Dell Latitude CPt C Series 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; IBM is a registered trademark of
International Business Machines Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or th eir products.
Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
May 1999 P/N 5648P Rev. A00

v
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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
Memory Module Cover ...................................... 13
MemoryModules .......................................... 14
Keyboard Assembly ......................................... 15
Display Assembly .......................................... 17
Display Assembly Bezel...................................... 18
Display Assembly Latch...................................... 19
LCD Panel . . . ............................................ 19
Removing the LCD Panel Cable............................. 20
Palmrest Assembly ......................................... 20
Reserve Battery ........................................... 22
BottomAssembly .......................................... 22
Modular Bay Devices (Diskette Drive, CD-ROM Drive,
DVD-ROM Drive, SuperDisk LS-120 Drive, Battery,
or Travel Module ........................................... 23
Module Latch Assemblies . . . ................................. 24
System Board Assembly ..................................... 26
Thermal Cooling Assembly . . ................................. 28
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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. Memory Module Removal .............................. 14

vi
Figure 8. Removing the Keyboard Assembly Screws................. 15
Figure 9. Keyboard Assembly Removal ........................... 16
Figure 10. Display Assembly..................................... 17
Figure 11. Display Assembly Bezel Removal ........................ 18
Figure 12. Removing the Palmrest Assembly Screws ................. 20
Figure 13. Palmrest Assembly Removal ............................ 21
Figure 14. Bottom Assembly .................................... 23
Figure 15. Modular Bay Device Removal ........................... 23
Figure 16. Module Latch Assemblies Removal . . . ................... 24
Figure 17. Left Slider. . ......................................... 25
Figure 18. System Board Assembly Removal........................ 26
Figure 19. Microprocessor Module . . .............................. 27
Figure 20. Thermal Cooling Assembly Removal . . . ................... 28
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Table 1. Screw Placement Mat with Component
Screw Counts and Sizes . ............................... 4
Table 2. Parts and Assemblies . . . ............................... 6

vii

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A prerequisite for using this manual to service Dell computer systems is a basic
knowledge of IBM-compatible PCs and prior training in IBM-compatible 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.
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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, cautions, and warnings,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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DellLatitudeCPtC-Series/CPiR-SeriesServiceManualDellLatitudeCPtC-Series/CPiR-SeriesServiceManual
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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 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.
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right side
left side
back of computer
front of computer

2 Dell Latitude CPt C-Series/CPi R-Series Service Manual
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Most of the procedures in this manual require the use of one or more of the
following tools:

Number 0 and number 1 magnetized Phillips-head screwdrivers

Small flat-blade screwdriver

Small plastic scribe

Processor extractor
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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 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 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 cord.
6. Disconnect all other external cables from the computer.
7. Remove any installed PC Cards.
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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).

Dell Latitude CPt C-Series/CPi R-Series Service Manual 3
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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.
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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.
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battery bay latch battery

4 Dell Latitude CPt C-Series/CPi R-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.
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Hard-Disk Drive:
M3 x 3 (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)
Display Assembly
LCD to Top Cover:
M2 x 3 (6 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 (5 each)

Dell Latitude CPt C-Series/CPi R-Series Service Manual 5
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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).
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To disconnect an interface cable from a ZIF connector, perform the following
steps:
1. Insert a small flat-blade screwdriver under the movable part of the
connector.
2. Pull gently upward 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 C-Series/CPi R-Series Service Manual
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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.
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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
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Customer kit, main battery CUS, BTRY, 14.4V, 8CELL, LITH,
2ND 2
Main battery BTRY,50WHR,14.4V,8CELL, LITH,
CP
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Service kit, reserve battery SVC, BTRY, RESERVE,CRNA
Reserve battery BTRY, RESERVE, CRNA
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Bottom assembly ASSY, CVR, BTM, BASE, PLSTC,
CRNA 14
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Service kit, CD-ROM drive SVC, SUBASSY, CD, 24X, NBK 15
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, CP
Bottom CD-ROM drive
cover ASSY, BTM/BZL, CD, 24X, TSHBA,
CP
CD-ROM housing ASSY, HSG, PLSTC, CD/DVD, OM-
HA, CP
CD-ROM drive label LBL, CD, MEDIA BAY, TSHB, CP

