Dell Latitude CPt S User manual

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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

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

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

2 Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual

The procedures in this manual require the following tools:
Number 1 magnetized Phillips-head screwdriver
Small flat-blade screwdriver
Small plastic scribe
Microprocessor extractor

'&

(
"
)&(
*+,&*-+.,
+

&-+.
"(

.((&


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 or
hibernate mode. If you cannot shut down the computer using the com-
puter’s operating system, press and hold 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. Disconnect all other external cables from the computer.
6. Remove any installed PC Cards or plastic blanks from the PC Card slot.
7. Remove any installed devices in the modular device bay.

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual 3
"
*,

8. Remove the main battery 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. Remove the secondary battery assembly (if present) from the modular bay.
10. 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 M2.5x4 M2.0x3M3.0x3

4 Dell Latitude CPt V/CPt S Series and CPx H/CPx J 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
Assembly:
M3.0 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-Inch Display
Assembly
LCD to Top Cover:
M2.0 x 3 (6 each)
12.1-Inch Display
Assembly
LCD to Top Cover:
M3.0 x 5 (4 each)
12.1-Inch Display
Assembly
Inverter:
M3.0 x 3 (3 each)
Palmrest Assembly:
M2.5 x 20 (5 each)
System Board
Assembly:
M2.5 x 4 (2 each)
(w/o modem assembly)
M2.5 x 4 (1 each)
M2.5 x 10 (1 each)
(w/ modem assembly)
Microprocessor
Shield Assembly:
3 captive and
2 removable screws
M2.0 x 3 (2 each)
M2.5 x 4 (1 each)
(may not apply to
your system)
Thermal Cooling
Assembly and
Exhaust Fan:
M2.5 x 4 (2 each)

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J 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 the cable from them (see Figure 4).
'(%!
0'"


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.

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/CPt S Series and CPx H/CPx J 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
AC adapter ADPT, AC, EXT, 20V, 70W, 3W, BA
Power cable, U.S. CORD, PWR, 110V, 6F, AC, 3W/3P, US

Customer kit, main battery CUS, BTRY, 14.4V, 8CELL, LITH
CUS, BTRY, 9.6V, 8CELL, NiMH
(option for CPt S-Series only)
2
Main battery BTRY, 53WHR, 14.4V, 8CELL, LITH
BTRY, MAIN, 9.6V, 8, NIMH
(option for CPt S-Series only)
 
Diskette drive CUS, SUBASSY, FD, F3, INT/EXT 7
! "#$% 
LS-120 drive subassembly CUS, SUBASSY, VAS, LS120, 120MB, F3 7
"& 
CD-ROM drive CUS, CD, 650M, I, 24X, zzz*7
"&'& 
CD-RW ROM drive CUS, CD-RW, 650M, I, zzz*7
("& 
DVD-ROM drive SUBASSY, DVD, MPEGII, TSHBA 7
)"
Hard-disk drive,
subassembly
HD, xxxxGB, yyMM, zzz*6
Hard-disk drive MOD, HD, xxxxGB, I, F2, yyMM, zzz*
CUS, HD xxxxGB, I, yyMM, zzz*
Hard-disk drive
interface board
PWA, INTERCON, HD
* Substitute the drive capacity for xxxxGB,the drive height for yyMM, and zzz for
the manufacturer’s name.

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual 7
)"
Hard-disk drive carrier ASSY, CARR, HD

Palmrest assembly ASSY, PLMRST, TPAD 20
Palmrest screws (5) SCR, M2.5X20, PHH, LP, ZPS 19
&
Reserve battery CUS, BTRY, RESERVE
*
Euro-language specific
keyboard
KYBD, nn, iiii*, D-PTG, EMEA 10
Asian-language specific
keyboard
KYBD, nn, iiii*, D-PTG, APCC
English (U.K.) KYBD, 88, UK, D-PTG, EMEA
English (U.S.) KYBD, 87, US, D-PTG, US
English (International) KYBD, 87, US, INT, D-PTG, EMEA
Keyboard screws (7) SCR, M2.5X10, PHH, LP, ZPS 9
* Substitute the number of keys for “nn”and the specific language for “iiii.”
!+#,-#"./0
14.1-inch LCD display LCD, TFT, 14.1, zzz*14
!+#$-#"./0
12.1-inch LCD display LCD, TFT, 12.1, zzz*16
#$-#"./0.
12.1-inch LCD display
panel inverter
INVRTR, LCD, 12.1, zzz*16,18
1
14.1-inch display top cover ASSY, CVR, TOP, LCD, TFT, 14.1 14
14.1-inch display bezel ASSY, BZL, LCD, TFT, 14.1 14
12.1-inch display top cover ASSY, CVR, TOP, LCD, 12.1 16
12.1-inch display bezel ASSY, BZL, LCD, 12.1 16
Display assembly screws SCR, M2.5x4, PHH, LP, ZPS
14.1-inch flex cable ASSY, CBL, FLX, TFT 14
12.1-inch flex cable ASSY, CBL, FLX, W/EXTN,12.1 16, 17
!"%)%%!%
  

