dell latitude cpx hcpx j series User Manual

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The modem assembly is optional. The modem (if present) must be removed 
before the main system board can be removed (see Figure 21).









	
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1. Remove the main battery and secondary battery (if present).
2. Remove the keyboard assembly.
3. Remove the display assembly.
4. Remove the palmrest assembly.
5. Remove the 10-mm screw and washer securing the modem assembly (see 
Figure 21).

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1. Press the RJ11 connector of the modem assembly into the hole in the bot-
tom case assembly.
2. Carefully align and press the modem into the system board connector.
3. Replace the internal modem 10-mm screw and washer (see Figure 21).
10-mm screw
internal modem
M2.5x10
case plug for modem
system board 
connector for the modem 
						

							34 Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Ser vice Manual




The system board’s basic input/output system (BIOS) chip contains the system 
service tag number, which is also visible on a bar-code label on the bottom of 
the computer. The replacement kit for the system board assembly includes a 
diskette that provides a utility for transferring the service tag number to the 
replacement system board assembly. 
	
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1. Remove the main battery and secondary battery (if present).
2. Remove the device from the modular bay (if present).
3. Remove the keyboard assembly.
4. Remove the display assembly.
5. Remove the palmrest assembly.
6. Remove the microprocessor module.
7. Verify that all PC Cards or plastic blanks are removed from the PC Card 
slot.
8. Verify that the PC Card ejectors do not extend from the PC Card slot.
9. Remove the two screws securing the system board assembly (see 
Figure 22).

Locate and remove the 4-mm screw with captive washer on the far left 
side of the computer between the hard-disk drive assembly and the PC 
Card slot.

Locate and remove the 4-mm screw with captive washer on the far 
right side of the computer in front of the thermal cooling assembly and 
to the right of the microprocessor module. This assumes that an 
optional modem is not present.
NOTES: If the optional modem is present in your system, locate and 
remove the 10-mm screw with washer that secures the modem assembly.
You can easily locate these screws by looking for the white marks on the 
system board (or modem) that outline the captive washers (see Figure 22). 
						

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10. Remove the modem (if present).
11. Lift the system board assembly out of the bottom case assembly.
	
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1. Install the replacement system board.
2. Replace the modem (if present).
3. Replace the system board mounting screws.
4. Replace the microprocessor, the palmrest assembly, the display assembly 
and the keyboard assembly.
NOTE: Be sure to transfer the memory module(s) to the replacement system 
board assembly.
5. Replace the modular bay devices and any PC Cards or plastic blanks in the 
PC Card slot.
6. Insert the diskette (or CD-ROM) that accompanied the replacement system 
board assembly into the appropriate drive, and turn on the computer. 
Follow the instructions on the display screen.
NOTE: After replacing the system board assembly, be sure to enter the sys-
tem’s service tag number into the BIOS of the replacement system board 
assembly.
4-mm screw with 
captive washers 
system board assembly
bottom case assembly
M2.5x4
M2.5x10
10-mm screw (system 
with modem)
or 4-mm screw (system
without modem)
white marks on 
the system board 
						

							36 Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Ser vice Manual
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1. Remove the main battery and secondary battery (if present).
2. Remove the device from the modular bay.
3. Remove the keyboard assembly.
4. Remove the display assembly.
5. Remove the palmrest assembly.
6. Remove the microprocessor module.
7. Remove the modem (if present).
8. Remove the system board assembly.
9. Disconnect the exhaust-fan power cable from the connector on the system 
board.
10. Remove the two 4-mm screws securing the thermal cooling assembly and 
exhaust fan, and then remove the thermal cooling assembly and exhaust 
fan (see Figure 23).
4-mm screws (2)
thermal cooling 
assembly and exhaust fan
M2.5x4 
						

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1. Remove the main battery and secondary battery (if present). 
2. Remove the device from the modular bay.
3. Remove the keyboard assembly.
4. Remove the display assembly.
5. Remove the palmrest assembly.
module latches (2)
springs (2)sliders (2)
module latch button (2)bottom case assembly
location of 
snap tabs (2) 
						

							38 Dell Latitude CPt V/CPt S Series and CPx H/CPx J Series Ser vice Manual
6. Remove the left module latch button from the bottom case assembly by 
carefully squeezing the snap tabs (see Figure 25). 
Apply pressure to the module latch and spring while unsnapping the snap 
tabs to prevent the module latch assembly from coming loose from the 
case. If the module latch assembly does come loose from the case:
a. Carefully reinsert the spring onto the slider on the module latch, and 
reinstall the module latch into the holding features on the inside of the 
case.
b. Ensure that the slider is inserted in its respective hole, that the side of 
the latch with the two bumps is facing the back of the case, and that 
the surface with the wear ribs is facing the bottom of the case (see 
Figure 25).
7. Snap in the new latch button from the bottom of the base, making certain 
its snap tabs are fully engaged in the module latch.
8. Ensure that the newly installed latch moves smoothly and freely when 
pushed and released.
9. Repeat steps 6 through 8 for the latch on the right side.

*	::$

bumps (2)
wear ribs (2) 
						

							Index 1



	
12.1-inch LCD display panel
removal, 
25
replacement, 28
12.1-inch LCD flex cable
removal, 
26
replacement, 26
12.1-inch LCD panel inverter
removal, 
26
replacement, 27
14.1-inch LCD display panel
removal, 
22
14.1-inch LCD flex cable
removal, 
22
%
battery (in modular bay)
removal, 
12
battery (reserve)
removal, 
32

CD-ROM drive
removal, 
12
computer
exploded view, 
10
working inside, 2
 
diskette drive
removal, 
12
display assembly
bezel, removal, 
21
removal, 20
display assembly latch
removal, 
29
display panel, 12.1-inch LCD
removal, 
25
replacement, 28


field-replaceable parts and 
assemblies
illustrated, 
10
list of, 6
flex cable, 12.1-inch LCD
removal, 
26
replacement, 26
flex cable, 14.1-inch LCD
removal, 
22
&
grounding to dissipate static 
electricity, 
3 
						

							2 Dell Latitude CPt V/CPt S Series and CPx H/Cpx J Series Ser vice Manual 

hard-disk drive assembly
removal, 
11

inverter, 12.1-inch LCD panel
removal, 
26
replacement, 27
(
keyboard assembly
removal, 
15
)
memory module
removal, 
13
memory module cover
removal, 
12
microprocessor module
removal, 
18
modular bay devices
removal, 
12
module latch assemblies
removal, 
37

palmrest assembly
removal, 
30


reserve battery
removal, 
32

screw identification and tightening, 3
sockets
memory module, 
13
SuperDisk LS-120 drive
removal, 
12
system board assembly
removal, 
18

thermal cooling assembly
removal, 
36
tools, 2
travel module
removal, 
12
*
ZIF connectors, 5 
						

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