP and JCDROM on the system board.

6. Lift the drive assembly out of the bottom case assembly.

When replacing the drive assembly, first connect the two drive interface cables

to the system board. Then lower the drive assembly into the bottom case assem-

bly, beginning with its forward edge, so that the diskette drive board fits

between the tabs in the corner of the bottom case assembly.

To separate the diskette/CD-ROM assembly into a diskette drive and a

CD-ROM drive, remove screws D3 through D9. Lift up the CD-ROM, and

remove it from the assembly. Slide the CD-ROM flex cable out of the slot in the

bracket that holds the CD-ROM to the diskette drive.

CAUTION: Before removing the diskette drive and CD-ROM drive

interface cables from connectors JFLOP and JCDROM, release each

connector’s plastic flip lock (see Figure 4-23). Do not pull the interface

cable from the connector; doing so can ruin the cable’s electrical

conductivity.

CAUTION: Use care when handling the diskette/CD-ROM drive; it is

fragile and will bend if handled improperly. Place the assembly on a flat

work surface, and carefully remove the small 2-mm screws. Do not bend

either the drives or the bracket. If bending occurs, the diskette or

CD-ROM will not function correctly when inserted in the drive.

Removing and Replacing Parts 4-33

Deck Buoy

Figure 4-24. Deck Buoy Removal

To remove the deck buoy, follow these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the diskette/CD-ROM assembly.

4. Remove screws B1, B2, and B3.

Lift the deck buoy out of the bottom case assembly.

Part or Assembly Name Order Name

Deck buoy ASSY,CLMP,THRM,LXPiCD

B1 (10 mm)

B2 (10 mm)

B3 (10 mm)

bottom case assembly

10 mm

deck buoy

4-34 Dell Latitude XPi CD Service Manual

Superpart Assembly

Figure 4-25. Superpart Assembly Removal

The superpart assembly includes two speakers, two fans, the reserve battery, a

printed circuit board for those parts, and an infrared printed circuit board. To

remove the superpart assembly, follow these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the diskette-drive/CD-ROM assembly.

4. Remove the deck-buoy.

Part or Assembly Name Order Name

Superpart assembly SVC,ASSY,FAN/SPKR,

BRKT,LXPiCD

bottom case assembly

B4 (25 mm)

25 mm

superpart

assembly

thermal tape

Removing and Replacing Parts 4-35

5. Remove screw B4.

Lift the superpart assembly out of the bottom case assembly.

CAUTION: To prevent tearing the thermal tape, slowly pull the super-

part assembly away from the system board.

4-36 Dell Latitude XPi CD Service Manual

Reserve Battery

Figure 4-26. Reserve Battery Removal

Part or Assembly Name Order Name

Reserve battery SVC,BTRY,RSRV,LXP

CAUTION: The reserve battery provides power to the computer’s RTC

and NVRAM when the computer is turned off. Removing the battery

causes the computer to lose its date and time information as well as user-

settable parameters in the NVRAM. If possible, make a copy of this

information before you remove the reserve battery.

reserve

battery

connector JRBAT

F1 (3 mm)

F2 (3 mm)

F3 (3 mm)

F4 (3 mm)

speaker/

fan bracket

superpart

middle tab

3 mm

speaker (2)

speaker (2)

superpart

serial EMI

clip

superpart docking EMI clip

Removing and Replacing Parts 4-37

To remove the reserve battery, follow these steps:

1. Remove the palmrest assembly.

2. Remove the superpart assembly.

3. Remove the superpart docking EMI clip and the superpart serial EMI

clip.

4. Unplug the battery from connector JRBAT.

5. Place the superpart assembly upside down on a flat work surface.

6. Remove screws F1 through F4.

Remove the speaker/fan bracket protecting the speakers and fan.

7. Lift the battery out of its recess in the superpart assembly.

To free the reserve battery, thread the battery cable and connector through

the opening in the plastic superpart assembly.

CAUTION: When replacing the speaker/fan bracket, be sure to rein-

stall the middle tab correctly.

4-38 Dell Latitude XPi CD Service Manual

System Board Assembly

Figure 4-27. System Board Assembly Removal

The system board’s BIOS chip contains the system service tag number, which is

also visible on a bar-code label on the bottom of the computer. The replacement

kit for the system board assembly includes a diskette that provides a utility for

transferring the service tag number to the replacement system board assembly.

Part or Assembly Name Order Name

System board assembly SVC,SYS,PLN,LXPiCD-150ST,

WB,0M

CAUTION: Dell uses the system’s service tag number to maintain a his-

tory of the computer and its maintenance services. Do not neglect to

transfer the service tag number to the replacement system board assem-

bly (see step 3 of “Replacing the System Board Assembly” found later in

this section).

system board assembly

bottom case assembly

SB1 (5 mm)

SB2 (5 mm)

5 mm

main battery

connector

battery

compartment

PC Card

ejectors

molded tabs (3)

I/O docking EMI clip

I/O serial EMI clip

Removing and Replacing Parts 4-39

Removing the System Board Assembly

To remove the system board assembly, follow these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the diskette/CD-ROM assembly.

4. Verify that the PC Card ejectors are fully depressed.

5. Remove the deck buoy plate. (Reinstall this part on the new system

board.)

6. Remove the superpart assembly.

Carefully disengage the superpart docking EMI and serial EMI clips from

the I/O docking EMI and serial EMI clips.

7. Remove screws SB1 and SB2, which retain the system board (see

Figure 4-27).

8. Lift the system board approximately 2 inches from the back of the

computer.

9. Disengage the front of the system board from the three molded tabs in

the bottom case assembly.

The tabs’ approximate location is shown in Figure 4-27. The tabs are

located alongside the hard-disk drive compartment, inside the bottom case

assembly.

10. Lift the system board assembly out of the bottom case assembly.

NOTE: If the main battery insulator comes out with the system board assem-

bly, detach the insulator and set it aside.

CAUTION: To ensure maximum cooling for the microprocessor, do

not touch the heat transfer area on the system board above the micro-

processor or on the deck buoy plate. The oils in your skin reduce the

heat transfer of the thermal pads.

CAUTION: When removing the system board assembly, be careful

not to damage the main battery connector and EMI shield on the bot-

tom of the assembly.

4-40 Dell Latitude XPi CD Service Manual

Replacing the System Board Assembly

Observe the following precautions when you reinstall a system board:

1. Before reinstalling the system board assembly, make sure the upper I/O

bracket clip and the side I/O bracket clip are in place. If the side I/O

bracket clip has been dislodged, reinstall it as shown in Figure 4-27.

