Dell Latitude CPt S User manual

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

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____________________
Information in this document is subject to change without notice.
© 2000 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 trademarks of Dell Computer 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.
February 2000 P/N 64PTN Rev. A00

v
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Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Preparing to Work Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Before Working Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . 2
Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Disconnecting Interface Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Removing a Cable from a ZIF Interface Connector . . . . . . . . . . . . . . . 5
Replacing a Cable into a ZIF Interface Connector . . . . . . . . . . . . . . . . 5
Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Removing and Replacing Field-Replaceable Parts and Assemblies . . . . . . . 10
Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Removing the Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . 11
Replacing the Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . 11
Modular Bay Devices (Diskette Drive, CD-ROM Drive, DVD-ROM Drive,
CD-RW Drive, SuperDisk LS-120 Drive, Battery, or Travel Module) . . . . 12
Memory Module Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Removing the Memory Module Cover . . . . . . . . . . . . . . . . . . . . . . . 12
Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Removing the Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Replacing the Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Removing the Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replacing the Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Microprocessor Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removing the Microprocessor Module . . . . . . . . . . . . . . . . . . . . . . . 18
Replacing the Microprocessor Module . . . . . . . . . . . . . . . . . . . . . . . 19
Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Removing the Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
14.1-Inch Display Assembly Bezel and LCD Panel . . . . . . . . . . . . . . . . . 21
Removing the 14.1-Inch Display Assembly Bezel . . . . . . . . . . . . . . . 21
Removing the14.1-Inch LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removing the 14.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 22
Replacing the 14.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 23
Replacing the 14.1-Inch LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 24

vi
12.1-Inch Display Assembly Bezel and LCD Panel . . . . . . . . . . . . . . . . . 25
Removing the 12.1-Inch Display Assembly Bezel . . . . . . . . . . . . . . . 25
Removing the 12.1-Inch LCD Panel Inverter . . . . . . . . . . . . . . . . . . 26
Removing the 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 26
Replacing the 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . 26
Replacing the 12.1-Inch LCD Panel Inverter . . . . . . . . . . . . . . . . . . . 27
Replacing the 12.1-Inch LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . 28
Display Assembly Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Palmrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Removing the Palmrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Reserve Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Removing the Reserve Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Modem Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Removing the Modem Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Replacing the Modem Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Removing the System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Replacing the System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Thermal Cooling Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Module Latch Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

 Figure 1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Main Battery Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 3. Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 4. Disconnecting a Cable from an Interface Connector . . . . . . . . 5
Figure 5. Exploded View—Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Hard-Disk Drive Assembly Removal . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Modular Bay Device Removal . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 8. Memory Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9. Removing the Keyboard Assembly Screws . . . . . . . . . . . . . . 14
Figure 10. Keyboard Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 11. Keyboard and Track Stick Cables and Connectors . . . . . . . . . 16
Figure 12. Microprocessor Module Removal . . . . . . . . . . . . . . . . . . . . . . 18
Figure 13. Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 14. 14.1-Inch Display Assembly Bezel . . . . . . . . . . . . . . . . . . . . . 21
Figure 15. Display Assembly Bezel (bottom view) . . . . . . . . . . . . . . . . . . 23
Figure 16. 12.1-Inch Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 17. 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 18. 12.1-Inch LCD Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 19. Removing the Palmrest Assembly Screws. . . . . . . . . . . . . . . 30

vii
Figure 20. Palmrest Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 21. Modem Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 22. System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 23. Thermal Cooling Assembly Removal. . . . . . . . . . . . . . . . . . . . 36
Figure 24. Module Latch Assemblies Removal . . . . . . . . . . . . . . . . . . . . 37
Figure 25. Left Module Latch and Spring . . . . . . . . . . . . . . . . . . . . . . . . . 38
 Table 1. Screw Placement Mat With Component Screw Counts
and Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 2. Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

viii
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A prerequisite for using this manual to service Dell computer systems is a basic
knowledge of PCs and prior training in PC troubleshooting techniques. In addition
to information provided in this manual, Dell provides the User’s Guide for
troubleshooting procedures and instructions on using the Dell Diagnostics to
test the computer system.

Throughout this guide, blocks of text may be accompanied by an icon and printed
in bold type or in italic type. These blocks are notes, notices, and cautions, and
they are used as follows:
NOTE: A NOTE indicates important information that helps you make better use
of your computer.


  !
""#

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual 1



This manual provides instructions for removing and replacing field-replaceable
components, assemblies, and subassemblies in your Dell Latitude portable
computer. Unless otherwise noted, each procedure in this manual assumes
that a part can be replaced by performing the removal procedure in reverse
order.
It is recommended that you use a book or something similar to support the
display assembly when it is open nearly 180 degrees. 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 manual, the
locations or directions relative to the computer are as shown in Figure 1 unless
otherwise specified.

$"
%%$&

right side
left side
back of computer
front of computer