Heat sink assembly
NOTE: The heat sink assembly spare part kit includes replacement thermal material.
Description Spare part number
Heat sink L13680-001
Before removing the heat sink 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. Remove the bottom cover (see Bottom cover on page 38).
5. Disconnect the battery cable from the system board (see Battery on page 40).
Remove the heat sink assembly:
1. Loosen the four captive screws on the heat sink following the sequence stamped on the heat sink (1),
and then remove the heat sink from the system board (2).
CAUTION: Take extreme care when removing the heat sink and fan assembly. The heat pipe is very
fragile and can be easily damaged and bent during removal.
54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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