Figure 4-28. I/O Bracket Clips

2. While reinstalling the system board assembly, make sure the power

button is positioned as far as it will go toward the back of the computer.

This will ensure that the power button engages the power switch properly.

3. Enter the system’s service tag number into the BIOS of the replacement

system board assembly.

Insert the diskette that accompanied the replacement system board assembly

into the diskette drive, and turn on the computer. Follow the instructions on

the display screen.

CAUTION: To avoid possible damage to the computer, make sure the

system board assembly is inserted under the three molded tabs at the

front of the bottom case assembly.

I/O bracket clip

Removing and Replacing Parts 4-41

3.1-V Power Supply Board

Figure 4-29. 3.1-V Power Supply Board Removal

To remove the 3.1-V power supply board, follow these steps:

1. Remove the palmrest assembly

2. Remove the superpart assembly.

3. Remove the 3.1-V power supply board from the system board.

The power supply board is held in place on the system board by connectors

JPS1 and JPS2.

Part or Assembly Name Order Name

3.1-V power supply board CRD,PWR SPLY,LXPiCD,V3.1,NBK

connector JPS1

connector JPS2

bottom case assembly

system board

power supply board

with insulator

4-42 Dell Latitude XPi CD Service Manual

I/O-Panel Dust Cover

Figure 4-30. I/O-Panel Dust Cover Removal

To remove the I/O-panel dust cover, follow these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the superpart assembly.

4. Remove the system board.

5. Remove the I/O-panel dust cover.

Push outward on one end of the dust cover to release the pivot pin from its

associated pivot hole. Then repeat the operation for the other end of the

cover. After both ends have been disengaged, lift the dust cover away from

the system board assembly.

To replace the I/O-panel dust cover, orient the cover in its original position and

snap the pivot pins into place in their associated pivot holes. Make sure the dust

cover opens and closes freely before you reinstall the display assembly.

Part or Assembly Name Order Name

I/O-panel dust cover DOOR,PLSTC,I/O,LXP/NBK

I/O-panel

dust cover

pivot pin (2)

pivot hole (2)

Removing and Replacing Parts 4-43

Advanced Port Replicator Connector Dust Cover

Figure 4-31. Advanced Port Replicator Connector

Dust Cover

To remove the dust cover for the Advanced Port Replicator connector, follow

these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the dust cover.

Part or Assembly Name Order Name

Advanced Port Replicator

connector dust cover CVR,DOOR,DOCKING,LXP

Advanced Port

Replicator connec-

tor dust cover

4-44 Dell Latitude XPi CD Service Manual

Audio Board

Figure 4-32. Audio Board Removal

To remove the audio board, follow these steps:

1. Remove the palmrest assembly.

2. Remove the display assembly.

3. Remove the superpart assembly.

4. Remove the system board.

5. Remove the hard-disk drive bracket.

Turn the system board over and place it on a flat work surface. Remove

screw HD1, which secures the bracket to the system board. Turn the system

board over so that the bracket is on the top. Use a plastic scribe or a small

flat-blade screwdriver to pry the bracket from connector JTB. Gently push

the bracket outward from the system board until the bracket is disengaged

from the audio connectors, and lift the bracket away from the system board.

6. Lift the audio board straight up from the system board.

The audio board is held in place on the system board by connector JAUDIO.

Part or Assembly Name Order Name

Audio board PWA,AUDIO,LXPiCD,NBK

6 mm

connector JTB

audio

board

audio

connectors

system board

hard-disk

drive bracket

HD1 (6 mm)

connector JAUDIO

connector board

Factory Repair Parts A-1

Appendix A

Factory Repair Parts

T

his appendix provides procedures for removing and replacing factory com-

ponents and subassemblies at a service facility. (Dell does not recommend

removal and replacement of factory components and subassemblies in the field.

For removal and replacement procedures for field-replaceable parts, see Chap-

ter 4, “Removing and Replacing Parts.”)

R

ecommended Tools

Most of the procedures in this appendix require the use of one or more of the

following tools:

•Small flat-blade screwdriver

•Jeweler’s screwdriver set

•Number 1 magnetized Phillips-head screwdriver

•Number 2 magnetized Phillips-head screwdriver

•Chip-removal tool

•Wrist grounding strap

•Small plastic scribe

•Nut drivers

P

recautionary Measures

Before you begin working on the computer, read about the precautionary mea-

sures, screw identification, and computer orientation outlined at the beginning

of Chapter 4, “Removing and Replacing Parts.”

F

actory Repair Parts and Assemblies

Table A-1 lists the factory repair parts and assemblies available for the com-

puter. The subsections that follow Table A-1 provide instructions for removing

and replacing these parts and assemblies.

A-2 Dell Latitude XPi CD Service Manual

Table A-1. Factory Repair Parts and Assemblies

Part or Assembly Name Order Name Figure

AC Adapter and Power Cords

AC adapter ADPT,AC,EXT,18V,65W,LXP

Power cable, U.S. CORD,PWR,110V,6F,AC

ADPT,US

Power cable, Europe CORD,PWR,220V,6F,AC

ADPT,EUR

Power cable, Australia CORD,PWR,220V,6F,AC

ADPT,AUS

Power cable, U.K. CORD,PWR,220V,6F,AC

ADPT,UK

Audio

Audio board service kit SVC,ASSY,AUD BD/SPKR,

LXPi+ 4-32

Microphone service kit SVC,ASSY,MIPHN,LXPi+CD 4-21

Microphone/switch

assembly ASSY,MIPHN/SWT,LXPi+CD 4-21

Magnet switch SWT,MGNT,ENCL,SPST,

LXPiCD 4-21

Microphone/switch

cable CBL,FPC,MIC/SW,LCD,12.1" 4-21

Technical booklet DOC,SERV,GDE,XPi+

Batteries

Reserve battery SVC,BTRY,RSRV,LXP 4-26

Battery, reserve BTRY,RSV,LXP

Technical booklet TSH,SERV,LXP

Factory Repair Parts A-3

Batteries

(Continued)

