Manual

Fans
Description Spare part number
Fan for use over the processor 848251-001
Fan for use over the graphics card 848252-001
Before removing the fan, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 29).
5. Disconnect the battery (see Battery on page 31).
6. Remove the heat sink (see Heat sink assembly on page 58).
Remove the fans:
1. To remove the graphics board fan (left in following image):
a. Remove the display cable from the clips in the fan (1).
b. Disconnect the fan cable from the system board (3).
c. Loosen the two captive Phillips screws that secure the fan to the computer (4).
d. Remove the fan assembly (5).
2. To remove the graphics board fan (right in following image):
Component replacement procedures 51