Dell Inspiron Lm Service Guide

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Information in this manual is subject to change without notice.
Ó 1994–1996 Dell Computer Corporation. All rights reserved.
Printed in the United States of America. 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; MS-DOS is a registered trademark of 
Microsoft Corporation; Intel and Pentium are registered...

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Contents
Chapter 1
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1
System Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Status Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Keyboard Indicators  . . . . . . . . . . . . . . . . . . . . . . ....

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Chapter 3
Beep Codes and Error Messages . . . . . . . . . . . . . . . . . . 3-1
POST Beep Codes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-1
System Error Messages  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-3
Running the Dell Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-6
Chapter 4
Removing and Replacing Parts  . . . . . . . . . . . . . . . . . . . 4-1
Recommended...

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Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43
Cache Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
Index 
Figures
Figure 1-1. Front View of the Portable Computer  . . . . . . . . . . . . . . . . . . . 1-2
Figure 1-2. Back View of the Portable Computer  . . . . . . . . . . . ....

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Figure 4-29. I/R Device Removal  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-36
Figure 4-30. Power Button Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-37
Figure 4-31. Touch Pad Removal  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-38
Figure 4-32. Bottom Assembly  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-39
Figure 4-33. Processor Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-40
Figure...

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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...

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