Heat sink/fan assembly
NOTE: The heat sink/fan assembly spare part kit includes replacement thermal material.
Description Spare part number
Heat sink/thermal module with fans 781954-001
Before removing the heat sink/fan assembly, 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. Bottom cover (see Bottom cover on page 31)
5. Remove the battery (see Battery on page 36), and then remove the following components:
Remove the heat sink/fan assembly:
1. Disconnect both fan cables (1) (2) from the system board.
2. Loosen the captive Philllips screw from each fan (1).
3. Following the sequence stamped into the heat sink, loosen the three captive Philllips screws (2) that
secure the heat sink to the system board.
Component replacement procedures 55
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