Main battery assembly CUS,BTRY,SAR,36WHR,LXP 4-2

Main battery BTRY,MAIN,36WH,LXP/XPi

Technical booklet TSH,BTRY,LXP

CD-ROM Drive Assembly

CD-ROM drive assembly SVC,ASSY,CD,LXPiCD 4-23

CD-ROM bezel BZL,CD,PLSTC,LXPiCD

CD-ROM bezel

assembly SUBASSY,BZLPLSTC,CD,

LXPiCD

CD-ROM bezel

spring SPR,FL,CLP,CD BZL,

LXPiCD

CD-ROM drive CD,627M,I,INT,CC,LXPiCD

CD-ROM drive

cable CBL,FPC,CD,LXPiCD

Eject button BTN,EJCT,CD,LXPiCD

Screws, diskette/

CD-ROM drive

bracket

SCR,M2X2MM,PHH,MS,ZPS,N

BK

Diskette Drive Assembly

Diskette drive assembly SVC,ASSY,FD,LXPiCD 4-23

Diskette drive FD,1.44M,F3,LXPiCD

Diskette drive cable CBL,FPC,FD,LXPiCD

Eject button BTN,EJCT,FD,LXPiCD

Technical booklet DOC,SERV,GDE,XPi+

Screws, diskette/

CD-ROM drive

bracket

SCR,M2X2MM,PHH,MS,ZPS,

NBK

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

A-4 Dell Latitude XPi CD Service Manual

Diskette Drive Assembly

(Continued)

Diskette/CD-ROM drive

assembly SUBASSY,FD/CD,LXPiCD 4-23

Diskette/CD-ROM bracket BRKT,FD,AL,RT,LXPiCD 4-23

Hard-Disk Drive Assemblies

Hard-disk drive assembly CUS,HD, xxxxx,yy,MM,zzz,

LXP*4-6

Hard-disk drive,

subassembly SUBASSY,HD,xxxxx,yy,MM,

zzz,LXP*

Hard-disk

drive HD,xxxxx,yy,MM,zzz,REV2*

Hard-disk

drive bracket BRKT,HD,LXP

Hard-disk

drive mount-

ing screws

SCR,M3X4,BIND/PHH,BL

OXIDE

Hard-disk

drive

insulator

INSUL,yyMM,LXP*

Technical booklet TSH,HD,LXP

Keyboards

Keyboard assembly,

Belgium KYBD,86,BEL,ALPS,LXPi+ 4-5

Keyboard assembly, China KYBD,85,CHINA,ALPS,

LXPi+ 4-5

Keyboard assembly,

domestic SVC,KYBD,85,DOM,LXPi+ 4-5

Keyboard assembly, Danish KYBD,86,DEN,ALPS,LXPi+ 4-5

Keyboard assembly, French KYBD,86,FR,ALPS,LXPi+ 4-5

* Substitute your drive capacity for xxxxx, your drive height for yy, and the

manufacturer for zzz.

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

Factory Repair Parts A-5

Keyboards

(Continued)

Keyboard assembly,

French/Canadian KYBD,85,FR,CAN,ALPS,LXPi+ 4-5

Keyboard assembly,

German KYBD,86,GER,ALPS,LXPi+ 4-5

Keyboard assembly, Japan KYBD,87,JPN,LXPi+ 4-5

Keyboard assembly, Korean KYBD,85,KOREA,ALPS,LXPi+ 4-5

Keyboard assembly, Latin KYBD,86,LTN,ALPS,LXPi+ 4-5

Keyboard assembly,

Norwegian KYBD,86,NOR,ALPS,LXPi+ 4-5

Keyboard assembly,

Russian KYBD,86,RUS,ALPS,LXPi+ 4-5

Keyboard assembly,

Spanish KYBD,86,SPN,ALPS,LXPi+ 4-5

Keyboard assembly,

Swedish KYBD,86,SWE,ALPS,LXPi+ 4-5

Keyboard assembly, Swiss KYBD,86,SWI,ALPS,LXPi+ 4-5

Keyboard assembly,

Thailand KYBD,85,THAI,ALPS,LXPi+ 4-5

Keyboard assembly, U.K. KYBD,84,UK,LXPi+ 4-5

LCD Assemblies

LCD panel, LCD inverter

board, active-matrix color,

TFT SVGA display

SVC,LCD/INVTR,TFT,

LXPi+CD

LCD panel LCD,TFT,SVGA,12.1”,

SAMSUNG 4-17

LCD inverter board ASSY,BD,INVTR,TFT,SVGA,

12.1” 4-17

Technical booklet DOC,SERV,GDE,XPi+

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

A-6 Dell Latitude XPi CD Service Manual

LCD Assemblies

(Continued)

