Dell Latitude CPt V User manual











____________________
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.
September 1999 P/N 5169T Rev. A00

v

Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Preparing to Work Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Screw Identification and Tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ZIF Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Removing Field-Replaceable Parts and Assemblies . . . . . . . . . . . . . . . . . . . 12
Hard-Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Modular Bay Devices (Diskette Drive, CD-ROM Drive, DVD-ROM
Drive, SuperDisk LS-120 Drive, Battery, or Travel Module) . . . . . . . 13
Memory Module Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Microprocessor Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Replacing the Microprocessor Module . . . . . . . . . . . . . . . . . . . . . . . 20
Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Display Assembly Bezel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14.1-Inch Display LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing the 14.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . . . . 24
12.1-Inch Display LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Reserve Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Module Latch Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Thermal Cooling Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

vi

 Figure 1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Main Battery Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 3. Screw Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 4. Disconnecting an Interface Cable . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 5. Exploded View—Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. Hard-Disk Drive Assembly Removal . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Modular Bay Device Removal . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. Memory Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 9. Removing the Keyboard Assembly Screws . . . . . . . . . . . . . . 16
Figure 10. Keyboard Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11. Keyboard and Track Stick Cables . . . . . . . . . . . . . . . . . . . . . . 18
Figure 12. Microprocessor Module Removal . . . . . . . . . . . . . . . . . . . . . . 19
Figure 13. Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14. 14.1-Inch Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 15. 12.1-Inch Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 16. 12.1-Inch LCD Flex Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 17. 12.1-Inch LCD Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 18. Removing the Palmrest Assembly Screws. . . . . . . . . . . . . . . 30
Figure 19. Palmrest Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 20. Module Latch Assemblies Removal . . . . . . . . . . . . . . . . . . . . 32
Figure 21. Left Module Latch and Spring. . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 22. System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 23. Thermal Cooling Assembly Removal . . . . . . . . . . . . . . . . . . . 36
 Table 1. Screw Placement Mat With Component Screw Counts
and Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 2. Parts and Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

vii

viii

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-Series/CPx H-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
the following conditions:
The computer and any attached peripherals are turned off, and the
peripherals are disconnected from the I/O panel on the back 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 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

2 Dell Latitude CPt V-Series/CPx H-Series Service Manual

Most of the procedures in this manual require the use of one or more of the
following tools:
Number 1 magnetized Phillips-head screwdriver
Small flat-blade screwdriver
Small plastic scribe
Processor extractor

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 the computer is turned off and not in suspend-to-
disk mode. If you cannot shut down the computer using the computer’s
operating system, press the power button for 4 seconds.
3. If the computer is docked in a C/Dock Family Expansion Station or C/Port
Family 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.
,&&%


support.dell.com Dell Latitude CPt V-Series/CPx H-Series Service Manual 3
"

8. Remove the main battery assembly from the battery bay.
Slide the battery bay latch toward the right side of the computer. Then slide
the battery out of the battery bay (see Figure 2).

9. Ground yourself by touching the unpainted metal surface of the I/O panel
on the back of the computer.
While you work, periodically touch the I/O panel to dissipate any static
electricity that might harm components.

The illustrations in the following removal procedures provide the correct screw
length as part of the screw’s label. A graphic for that length screw is also
included in the illustration. Examples are shown in Figure 3. Match the actual
screw to the graphic in the illustration to check for correct length.
 !"
-"%
"
,&
"
battery bay latch battery
M2.5x20 M2.5x10 M3.0x5 M2.5x4 M2.0x3