8 Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual
14.1 display, right hinge HNG, RT, LCD, 14.1
14.1 display, left hinge HNG, LF, LCD, 14.1
12.1 display, right hinge HNG, RT, LCD, 12.1
12.1 display, left hinge HNG, LF, LCD, 12.1
14.1-inch LCD panel screw SCR, M2X3, PHH, LP, ZPS
12.1-inch LCD panel screw SCR, M3X5, PHH, LP, ZPS
12.1-inch LCD inverter SCR, M3X3, PHH, LP, ZPS 16, 18
LCD hinge screw SCR, M2.5X4, PHH, LP, ZPS
LCD bezel screw SCR, M2.5X4, PHH, LP, ZPS
!!/0
Display latch assembly ASSY, LATCH, SPR, DIS 14, 16

Bottom assembly ASSY, CVR, BTM, BASE, PLSTC, CH-ST 22
 
Internal Modem (installed) MOD, MDM, INT, NBK, CH-ST 21
Modem Cable Kit KIT, CBL, PHONE, 4P,RJ11, MOM
Internal Modem MDM, INT, NBK, CHRL-ST
Modem Screw SCR, M2, 5X15, KSH, MS, BCS, W/
WSHR
Internal Modem
(not installed)
MOD, NO, MDM, INT, NBK, CH-ST
Modem Screw SCR, M2, 5X4, RND, MS, NPL, W/
WSHR
Case Plug PLUG, PLSTC, MDM, CH-ST

Customer kit, memory
module, 32-MB
CUS, 32MB, DIMM, SDRAM 8
Customer kit, memory
module, 64-MB
CUS, 64MB, DIMM, SDRAM
Customer kit, memory
module, 128-MB
CUS, 128MB, DIMM, SDRAM
Customer kit, memory
module, 192-MB
CUS, 192MB, DIMM, SDRAM
Customer kit, memory
module, 256-MB
CUS, 256MB, DIMM, SDRAM
!"%)%%!%
  

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual 9

Memory door assembly DOOR, MEM, MET, NB

System board assembly,
service kit
SVCKIT, MB ASSY, PWA, ENGINE 22
Service tag
installation diskette
DSK, BIOS, FLDSVC, F3, US
BIOS flash diskette KIT, BIOS, FLASH, UPG, F3
Diagnostic diskette KIT, DSK, DIAG, F3, WW
System board
assembly
ASSY, PWA, ENGINE
Main system
board
PWA, PLN, 0M, NB
Exhaust fan and
cable
FAN, 25X25X10
Thermal cooling
assembly
SVC, SUBASSY, HTSNK, CPU, HYB
//
Microprocessor,
Service Kit
SVC, PRM, PCA 12
Microprocessor shield/
thermal cooling assembly
arm screw
SCR, M2X3, PHH, LP, ZPS 12
Thermal cooling assembly SCR, M2.5X4, PHH, LP, ZPS 23
System board assembly SCR, M2.5X4, PHH, LP, ZPS 22
// 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
!"%)%%!%
  

10 Dell Latitude CPt V/CPt S Series and CPx H/CPx J 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
internal modem
(may not apply
to your system)
case plug
for modem

support.dell.com Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Service Manual 11

/01(%2()%%!
"

.((&

&((1
*2!&(
,"
  !"
1. Remove the main battery and secondary battery (if present).
2. Turn the computer over, and remove the 5-mm screw from the center of
the hard-disk drive door (see Figure 6).
The drive is on the left side of the computer.
3. Slide the drive door up and pull the drive assembly out of the computer.
  !"
1. Push the drive assembly into the opening on the left side of the computer.
2. Slide the drive door down until it aligns with the cover.
3. Turn the computer over and replace the 5-mm screw on the drive door.
bottom of computer
hard-disk drive door
5-mm screw
M3.0x5