LCD/LED/inverter board

cable, service kit, active-

matrix color, TFT SVGA

display

SVC,CBLS,LCD,TFT,SAM-

SUNG,LXPi+CD

Display-assembly

interface cable CBL,FPC,LED/INVRTR,TFT,

12.1” 4-20

Display-assembly

interface cable bob-

bin, 12.1-inch

BBN,LCD,TFT,12.1” 4-20

Technical booklet DOC,SERV,GDE,XPi

Bezel service kit, 12.1-inch SVC,BZL,LCD,TFT,LXPiCD 4-15

Display assembly bezel

12.1-inch ASSY,LCD,BZL,12.1” 4-15

Display-assembly latch

spring SPR,LTCH 4-16

Technical booklet DOC,SERV,GUIDE,LXPi

Display case service kit,

12.1-inch SVC,CVR,BK,TFT,LXPi+

Display assembly case,

12.1-inch ASSY,LCD,CVR,BK,TFT,12.1” 4-17

Technical booklet DOC,SERV,GUIDE,LXPi

Display assembly latch ser-

vice kit, 12.1-inch SVC,LTCH,DIS,TFT,LXPi+

Display assembly latch,

12.1-inch LTCH,LCD,STN/TFT,LXP 4-16

Display-assembly latch

spring, 12.1-inch SPR,LTCH 4-16

Technical booklet DOC,SERV,GUIDE,LXPi

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

Factory Repair Parts A-7

LCD Parts

Hinge cover, right CVR,HNG,RT,MIPHN,LXPi+ 4-21

Hinge cover, left CVR,HNG,LXP

Display assembly base ASSY,CVR,BTM,DIS,LXPiCD 4-19

Left hinge HNG,LCD,LFT,TFT,12.1" 4-15

Right hinge HNG,LCD,RT,TFT,12.1" 4-19

Display-assembly-bezel re-

taining screw covers, lower CVR,LCD,LWR,LXPiCD 4-15

Display-assembly-bezel re-

taining screw covers, upper BMPR,UPR,LCD,LXPiCD 4-15

Display-assembly EMI

shield 12.1-inch SHLD,LCD,MET,TFT,12.1” A-4

Memory

Memory module, 4-MB,

customer kit CUS,MEM,4M,LXP4D/T,

LXPi 4-9

Memory module,

4-MB SIMM,4MB,LXP

Technical booklet TSH,DIMM INSTL,LXP

Memory module, 8-MB,

customer kit CUS,MEM,8M,LXP4D/T,

LXPi 4-9

Memory module,

8-MB DIMM,8M,2X32,TL,LXP

Technical booklet TSH,DIMM INSTL,LXP

Memory module, 16-MB,

customer kit CUS,MEM,16M,LXP4D/T,

LXPi 4-9

Memory module,

16-MB SIMM,16MB,LXP

Technical booklet TSH,DIMM INSTL,LXP

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

A-8 Dell Latitude XPi CD Service Manual

Miscellaneous Parts

CD-ROM EMI clip CLP,EMI,CD,LXPiCD 4-5

Keyboard EMI clip CLP,EMI,KYBD,LXPiCD 4-5

Superpart serial EMI clip CLP,EMI,SER,SUPERPRT,

I/O,LXPiCD 4-5

Superpart docking EMI clip CLP,EMI,DOCK,SUPERPRT,

I/O,LXPiCD 4-5

Memory compartment

cover CVR,MEM,LXPiCD 4-7

PCMCIA blank INSR,BLNK,PCMCIA,LXP 4-5

PCMCIA blank, type III INSR,BLNK,PCMCIA,

TYP 3,LXPiCD 4-5

Tilt-support-foot retaining

screw cover CVR,REAR,FOOT,LXP 4-12

Advanced Port Replicator

connector dust cover CVR,DOOR,DOCKING,LXP 4-31

Tilt-support foot, left FOOT,PLSTC,REAR,LF,

LXPiCD 4-5

Tilt-support foot, right FOOT,REAR,RT,LXP 4-5

I/O panel dust cover DOOR,PLSTC,I/O,LXP/NBK 4-30

Main battery insulator CVR,MYLAR,BTRY,CVTY,

LXPiCD A-10

I/O bracket, hinge GSKT,I/O BRKT,BTM,EMI,

LXPi

Superpart assembly SVC,ASSY,FAN/SPKR,

BRKT,LXPiCD 4-33

Spreader plate PLT,SPRDR,BTM,LXPiCD A-12

Spreader plate spacer SPCR,TOP SPRDR,PORON,

LXPiCD A-12

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

Factory Repair Parts A-9

Miscellaneous Parts

(Continued)

Keel plate ASSY,PLT,KEEL,LXPiCD A-12

Deck buoy ASSY,CLMP,THRM,LXPiCD 4-24

Microphone insulator

bracket INSUL,PLSTC,MIPHN/

SWT,LXPiCD

Bottom case assembly CVR,BTM,BLK,LXPi 4-22

Power button BTN,PWR SWT,LXP A-11

Power-button mounting

bracket GDE,PWR SWT,PLSTC,LXPi A-11

Memory compartment

cover CVR,MEM,LXPi+CD 4-5

Palmrest Assembly

Palmrest service kit SVC,ASSY,PLMRST,

LXPi+CD

Palmrest assembly SUBASSY,PLMRST,LXPi+CD 4-9

Technical booklet DOC,SERV,GUIDE,LXPiCD

Screws

Screws service kit SVC,SCR,LXP

3 mm, black SCR,2mmX3mm,PHH,MS,

BLO,LXP B2

3 mm, gold SCR,2mmX3mm,PHH,MS,

NON,LXP B8

4 mm, black SCR,2.6mmX4mm,PHH,MS,

BLO,LXPB7

5 mm, black SCR,2.6mmX5mm,PHH,MS,

BLO,LXPB3

5 mm, gold SCR,2.6mmX5mm,PHH,MS,

NON,LXP B8

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

A-10 Dell Latitude XPi CD Service Manual

Screws

(Continued)

6 mm, black SCR,2mmX6mm,PHH,MS,

BLO,LXP B6

8 mm, gold SCR,2.6mmX8mm,PHH,MS,

ZPS

10 mm, gold SCR,2.5mmX10mm,PHH,MS,

NON,LXP5

10 mm, black SCR,2mmX10mm,PHH,MS,

BLO,LXP B9

10 mm, black SCR,M2X.4x10mm,PHH,

MS,BLO

25 mm, black SCR,2.6mmX25mm,PHH,MS,

BLO,LXP1

System Board Assemblies

System board assembly,

LXPi CD, 150-MHz,

service kit

SVC,SYS,PLN,

LXPiCD- P150ST,WB,0M 4-27

System board sub-

assembly, LXPi CD,

150-MHz

ASSY,PLN,LXPiCD-150ST,

WB,0M

BIOS access door CVR,PLSTC,BIOS,LXPiCD

BIOS chip IC,EEPROM,256X8,150NS,

PLCC

Audio board PWA,AUDIO,LXPiCD,NBK 4-32

Hard-disk

drive bracket BRKT,GDE,HD,LXP 4-32

Connector

board, hard-

disk drive

PWA,HD CON,LXPiCD,NBK 4-32

Power supply

board CRD,PWR SPLY,LXPiCD,

V3.1,NBK 4-29

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

Factory Repair Parts A-11

System Board Assemblies

(Continued)

System

board,

150-MHz

PWA,PLN,LXPiCD-150ST,

NBK

I/O interface

cable CBL,I/O TO M/B,LXPiCD A-7

Bracket, I/O BRKT,I/O,LXPi

Serial EMI

clip, I/O CLP,EMI,SER,I/O,XPiCD

Docking

EMI clip, I/O CLP,EMI,DOCK,I/O,XPiCD

Diskette, field

service DSK,FLD SERV,F3,US, LXP

Technical booklet,

service DOC,SERV,GUIDE,LXPi

Trackball

Optical trackball assembly SVC,ASSY,TBALL/SWT,

LXPi+CD 4-11

Trackball interface

cable CBL,TBALL,LXPi+CD 4-11

Trackball

subassembly SUBASSY,TBALL,OPTICAL,

LXPiCD

Trackball

board PWA,TBALL,OPTICAL,

LXPiCD A-2

Trackball TBALL,OPTICAL,LXPiCD A-2

Trackball

button board SUBASSY,TBALL,SWT BD,

LXPiCD A-2

Technical booklet DOC,SERV,GUIDE,LXPi

Table A-1. Factory Repair Parts and Assemblies

(Continued)

Part or Assembly Name Order Name Figure

A-12 Dell Latitude XPi CD Service Manual

E

xploded Views of Components and Assemblies

Figure A-1. Exploded View—Display Assembly

display assembly bezel

latch

LCD panel

LCD power cable

interface cable

LCD inverter board

display assembly case

EMI shield

display assembly hinges (2)

hinge covers (2)

Factory Repair Parts A-13

.

