dell latitude c540 User Manual

Palm Rest: Dell Latitude C540/C640 Service Manual
 
1 M2.5 x 12-mm screws 
(3)
2 M2 x 3-mm screws (2)
3 hard-drive bay door
5.  Remove the two M2 x 3-mm screws that are located in the hard-drive bay d\
oor  labeled circle P. 
6.  Turn the computer over, and remove the three M2 x 3-mm screws that secur\
e  the palm rest to the bottom case: 
a.  Remove the two M2 x 3-mm screws that are located on the back edge of  the bottom case, underneath the display assembly. 
b.  Remove the M2 x 3-mm screw located...

Palm Rest: Dell Latitude C540/C640 Service Manual
 
1 M2 x 3-mm screws (3)
2 palm rest
3 palm-rest flex cable
4 bottom case
5 interface connector for 
palm-rest flex cable
6 back center of the palm 
rest
NOTICE: Carefully separate the palm rest from the bottom case to avoid 
damage to the palm rest. 
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Palm Rest: Dell Latitude C540/C640 Service Manual
8.  Starting at the back center of the palm rest, use your fingers to separa\
te the palm rest from the bottom case by lifting the inside of the palm rest wh\
ile 
pushing in on the outside. 
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Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service\
 Manual
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Microprocessor Thermal Cooling 
Assembly 
Dell™ Latitude™ C540/C640 Service Manual
Removing the Microprocessor Thermal Cooling 
Assembly 
NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and remove any installed batteries. 
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by 
touching an unpainted metal surface on the computer. 
NOTICE: Read...

Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service\
 Manual
 
1 microprocessor thermal 
cooling assembly
2 captive screws (4)
3 right side of thermal 
cooling assembly
4 recess in EMI shield 
(prying location)
4.  Insert a screwdriver into the recess in the EMI shield under the front l\
eft corner  of the thermal cooling assembly, and pry the assembly up and out of the \
system 
board. 
Replacing the Microprocessor Thermal Cooling 
Assembly...

Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service\
 Manual
NOTICE: To ensure proper thermal operation, always install a new, compatible 
thermal cooling assembly along with a new microprocessor. 
1.  Place the right side of the microprocessor thermal cooling assembly unde\
r the  palm rest and lower the assembly onto the system board. 
2.  Tighten the four captive screws, labeled 1 through 4, in consecutive ord\
er. 
Back to Contents Page...

Microprocessor Module: Dell Latitude C540/C640 Service Manual
Back to Contents Page 
Microprocessor Module 
Dell™ Latitude™ C540/C640 Service Manual
Removing the Microprocessor Module 
NOTICE: Disconnect the computer and any attached devices from electrical 
outlets, and remove any installed batteries. 
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by 
touching an unpainted metal surface on the computer. 
NOTICE: Read Preparing to Work Inside the Computer before performing the...

Microprocessor Module: Dell Latitude C540/C640 Service Manual
 
1 screwdriver 
(perpendicular to 
microprocessor)
2 pin-1 corner
3 processor die (do not 
touch)
4 ZIF socket
5 ZIF-socket cam screw
1.  Remove the 
hard drive. 
2.  Remove the 
keyboard. 
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the 
heat transfer areas on the microprocessor thermal cooling assembly. The \
oils in 
your skin reduce the heat transfer capability of the thermal pads....

Microprocessor Module: Dell Latitude C540/C640 Service Manual
3.  Remove the microprocessor thermal cooling assembly. 
NOTICE: When removing the microprocessor module, pull the module straight 
up. Be careful not to bend the pins on the microprocessor module. 
4.  To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate\
 the ZIF- socket cam screw counter-clockwise until it reaches the cam stop. 
The ZIF-socket cam screw secures the microprocessor to the system board.\
 Take 
note of the...

Microprocessor Module: Dell Latitude C540/C640 Service Manual
NOTICE: Do not touch the processor dienear the edges of the microprocessor 
module (on the substrate surrounding the die) while turning the cam sc\
rew. 
2.  Press down on the edges of the microprocessor module and tighten the ZIF\
  socket by turning the cam screw clockwise. 
3.  Install a new 
microprocessor thermal cooling assembly. 
NOTICE: To ensure proper thermal operation, always install a new, compatible 
thermal cooling assembly along...