4 Dell Latitude CPt V-Series/CPx H-Series Service Manual
When you are removing and replacing components, photocopy the Table 1
placement mat as a tool to lay out and keep track of the component screws.
#$%&
!'
Hard-Disk Drive:
M3 x 5 (1 each)
Keyboard
Assembly:
M2.5 x 10 (7 each)
Display Assembly:
M2.5 x 4 (3 each)
Display Assembly
Bezel:
Rubber Screw
Covers (4 each)
Plastic Screw
Covers (2 each)
Display Assembly
Bezel:
M2.5 x 4 (6 each)
14.1 Display
Assembly LCD to
Top Cover:
M2 x 3 (6 each)
12.1-Inch Display
Assembly LCD to
Top Cover:
M3 x 5 (4 each)
12.1-Inch Display
Assembly Inverter:
M3 x 3 (3 each)
Palmrest Assembly:
M2.5 x 20 (5 each)
System Board:
M2.5 x 4 (2 each)
Microprocessor
Shield:
3 captive and
2 removable screws
M2 x 3 (2 each)
TCA and
Exhaust Fan:
M2.5 x 4 (2 each)

support.dell.com Dell Latitude CPt V-Series/CPx H-Series Service Manual 5

Some of the computer’s interface connectors are zero insertion force (ZIF)
connectors. These connectors are not removable, but they must be released
to disconnect a cable from them (see Figure 4).
() "
.$"

To disconnect an interface cable from a ZIF connector, perform the following
steps:
1. Insert a small flat-blade screwdriver behind the movable part of the
connector.
2. Push gently sideways on the movable part of the connector until it releases
the interface cable.
3. Grasp the interface cable and pull it out of the connector.
To reconnect an interface cable to a ZIF connector, perform the following
steps:
1. Use a small flat-blade screwdriver to open the movable part of the ZIF
connector.
2. Orient the end of the interface cable with the ZIF connector, and insert the
end of the cable into the connector.
3. While holding the cable in place, close the ZIF connector.
To ensure a firm connection, make sure the ZIF connector is completely
closed.
movable part of
connector
(do not remove)

6 Dell Latitude CPt V-Series/CPx H-Series Service Manual
!"#"
Table 2 lists the parts and assemblies available for the computer. Some parts
may only be available as part of a service kit or assembly and are provided for
reference only. The subsections that follow Table 2 provide instructions for
removing and replacing these parts and assemblies.
#$!
  

Customer kit, AC adapter CUS, ADPT, AC, EXT, 20V, 70W,
NBK, CRNA
AC adapter ADPT, AC, EXT, 20V, 70W, 3WIRE,
CRNA
Power cable, U.S. CORD, PWR, 110V, 6F, AC, 3W\3P,
US

Customer kit, main battery CUS, BTRY, 14.4V, 8CELL, LITH,
2ND
2
Main battery BTRY, 53WHR, 14.4V, 8CELL, LITH

Service kit, reserve battery SVC, BTRY, RESERVE,CRNA
Reserve battery BTRY, RESERVE, CRNA

Bottom assembly ASSY, CVR, BTM, BASE, PLSTC,
CRNA
5
 !
Service kit, CD-ROM drive SVC, SUBASSY, CD, 24X, NBK 7
CD-ROM drive bezel BZL, CD
24X CD-ROM drive CD, 650M, I, INT, NBK, 24X, TSHBA
CD-ROM drive interface
board
PWA, INTERCONN, CD/DVD,
OMAHA
Bottom CD-ROM drive
cover
ASSY, BTM/BZL, CD, 24X, TSHBA
CD-ROM housing ASSY, HSG, PLSTC, CD/DVD,
OMHA
CD-ROM drive label LBL, CD, MEDIA BAY, TSHB

support.dell.com Dell Latitude CPt V-Series/CPx H-Series Service Manual 7
"!
Diskette drive service kit SVC, SUBASSY, FD, F3, INT/EXT,
CRNA
7
Diskette drive subassembly SUBASSY, FD, F3, INT/EXT, CRNA
Diskette drive FD, F3, CRNA
Diskette drive assembly
bottom cover
CVR, BTM, PLSTC, FD, F3, CRNA
Diskette drive assembly
top cover
CVR, TOP, PLSTC, FD, F3, CRNA
Diskette drive assembly
interface board
PWA, INTFC, FD, F3, CRNA
Diskette drive assembly
interface cable
CBL, FPC, FD, F3, CRNA
Diskette drive assembly
shield
SHLD, FD, F3, CRNA
!"#! $%&!
LS-120 drive subassembly SUBASSY, VAS, LS120, 120MB, F3 7
' !
DVD-ROM drive
subassembly
SUBASSY, DVD, 4X, MPEGII, TSH-
BA
7
()!
Thermal cooling assembly
(includes fan)
ASSY, HTSK, COOLER, PRC 23
* "
Hard-disk drive,
subassembly SUBASSY, HD, xxxxx, yyyMM, zzz*6
Hard-disk drive HD, xxxxx, I, F2, yyMM, zzz*
Hard-disk drive interface
board
PWA, INTERCONN, HD, CRNA
* Substitute the drive capacity for xxxxx,the drive height for yy,and the
manufacturer for zzz.
#$!
  