Figure A-2. Exploded View—Palmrest Assembly

keyboard

keyboard

cables (2)

trackball interface cable

trackball

palmrest

plastic housing

trackball button board

palmrest

brace

trackball ring

trackball board connector J1

CD-ROM

EMI clip

A6 (4 mm)

A7 (4 mm) A8 (4 mm)

A9 (4 mm)

4 mm

A-14 Dell Latitude XPi CD Service Manual

.

Figure A-3. Exploded View—Bottom Case Assembly

bottom case

assembly

system board assembly

memory compartment cover

I/O bracket clip

superpart

assembly

3.1-V power supply

spreader plate

diskette/CD-ROM assembly

audio board

key buoy plate

I/O panel dust cover

dust cover for the Advanced

Port Replicator

superpart

serial EMI clip

superpart

docking EMI clip

Factory Repair Parts A-15

H

ard-Disk Drive

The hard-disk drive resides in a carrier that mounts inside the computer’s

hard-disk drive bay. Four screws secure the drive inside the carrier. A mylar

insulator provides electrical insulation between the hard-disk drive and the bot-

tom of its carrier. To remove the hard-disk drive and hard-disk drive insulator,

follow these steps:

1. Remove the hard-disk drive assembly.

See “Hard-Disk Drive Assembly” in Chapter 4.

2. Place the hard-disk drive assembly right side up on the work surface,

and remove the four screws that secure the drive in its carrier.

3. Rotate the front of the drive toward the back of the carrier far enough

to expose the connector on the back of the drive.

4. Carefully pry the flex cable connector away from the hard-disk drive

interface connector on the back of the drive.

5. Lift the hard-disk drive out of its carrier.

6. Remove the hard-disk drive insulator, if necessary.

With the hard-disk drive removed, lift the insulator straight up out of the

carrier. The 17-mm hard-disk drives also have a foam spacer on top of the

insulator (not shown).

To avoid possible damage to components on the hard-disk drive’s integrated

controller board, hold the drive at approximately a 45-degree angle while reat-

taching the interface cable. Then rotate the drive toward the front of its carrier

until it is seated in its original position.

CAUTION: Rotating the hard-disk drive too far can damage the

short flex cable that connects the hard-disk drive to the system

board’s hard-disk drive interface connector. Do not rotate the drive

farther than necessary to disconnect the cable from the back of the

drive.

A-16 Dell Latitude XPi CD Service Manual

C

D-ROM Drive

The CD-ROM drive is attached to the CD-ROM/diskette drive bracket. See

“Diskette/CD-ROM Drive Assembly” in Chapter 4 for instructions about

removing the diskette/CD-ROM assembly from the bottom case assembly. The

CD-ROM flex cable is threaded through a slot in the drive bracket. Remove the

four screws that hold the CD-ROM to the drive bracket. Slide the CD-ROM

flex cable out of the slot in the bracket holding the CD-ROM. The CD-ROM is

replaced as a unit and is not disassembled.

D

iskette Drive

The diskette drive is attached to the CD-ROM/diskette drive bracket. See

“Diskette/CD-ROM Drive Assembly” in Chapter 4 for instructions about

removing the diskette/CD-ROM assembly from the bottom case assembly.

Remove three screws to separate the diskette drive from the drive bracket. The

diskette drive is replaced as a unit and is not disassembled.

P

almrest Assembly Components

To remove and replace a component of the palmrest assembly, you must first

remove the assembly as described in “Palmrest Assembly” in Chapter 4. The

subsections that follow provide removal procedures for the components of the

trackball assembly. See Figure A-2.

Trackball

Turn the trackball board over. Rotate the retaining ring counter-clockwise. Lift

the trackball out of the recess in the trackball holder.

Trackball Interface Cable

Gently disconnect the end of the cable from connector J1 on the trackball button

board.

Trackball Button Board

Remove retaining screw A6 (see Figure A-2), and lift the board out of the palm-

rest assembly. When replacing the board, fit the two small switches on the

underside of the board into the recesses in the palmrest.

Palmrest Brace

Remove screws A-7 through A-9 (see Figure A-2). Gently pull the brace toward

the front, and lift the brace away from the palmrest.

Factory Repair Parts A-17

D

isplay Assembly Components

The display assembly consists of the LCD assembly and its related components.

It also contains the LED board, which provides visual indications of many of

the computer’s basic functions. The microphone assembly is mounted inside the

right hinge cover of the display.

Some parts of the display assembly can be removed and replaced without

removing the assembly from the computer. Others require that the display

assembly be removed. The following subsections describe the removal of dis-

play assembly parts.

Display-Assembly EMI Shield

Figure A-4. Display-Assembly EMI Shield Removal

To remove the display-assembly EMI shield, follow these steps:

1. Remove the display assembly from the computer.

See “Display Assembly” in Chapter 4.

2. Remove the display assembly bezel.

See “Display Assembly Bezel” in Chapter 4.

3. Remove the LCD assembly.

See “LCD Assembly” in Chapter 4.

4. Remove the display-assembly interface cable.

See “Display-Assembly Interface Cable” in Chapter 4.

display assembly case

EMI shield

A-18 Dell Latitude XPi CD Service Manual

5. Remove the LCD-inverter-board.

See “LCD-Inverter-Board Interface Cable” in Chapter 4.

6. Remove the display assembly base.

See “Display Assembly Base” later in this chapter.

7. Remove the display-assembly EMI shield.

The EMI shield is held in place by tabs along the upper and lower edges. Pull-

ing the center of the shield slightly away from the display assembly will release

the tabs.

To replace an EMI shield, carefully orient the replacement EMI shield in the

same position as the original shield. Make sure that all screw holes in the shield

are aligned with their corresponding screw holes in the display assembly case.

Display Assembly Base

To remove the display assembly base (see Figure 4-14), follow these steps:

1. Remove the display assembly from the computer.

See “Display Assembly” in Chapter 4.

2. Remove both hinge covers.

See “Hinge Covers” in Chapter 4.

3. Rotate the display assembly hinges so that they point away from the

display assembly at approximately 180 degrees.

4. Remove the display assembly bezel.

See “Display Assembly Bezel” in Chapter 4.

5. Remove the left hinge.

See the next subsection, “Display Assembly Hinges.”

6. Rotate the right end of the display assembly base away from the display

assembly until the base clears the right hinge.

7. Lift the display assembly base away from the left hinge.

8. Disengage the display-assembly interface cable from the slot in the

base.

