Dell Latitude CS R User manual

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____________________
Information in this document is subject to change without notice.
© 1999 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.
November 1999 P/N 0708R Rev. A01

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Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Preparing to Work Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Screw Identification and Tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
ZIF Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Removing Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . .6
Hard-Disk Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Memory Module Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Bottom Memory Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Top Memory Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Display-Assembly Bezel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Display-Assembly Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Replacing a Sharp LCD panel with a Sharp LCD panel or Replacing a
Samsung LCD panel with a Samsung LCD panel. . . . . . . . . . . . . . . . . .15
Replacing a Sharp LCD Panel with a Samsung LCD Panel or Replacing a
Samsung LCD Panel with a Sharp LCD Panel. . . . . . . . . . . . . . . . . . . . .16
Removing the Packing Bezel on a New Sharp LCD Panel. . . . . . . . .17
Packing a Defective Sharp LCD Panel for Return Shipping. . . . . . . .17
Keyboard Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Palmrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Bottom Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Reserve Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Main Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Main Battery Release Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Thermal Cooling Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Touch Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
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)LJXUHV Figure 1. Computer Orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Figure 2. Main Battery Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . .3

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Figure 3. Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 4. Disconnecting an Interface Cable. . . . . . . . . . . . . . . . . . . . . . . .5
Figure 5. Exploded ViewComputer . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Figure 6. Hard-Disk Drive Assembly Removal. . . . . . . . . . . . . . . . . . . . . .7
Figure 7. Bottom Memory Module Removal. . . . . . . . . . . . . . . . . . . . . . .8
Figure 8. Top Memory Module Removal . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 9. Status Indicator Panel Removal . . . . . . . . . . . . . . . . . . . . . . . .10
Figure 10. Display Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 11. Sharp Display-Assembly Bezel Removal . . . . . . . . . . . . . . . .13
Figure 12. Samsung Display-Assembly Bezel Removal. . . . . . . . . . . . . .14
Figure 13. Removing the Keyboard-Assembly Screws. . . . . . . . . . . . . .18
Figure 14. Removing the Palmrest-Assembly Screws . . . . . . . . . . . . . .19
Figure 15. Palmrest Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . .21
Figure 16. Bottom Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Figure 17. Main Battery Release Latch. . . . . . . . . . . . . . . . . . . . . . . . . .23
Figure 18. Thermal Cooling Solution Removal. . . . . . . . . . . . . . . . . . . . .24
Figure 19. System Board Assembly Removal. . . . . . . . . . . . . . . . . . . . .26
Figure 20. Microprocessor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
7DEOHV Table 1. Screw Placement Mat with Component Screw Counts and Sizes. . 4

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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 trou-
bleshooting procedures and instructions on using the Dell Diagnostics to test
the computer system.
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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 system.
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Dell Latitude CS Portable Computers Service Manual 1
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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
the following conditions:
The computer and any attached peripherals are turned off, and the
peripherals are disconnected from theI/O panel on the back and right side
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 it. The angle of the display assembly with
respect to the bottom case should never 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.
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right side
left side
back of computer
front of computer

2 Dell Latitude CS Portable Computers Service Manual
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Most of the procedures in thismanual require the use of one or more of the
following tools:
#0 and #1 magnetized Phillips-head screwdrivers
Small flat-blade screwdriver
5-mm socket wrench
7-mm socket wrench
Small plastic scribe
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Before you start to work on the computer, perform the following steps:
1. Save any work in progress and close all open application programs.
2. Turn off the computer and any attached peripherals.
NOTE: Make sure that the computer is turned off and not in suspend-to-
disk mode (S2D). If you cannot shut down the computer using its operating
system, press the power button for 4 seconds.
3. If the computer is docked in aC/Dock Expansion Station or C/Port
Advanced Port Replicator (APR), undock the computer.
4. Disconnect the computer and any attached peripherals from their electrical
outlets to reduce the potential for personal injury or shock. Also disconnect
any telephone or telecommunications lines from the computer.
5. Remove the power cable.
6. Disconnect all other external cables from the computer.
7. Remove any installed PC Cards.
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8. Turn the computer over so the battery is on the lower right corner of the
computer, and remove the main battery assembly from the battery bay.
Slide the battery bay latch toward the right side of the computer to push
the back side of the battery up out of the battery bay (seeFigure 2).