8 Dell Latitude CPt V-Series/CPx H-Series Service Manual
* "
Hard-disk drive carrier
assembly
ASSY, CARR, HD, CRNA 6
Hard-disk drive carrier
door
DOOR, HD, 12.7MM, CRNA
Hard-disk drive carrier
bracket
CARRIER, HD, 12.7MM, MET,
CRNA
Hard-disk drive mylar
carrier
MYLAR, CARRIER, HD
Hard-disk drive carrier
screws
SCR, M3X3, KSH, MS, LP, BLO
+
Keyboard, Belgian KYBD, 88, BEL, D-PTG 10
Keyboard, Chinese KYBD, 87, CHI, D-PTG
Keyboard, Danish KYBD, 88, DEN, D-PTG
Keyboard, French KYBD, 88, FR, D-PTG
Keyboard, French/Canadian KYBD, 87, FR CAN, D-PTG
Keyboard, German KYBD, 88, GER, D-PTG
Keyboard, Italian KYBD, 88, ITALIAN, D-PTG
Keyboard, Japanese KYBD, 90, JPN, D-PTG
Keyboard, Korean KYBD, 87, KOR, D-PTG
Keyboard, Latin American KYBD, 88, LAC, D-PTG
Keyboard, Norwegian KYBD, 88, NOR, D-PTG
Keyboard, Portuguese KYBD,88,PORTUGUESE,D-PTG
Keyboard, Russian KYBD, 87, RUS, D-PTG
Keyboard, Spanish KYBD, 88, SPN, D-PTG
Keyboard, Swedish/Finnish KYBD, 88, SWE, D-PTG
Keyboard, Swiss KYBD, 88, SWI, D-PTG
Keyboard, Thai KYBD, 87, THAI, D-PTG
Keyboard, English (U.K.) KYBD, 88, UK, D-PTG
Keyboard, English (U.S.) KYBD, 87, DOM, D-PTG
#$!
  

support.dell.com Dell Latitude CPt V-Series/CPx H-Series Service Manual 9
(
Display top-cover service kit,
14.1-inch display
ASSY, CVR, TOP, LCD, CRNA 13
14.1-inch display top cover CVR, TOP, LCD, TFT, CRNA
12.1-inch display top cover ASSY, CVR, TOP, LCD, 12.1, CRNA 15
14.1-inch flex cable ASSY, CBL, FLX, TFT 14
12.1-inch flex cable ASSY, CBL, FLX, 12.1 15, 16
12.1-inch display bezel ASSY, BZL, LCD, 12.1 15
Right hinge HNG, RT, LCD, TFT
Left hinge HNG, LF, LCD, TFT
#,$-.$ /0)12
14.1-inch LCD/cable service
kit, including LCD, cable,
inverter
SVC, LCD/CBL/INV, TFT, zzz, 14.1”,
CRNA*
14
12.1-Inch Display Panel
12.1-inch LCD panel (Torisan
or Sharp)
LCD, TFT, 12.1 15
Inverter
12.1-inch LCD panel inverter INVRTR, LCD, 12.1 15, 17
##0)
Display latch assembly ASSY, LATCH, SPR, DIS, CRNA 14