Factory Repair Parts A-19

Display Assembly Hinges

To remove a hinge (see Figure 4-14), follow these steps:

1. Remove the display assembly from the computer.

See “Display Assembly” in Chapter 4.

2. Remove the display assembly bezel.

See “Display Assembly Bezel” in Chapter 4.

3. Remove the LCD assembly.

See “LCD Panel” in Chapter 4.

4. Remove the display-assembly interface cable.

See “Display-Assembly Interface Cable” in Chapter 4.

5. Remove the hinge covers.

See “Hinge Covers” in Chapter 4.

6. Remove the display assembly base.

See the previous subsection, “Display Assembly Base.”

7. Rotate the display assembly hinges so that they point away from the

display assembly case at approximately 180 degrees.

8. To remove the hinge, remove the screw securing the hinge to the display

assembly case and disengage the hinge from the display assembly case.

A-20 Dell Latitude XPi CD Service Manual

S

ystem-Board Assembly Components

Figure A-5. System Board Assembly in the Bottom Case Assembly

To remove a part of the system board assembly, Dell recommends that you first

remove the assembly as described in “System Board Assembly” in Chapter 4.

Then follow the instructions described in the following subsections to remove

parts of the system board assembly.

System Board

To remove and replace the system board, transfer the following items from the

system board assembly to the replacement system board assembly:

•Any installed memory modules — See “Memory Modules” in Chapter 4.

•Keyboard/keypad/mouse connector shield — See the next subsection,

“Keyboard/Keypad/Mouse Connector Shield.”

•I/O interface cable — See “I/O Interface Cable” found later in this

appendix.

•I/O board — See “I/O Board” found later in this section.

bottom case assembly

system board assembly

I/O interface

cable

I/O docking EMI clip I/O serial

EMI clip

Factory Repair Parts A-21

Keyboard/Keypad/Mouse Connector Shield

Figure A-6. Keyboard/Keypad/Mouse Connector Shield Removal

Two tabs on the keyboard/keypad/mouse connector shield engage two associ-

ated slots on the I/O panel near the keyboard/keypad/mouse connector.

Retaining screw D4 attaches the bottom of the shield to the bottom of the I/O

panel. To remove the shield, remove retaining screw D4, rotate the bottom of

the shield toward the back of the system board assembly, and lift the shield off

the I/O panel.

D4 (3 mm)

keyboard/keypad/

mouse connector

connector shield

3 mm

A-22 Dell Latitude XPi CD Service Manual

I/O Interface Cable

Figure A-7. I/O Interface Cable Removal

To remove the cable, follow these steps:

1. Disconnect one end of the I/O interface cable from connector JSTDIO

on the system board.

Connector JSTDIO is located on the underside of the system board.

2. Disconnect the other end of the I/O interface cable from connector

JFLEX on the I/O board.

I/O interface cable

connector JFLEX

connector JSTDIO

I/O board

system board

Factory Repair Parts A-23

I/O Board

Figure A-8. I/O Board Removal

To remove and replace the I/O board, follow these steps:

1. Remove the I/O interface cable from connector JSTDIO.

See the previous subsection in this appendix.

2. Remove the keyboard/keypad/mouse connector shield.

See “Keyboard/Keypad/Mouse Connector Shield” found earlier in this

appendix.

3. Remove the four hexagonal standoff screws ST1 through ST4 that

secure the serial and parallel port connectors to the I/O panel.

Use a 3/16 nut holder to remove the standoff screws.

4. Remove the side I/O bracket clip.

See “System Board Assembly” in Chapter 4.

5. Lift the I/O board away from the I/O panel.

When replacing the I/O board, make sure that the side I/O bracket clip is

positioned so that it rests directly on the I/O board, rather than between the

I/O board and I/O bracket (see Figure A-8).

I/O board

I/O bracket

8 mm

I/O bracket clip

ST1 (8 mm)

ST2 (8 mm)

ST3 (8 mm)

ST4 (8 mm)

A-24 Dell Latitude XPi CD Service Manual

I/O Panel

Figure A-9. I/O Panel Removal

To remove and replace the I/O panel, follow these steps:

1. Remove the I/O board.

See the previous subsection in this appendix.

2. Remove the standoff nuts ST1 through ST8

Use a 3/16 nut driver to remove standoff nuts ST1 through ST6 and a 7/32 nut

driver for ST7 and ST8.

3. Remove screw D5.

4. Remove the I/O bracket from the system board.

system board

I/O bracket

8 mm

ST5

ST6

ST7 (4 mm)

4 mm

3 mm

D5 (3 mm)

ST4 ST3 ST2 ST1

ST8 (4 mm)

NOTE: ST1–ST8 are

8-mm standoff nuts

Factory Repair Parts A-25

B

ottom-Case Assembly Components

Figure A-10. Bottom-Case Assembly Components

To remove parts of the bottom case assembly, you must first remove the system

board assembly as described in “System Board Assembly” in Chapter 4. The

subsections that follow describe the removal and replacement of bottom-case

assembly components.

Main Battery Insulator

The main battery insulator insulates the main battery from the system board

assembly. To remove the main battery insulator, lift it off the main battery

compartment.

NOTE: The main battery insulator sometimes comes out as part of the system

board assembly. If this happens, follow the instructions in “System Board

Assembly” in Chapter 4.

bottom case assembly

spreader plate

power button

main battery

insulator

A-26 Dell Latitude XPi CD Service Manual

Power Button and Power-Button Mounting Bracket

Figure A-11. Power Button and Power-Button Mounting Bracket

Removal

Two tabs attach the power button to the power-button mounting bracket. To

remove the power button and its mounting bracket, slide the power button as far

as it will go toward the back of the bottom case assembly. Use a small flat-blade

screwdriver or similar device to press the two tabs out of the mounting bracket.

Lift the mounting bracket out of the bottom case assembly; then press the power

button out of the hole in the side of the bottom case assembly.

power button

mounting bracket

power button

Factory Repair Parts A-27

Spreader and Keel Plates

Figure A-12. Spreader and Keel Plate Removal

Remove the spreader plate by lifting it from the bottom case assembly. The

spreader plate fits easily over plastic projections and screw holes. The keel plate

is in the center of the bottom case, below the spreader plate. The keel plate fits

over a small peg and a semicircular plastic projection. Remove the keel plate by

lifting it out of the bottom case assembly.

spreader plate

bottom case assembly

keel plate

A-28 Dell Latitude XPi CD Service Manual

System Setup Options B-1

Appendix B

System Setup Options

Y

ou may want to customize the configuration of your computer. This appen-

dix describes how to change the system setup options stored in NVRAM on the

system board.

