Dell LM P-133ST

Information in this manual is subject to change without notice.

Printed in the United States of America. Reproduction in any manner whatsoever without the written permission of Dell Co mputer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, and Latitude are registered trademarks of Dell Computer Corpora t ion ; MS-DOS is a registered trademark of

Microsoft Corporation; Intel and Pentium are registered trademarks of Intel Corporation; IBM is a registere d trademark of International Business Machines Corporation.

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

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

June 1996 P/N 98085

Contents

Main Page Contents Chapter 1 System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Chapter 2 Initial Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Chapter 3 Beep Codes and Error Messages . . . . . . . . . . . . . . . . . . 3-1 Chapter 4 Removing and Replacing Parts . . . . . . . . . . . . . . . . . . . 4-1 Index Figures Tables Page ead This First W arnings, Cautions, and Notes Page Page Chapter 1 System Overview y stem Features 1-2 Dell Latitude LM Systems Service Manual hysical Description Figure 1-1. Front View of the Portable Computer Figure 1-2. Back View of the Portable Computer Status Display Figure 1-3. Status Display Panel Keyboard Indicators CD-ROM/Hard-Disk Drive Indicator Page Battery Charge Gauge assword ystem Power Power Conservation I nterrupt Assi nments Table 1-1. Interrupt Assignments echnical Specifications Page Page Page Page Page Page Chapter 2 Initial Procedures I nitial User Contact V isual Inspection Page O bservin the Boot Routine Page E G Page Page Table 3-1. POST Beep Codes ystem Error Messa es Page Page unnin the Dell Dia nostics Chapter 4 Removin g and Replacin g Parts Page recautionary Measures Figure 4-3. Main Battery Removal Figure 4-4. Hard-Disk Drive Removal Figure 4-5. Options Bay Lock and Latch Page Z IF Connectors Figure 4-8. Releasing a ZIF Connector Removing and Replacing Parts 4-7 E xploded Views of Components and Assemblies Figure 4-9. Exploded ViewComputer 4-8 Dell Latitude LM Systems Service Manual Figure 4-10. Exploded ViewLCD Assembly Removing and Replacing Parts 4-9 . Figure 4-11. Exploded ViewTop Assembly 4-10 Dell Latitude LM Systems Service Manual Figure 4-12. Exploded ViewBottom Assembly F actory Repair Parts and Assemblies Page Page Page Page Page Table 4-2. Naming Conventions D H ard-Disk Drive Figure 4-14. Hard-Disk Drive Disassembly Page Page M emory Module Figure 4-17. Memory Module Removal L CD Assembly Figure 4-18. LCD Assembly Removal Front Bezel Figure 4-19. Front Bezel Removal LCD Panel Figure 4-20. LCD Panel Removal Inverter Board Figure 4-21. Inverter Board Removal Microphone LCD Assembly Latches Figure 4-22. LCD Assembly Latches Removal Power/Suspend Indicator Figure 4-23. Power/Suspend Indicator Removal Back Bezel Figure 4-24. Back Bezel Removal K eyboard Figure 4-25. Keyboard Removal Page 4-32 Dell Latitude LM Systems Service Manual op Assembly Production Note!!! Figure 4-26. Top Assembly Removal Page Speakers Figure 4-27. Speakers Removal Status Display Board Figure 4-28. Status Display Board Removal I/R Device Figure 4-29. I/R Device Removal Power Button Figure 4-30. Power Button Removal Touch Pad Figure 4-31. Touch Pad Removal B ottom Assembly Figure 4-32. Bottom Assembly Processor Board Figure 4-33. Processor Board Removal Power Supply Board Figure 4-34. Power Supply Board Removal Audio Board Figure 4-35. Audio Board Removal Main Board Figure 4-36. Main Board Removal Page Cache Board Figure 4-37. Cache Board Removal Page Index A B C D E F G H I M N O P R T U V Z