Dell Inspiron Xpi Cd Service Guide

							Dell® Latitude® XPi CD
SERVICE MANUAL
® 
						

							Information in this manual is subject to change without notice.
Ó 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 
						

							Read This First
Warnings, 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.
System 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
Physical Description 
Figure 1-1.  Front View of the Notebook Computer  
 trackball 
assembly
diskette drivemain battery assembly LCD paneldisplay assembly 
latch
indicator panel
tilt-support foot (2) keyboard  display assembly
speakermicrophone
infrared port
CD-ROM drive
bottom case assembly