You can access these options in two ways:

•Using the Dell Control Center

•Using the MS-DOS–based version of the system setup options, called the

System Setup program

A

ccessing the Dell Control Center

Figure B-1. Dell Control Center Icon

To access system setup options, double-click the Dell Control Center icon in the

Dell Accessories program group in Windows.

Each button in the Dell Control Center window corresponds to a particular

group of system setup options. The Dell Control Center has a detailed help file

that explains each setup option.

Figure B-2. Dell Control Center Window

B-2 Dell Latitude XPi CD Service Manual

A

ccessing the System Setup Program

NOTE: If the System Setup program is running when the computer enters sus-

pend mode, the computer exits the System Setup program and then activates

suspend mode.

To enter the System Setup program, hold down the <CTRL> and <ALT> keys and

press the <ENTER> key, or press the <FN> and <F1> keys.

System Setup Options B-3

System Setup Screens

Figure B-3. System Setup Screens

Time: 13:17:02Date: Mon Feb 12, 1997 This category sets the time in

24-hour format (hours:min-

utes:seconds) for the internal

clock/calendar.

To change the value in a field,

enter digits or use the left- or

right-arrow key to decrease or

increase the value.

Changes take effect immediately.

Esc exit

change values Alt-B reboot

Dell Computer Corporation

Page 1 of 2 Dell Latitude XPi CD System Setup

Tab,Shift-Tab change fields change values Esc exit

BIOS Version: A

XX

XXX

Dell Computer Corporation

Page 2 of 2 Dell Latitude XPi CD System Setup

Alt-P nextTab,Shift-Tab change fields

BIOS Version: A

XX

Alt-P next Alt-B reboot

Internal Hard Drive:

Diskette Drive A:

Boot Speed:

Boot Sequence:

Speaker Volume:

Keyboard Click:

Serial Port:

Infrared Data Port:

Parallel Mode:

Integrated Trackball:

Upper PC Card Socket:

Lower PC Card Socket:

Monitor Toggle:

Replicator SCSI:

Replicator Network:

Ring Speed:

1216 MB

3.5 inch, 1.44 MB

150 MHz

Diskette First

High

Disabled

COM1

Disabled

Bidirectional

Enabled

Not Installed

Not installed

Enabled

Enabled

Enabled

16 mbps

Power Management:

Display Time-Out:

Disk Time-Out:

Suspend Time-Out:

S2D Time-Out:

Smart CPU Mode:

Brightness:

Ring/Event Resume:

Alarm Resume:

Display Close:

System Switch:

Battery Status:

IntelliSpin:

Primary Password:

Admin Password:

AC

Disabled

Disabled

Disabled

Disabled

Disabled

Disabled

High

BATTERY

Enabled

4 minutes

1 minute

10 minutes

8 hours

Enabled

Low

When set to DISABLED, this cate-

gory disables all power

management features.

The default setting is ENABLED.

A change in this category takes

Microprocessor:

System Memory:

Video Memory:

External Cache:

Expansion Device:

Service Tag:

Asset Tag:

Pentium-150

16 MB

1.1 MB

256 KB

Not installed

XXXXX

XXXXX

Pentium-150

16 MB

1.1 MB

256 KB

Not installed

XXXXX

XXXXX

Microprocessor:

System Memory:

Video Memory:

External Cache:

Expansion Device:

Service Tag:

Asset Tag:

Enabled

Enabled

SUSPEND

ON/OFF

Display

High Performance

Disabled

Disabled

B-4 Dell Latitude XPi CD Service Manual

Table B-1. System Setup Program Categories

Category Function

BIOS VERSION Displays the version number and release date

of the BIOS in the computer.

TIME Resets time on computer’s internal clock.

DATE Resets date on computer’s internal calendar.

INTERNAL HARD DRIVE Displays capacity of computer’s hard-disk

drive.

DISKETTE DRIVE A Identifies type of diskette drive installed.

BOOT SPEED Indicates operating frequency at which com-

puter boots—processor’s rated speed or a

slower speed for power conservation or speed-

sensitive software.

BOOT SEQUENCE Determines whether computer boots from dis-

kette (if present) or hard-disk drive.

SPEAKER VOLUME Adjusts volume of computer’s speaker or dis-

ables speaker. (System beep codes are not

affected by this category’s setting.)

KEYBOARD CLICK Determines whether built-in keyboard makes

audible clicking sounds. (SPEAKER VOLUME

must also be enabled.)

SERIAL PORT Configures computer’s built-in serial port.

INFRARED DATA PORT Configures computer’s built-in IrDA 1.0-

compatible communications port.

PARALLEL MODE Controls whether computer’s built-in parallel

port is configured as an Enhanced Capability

Port, Enhanced Parallel Port, AT-compatible

(unidirectional) port, or PS/2-compatible

(bidirectional) port.

INTEGRATED TRACKBALL Enables computer’s integrated trackball. Set to

DISABLED to connect a serial mouse.

UPPER PC CARD

SOCKET

or

LOWER PC CARD

SOCKET

Displays status of PC Card connectors. To

conserve power, category may be set to

DISABLED if a PC Card is installed but not

being used.

MONITOR TOGGLE Enables <CTRL><ALT><F8> key combina-

tion that directs where computer’s video image

is sent (the built-in display, an external VGA

display, or both).

System Setup Options B-5

REPLICATOR SCSI Configures computer for use with Advanced

Port Replicator. SCSI drivers will load auto-

matically if a SCSI device is connected.

REPLICATOR NETWORK Enabling this category and installing

is_net.exe utility allow user to configure net-

work drivers for use with Advanced Port

Replicator.

RING SPEED Configures the ring speed for the Advanced

Port Replicator.

MICROPROCESSOR Displays type of microprocessor installed.

SYSTEM MEMORY Displays amount of system memory.

VIDEO MEMORY Displays amount of video memory.

EXTERNAL CACHE Displays amount of external cache memory.

EXPANSION DEVICE Shows the type of Dell Latitude Advanced

Port Replicator that is attached to the com-

puter. There are no user-selectable settings for

this option.

SERVICE TAG Displays computer’s five-character service

tag number.

ASSET TAG Displays computer’s customer-programmable

asset tag. This category only appears if user

has entered an asset tag number.

POWER MANAGEMENT Enables computer’s power conservation fea-

tures.