Dell Latitude CPt C-Series/CPi R-Series Service Manual 7
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Diskette drive service kit SVC, SUBASSY, FD, F3, INT/EXT,
CRNA 15
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
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LS-120 drive subassembly SUBASSY, VAS,
LS120,120MB,F3,CP 15
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DVD-ROM drive
subassembly SUBASSY, DVD, 4X, MPEGII, TSH-
BA, CP 15
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Thermal cooling assembly
(includes fan) ASSY, HTSK, COOLER, PRC 20
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Hard-disk drive,
subassembly SUBASSY, HD,
xxxxx , yyy MM, zzz ,
CP
*
6
Hard-disk drive HD,
xxxxx , I, F2, yy MM, 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.
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8 Dell Latitude CPt C-Series/CPi R-Series Service Manual
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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
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Keyboard, Belgian KYBD, 88, BEL, CRNA 9
Keyboard, Chinese KYBD, 87, CHI, CRNA
Keyboard, Danish KYBD, 88, DEN, CRNA
Keyboard, French KYBD, 88, FR, CRNA
Keyboard, French/Canadian KYBD, 87, FR CAN, CRNA
Keyboard, German KYBD, 88, GER, CRNA
Keyboard, Italian KYBD, 88, ITALIAN, CRNA
Keyboard, Japanese KYBD, 90, JPN, CRNA
Keyboard, Korean KYBD, 87, KOR, CRNA
Keyboard, Latin American KYBD, 88, LAC, CRNA
Keyboard, Norwegian KYBD, 88, NOR, CRNA
Keyboard, Portuguese KYBD,88,PORTUGEUSE,CRNA
Keyboard, Russian KYBD, 87, RUS, CRNA
Keyboard, Spanish KYBD, 88, SPN, CRNA
Keyboard, Swedish/Finnish KYBD, 88, SWE, CRNA
Keyboard, Swiss KYBD, 88, SWI, CRNA
Keyboard, Thai KYBD, 87, THAI, CRNA
Keyboard, English (U.K.) KYBD, 88, UK, CRNA
Keyboard, English (U.S.) KYBD, 87, DOM, CRNA
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Dell Latitude CPt C-Series/CPi R-Series Service Manual 9
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Display top-cover service kit,
14.1-inch display ASSY, CVR, TOP, LCD, CRNA
Display top cover CVR, TOP, LCD, TFT, CRNA
Cable ASSY, CBL, FLX, TFT
Right hinge HNG, RT, LCD, TFT
Left hinge HNG, LF, LCD, TFT
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14.1-inch LCD/Cable service
kit, including LCD, cable,
inverter
SVC, LCD/CBL/INV, TFT, zzz , 14.1,
CRNA
*
11
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Display latch assembly ASSY, LATCH, SPR, DIS, CRNA
0HPRU\
Customer kit, memory
module, 32-MB 32MB,DIMM,SDRAM,LATCRNA, FACT
Customer kit, memory
module, 64-MB 64MB,DIMM,SDRAM,LATCRNA, FACT
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
0HPRU\ 'RRU
Service kit, memory door
assembly SVC, SUBASSY, DOOR, MEM/ BIOS, CRNA
Memory/BIOS door
subassembly SUBASSY, DOOR, MEM/BIOS, NB,
CRNA
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Service kit, palmrest
assembly ASSY, PLMRST, CRNA 12
Palmrest assembly ASSY, PLMRST, GRY, CRNA
Subassy, TPad, Brace SUBASSY, TPAD, BRACE
* Substitute the drive capacity for xxxxx
,
the drive height for yy
,
and the
manufacturer for zzz.
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10 Dell Latitude CPt C-Series/CPi R-Series Service Manual
3DOPUHVW $VVHPEO\ FRQWLQXHG
Touch pad TPAD, SGL, CHIP, INTEFC, CP/CPi
Cbl, Flx, TPad CBL, FLX, TPAD
Plmrst, Plstc PLMRST, PLSTC
Speaker (2 each) SPKR, 20X40, 1W, 8OHMS
6FUHZV
LCD panel SCR, M2X4.5, PHH, LP, ZPS 11
LCD hinge SCR, M3X5, PHH, LP, ZPS 11
LCD bezel SCR, M2X4.5, PHH, LP, ZPS 11
Keyboard SCR, M2.6X12, PHH, LP, ZPS 9
Hard-disk drive carrier
screws SCR, M3X3, PHH, LP, ZPS
Thermal cooling assembly SCR, M2X3.5, PHH, LP, ZPS 20
Touch pad SCR, M2.6X1.8, PHH, XLP, ZPS
Palmrest, front edge SCR, M2.6X12, PHH, LP, ZPS 12
Palmrest, hard-disk drive
area SCR, M2.6X5, PHH, LP, ZPS
Bottom-case bracket SCR, M2.6X5, PHH, LP, ZPS
Exhaust fan SCR, M2.6X12, PHH, LP, ZPS
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System board assembly,
CRNA, service kit SVCKIT, MB ASSY, PWA, ENGINE, CRNA 18
Service tag installation
diskette DSK, BIOS, FLDSVC, F3, US, CP
BIOS flash diskette KIT, BIOS, FLASH, UPG, F3, CP
Diagnostic diskette KIT, DSK, DIAG, F3, CRNA, WW
System board assembly ASSY, PWA, ENGINE, CRNA
Main system board PWA, PLN, 0M, NB, CRNA
Exhaust fan and
cable FAN, 25X25X10, CRNA
Thermal cooling
assembly SVC, SUBASSY, HTSNK, CPU, HYB, CRNA
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Dell Latitude CPt C-Series/CPi R-Series Service Manual 11
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Microprocessor, CRNA,
Service Kit SVC, PRM, PCA
xxx MHz
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Microprocessor shield ASSY, SHLD, EMI, PRC, MET
Kit-SVC, latch, slider,
BTN LTCH, BTN, Module
Foot, Rbr, Blk
(4 each) Foot, Rbr, Blk
Foot, Rbr, Strike Zone,
Blk Foot, Rbr, Strike Zone, Blk
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