Customer kit, memory
module, 32-MB
32MB, DIMM, SDRAM, LAT CRNA,
FAC T
8
Customer kit, memory
module, 64-MB
64MB, DIMM, SDRAM, LAT CRNA,
FAC T
Customer kit, memory
module, 128-MB
128MB, DIMM, SDRAM, LAT
CRNA, FACT
Customer kit, memory
module, 192-MB
192MB, DIMM, SDRAM, LAT
CRNA, FACT
Customer kit, memory
module, 256-MB
256MB, DIMM, SDRAM, LAT
CRNA, FACT
* Substitute the drive capacity for xxxxx,the drive height for yy,and the
manufacturer for zzz.
#$!
  

10 Dell Latitude CPt V-Series/CPx H-Series Service Manual

Service kit, memory door
assembly
SVC, SUBASSY, DOOR, MEM/
BIOS, CRNA
Memory/BIOS door
subassembly
SUBASSY, DOOR, MEM/BIOS, NB,
CRNA

Service kit, palmrest
assembly
ASSY, PLMRST, CRNA 19
Palmrest assembly ASSY, PLMRST, GRY, CRNA
Subassembly,touchpad,
brace
SUBASSY, TPAD, BRACE
Touch pad TPAD, SGL, CHIP, INTEFC
Cable, flex, touch pad CBL, FLX, TPAD
Palmrest, plastic PLMRST, PLSTC
Speaker (2 each) SPKR, 20X40, 1W, 8OHMS
!0
Display assembly SCR, M2.5x4, PHH, LP, ZPS 13
14.1-inch LCD panel SCR, M2X3, PHH, LP, ZPS 14
12.1-inch LCD panel SCR, M3X5, PHH, LP, ZPS 15
12.1-inch LCD inverter SCR, M3X3, PHH, LP, ZPS 15, 17
LCD hinge SCR, M2.5X4, PHH, LP, ZPS 13
LCD bezel SCR, M2.5X4, PHH, LP, ZPS 14
Keyboard SCR, M2.5X10, PHH, LP, ZPS 9
Hard-disk drive carrier SCR, M3X5, PHH, LP, ZPS 6
Microprocessor shield/
thermal cooling assembly
arm
SCR, M2X3, PHH, LP, ZPS 12
Thermal cooling assembly SCR, M2.5X4, PHH, LP, ZPS 23
Palmrest SCR, M2.5X20, PHH, LP, ZPS 19
System board assembly SCR, M2.5X4, PHH, LP, ZPS 22
#$!
  

support.dell.com Dell Latitude CPt V-Series/CPx H-Series Service Manual 11
!
System board assembly,
CRNA, service kit
SVCKIT, MB ASSY, PWA, ENGINE,
CRNA
22
Service tag installation
diskette
DSK, BIOS, FLDSVC, F3, US
BIOS flash diskette KIT, BIOS, FLASH, UPG, F3
Diagnostic diskette KIT, DSK, DIAG, F3, CRNA, WW
System board assembly ASSY, PWA, ENGINE, CRNA 22
Main system board PWA, PLN, 0M, NB, CRNA
Exhaust fan and
cable
FAN, 25X25X10, CRNA
Thermal cooling
assembly
SVC, SUBASSY, HTSNK, CPU, HYB,
CRNA
00
Microprocessor, CRNA,
Service Kit
SVC, PRM, PCA xxx MHz 12
0*
Microprocessor shield ASSY, SHLD, EMI, PRC, MET 12
Service Kit, latch, slider,
Button
LTCH, BTN, Module
Foot, Rubber, Black
(4 each)
Foot, Rbr, Blk
Foot, Rubber, Strike
Zone, Black
Foot, Rbr, Strike Zone, Blk
#$!
  

12 Dell Latitude CPt V-Series/CPx H-Series Service Manual
$!"
 #"
*+,!!-.
The following subsections provide instructions for removing and replacing
field-replaceable parts and assemblies.
display
assembly
keyboard
palmrest
assembly
main battery
modular bay
device
bottom case assembly
system board
hard-disk drive