BATTERY One of the categories of POWER MANAGE-

MENT. Set different time-outs for the following

options when the computer operates from bat-

tery power: DISPLAY TIME-OUT, DISK TIME-

OUT, SUSPEND TIME-OUT, S2D TIME-OUT,

SMART CPU MODE, and BRIGHTNESS.

Changing the BATTERY option takes effect

immediately (rebooting is not required)

AC One of the categories of POWER MANAGE-

MENT. Set different time-outs for the following

options when operating the computer from

alternating current (AC) power: DISPLAY

TIME-OUT, DISK TIME-OUT, SUSPEND TIME-

OUT, S2D TIME-OUT, SMART CPU MODE, and

BRIGHTNESS.

Table B-1. System Setup Program Categories

(Continued)

Category Function

B-6 Dell Latitude XPi CD Service Manual

DISPLAY TIME-OUT Determines how long computer operates with-

out detecting I/O activity before display is

switched off to conserve battery power. This

option should be disabled if software compati-

bility problems occur.

DISK TIME-OUT Determines how long hard-disk drive is idle

before drive motor turns off to conserve bat-

tery power.

SUSPEND TIME-OUT Determines how long computer is idle before

suspend mode is activated.

S2D TIME-OUT Determines how long computer is idle before

suspend-to-disk mode is activated.

SMART CPU MODE Allows microprocessor to slow down when

inactive. If software runs particular slowly,

this category should be set to DISABLE.

BRIGHTNESS Determines the brightness used when running

from the battery.

RING/EVENT RESUME Determines if computer exits suspend mode if

an installed modem receives an incoming call.

ALARM RESUME Determines if computer resumes normal oper-

ation from suspend or standby mode if an

alarm from RTC is detected.

DISPLAY CLOSE Indicates whether the computer enters suspend

mode when the display is closed or whether

only the display is turned off when the display

is closed. SUSPEND (the default) indicates the

computer is in suspend mode when the display

is closed. ACTIVE turns off the display, but

does not put the computer into suspend mode.

SYSTEM SWITCH Determines if power switch serves as a con-

ventional on/off switch, or toggles computer

between suspend-to-disk operation and normal

operation.

BATTERY STATUS Displays percentage of charge remaining in

battery.

Table B-1. System Setup Program Categories

(Continued)

Category Function

System Setup Options B-7

INTELLISPIN Compensates for unbalanced CDs that cause the

computer to vibrate when the CD-ROM drive is

in use. Allows use of discs that might otherwise

be unreadable. Available for CD-ROM drives

with speeds of 6X or higher. HIGH PERFOR-

MANCE (the default), lets the CD-ROM drive

run at the highest speed. VARIABLE automati-

cally lowers the CD-ROM’s speed to reduce or

stop the vibration.

PRIMARY PASSWORD Displays the current status of the primary pass-

word and allows you to assign or change this

password.

ADMIN PASSWORD Displays current status of computer’s adminis-

trator password security feature. Also used to

assign and verify a new administrator pass-

word.

Table B-1. System Setup Program Categories

(Continued)

Category Function

B-8 Dell Latitude XPi CD Service Manual

Index 1

Index

Numerics

3.1-V power supply board, 4-41

A

Advanced Port Replicator connector dust

cover

removal, 4-43

audio board

removal, 4-44

audio ports

location, 1-3

B

beep codes

POST, 3-1

boot routine

observing when troubleshooting, 2-4

bottom case assembly

components, A-25

removal, 4-29

C

cables

display assembly interface, removal, 4-26

I/O interface, removal, A-22

CD-ROM drive

about, 1-1

removal, 4-31, A-16

computer

features, 1-1

illustrated, 1-2

power, controlling, 1-5

connectors

ZIF, 4-5

D

deck buoy, 4-33

Dell Control Center

entering, B-1

Dell diagnostics, 3-9

diskette drive, A-16

diskette drive assembly

removal, 4-31, A-16

display assembly

base, removal, A-18

bezel, removal, 4-20

EMI shield, removal, A-17

hinges, removal, A-19

interface cable, removal, 4-26

latch spring, removal, 4-21

latch, removal, 4-21

removal, 4-18

2 Dell Latitude XPi CD Service Manual

E

error messages, system, 3-3

ESD, 4-2

exploded view

bottom assembly, A-14

LCD assembly, A-12

top assembly, A-13

external visual inspection, 2-1

G

grounding strap, 4-3

H

hard-disk drive, A-15

hard-disk drive assembly

removal, 4-7

hinge covers

removal, 4-25

I

I/O board, A-23

I/O interface cable

removal, 4-41, A-22

I/O panel, A-24

I/O panel dust cover

removal, 4-42

indicator panel, 1-3

initial procedures

system error messages, 3-3

troubleshooting, 2-1

initialization

error messages, 3-9

IrDA communications port

location, 1-2

IRQ line assignments

list of, 1-6

K

keel plate, A-27

key combinations

to enter System Setup program, B-2

keyboard assembly

removal, 4-14

keyboard/keypad/mouse connector shield

removal, A-21

L

LCD inverter board, 4-24

LCD panel

removal, 4-22

LEDs, 1-3

low-battery warnings, 1-4

M

main battery

removal, 4-3

memory compartment cover

removal, 4-8

memory module

capacities, 1-1

removal, 4-9

messages, system error

list of, 3-3

messages See system error messages

microphone/switch assembly

removal, 4-28

Index 3

P

palmrest assembly

components, A-16

removal, 4-10

palmrest brace, A-16

PC Card

types supported, 1-1

POST beep codes

about, 3-1

list of, 3-1

power button

removal, A-26

power-button mounting bracket, A-26

precautions, 4-2

R

reserve battery

removal, 4-36

S

screw identification and tightening, 4-4

sockets

memory module, 4-9

specifications

technical, 1-7

spreader plate, A-27

subsystems

testing, 3-8

superpart assembly

components, 4-36

removal, 4-34

system

configuring, B-4

features, 1-1

locations, 1-2

system board assembly

removal, 4-34, 4-38

system board components, A-20

system configuration information, B-3

system error messages

about, 3-3

list of, 3-3

system setup options, B-1

System Setup program

entering, B-2

screens, B-3

settings, B-4

T

technical specifications, 1-7

tilt-support feet

removal, 4-16

tools required, 4-2, A-1

trackball

assembly removal, 4-13, A-16

button board removal, A-16

interface cable, A-16

troubleshooting

boot routine interpretation, 2-4

external visual inspection, 2-1

initial user contact, 2-1

U

user contact

initial, 2-1

4 Dell Latitude XPi CD Service Manual

V

visual inspection

external, 2-1

Z

ZIF connectors, 4-5