Heat sink assembly
NOTE: The heat sink assembly spare part kit includes replacement thermal material.
Description Spare part number
Heat sink for use in models with discrete graphics memory L14363-001
Heat sink for use in models with UMA graphics memory L14362-001
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 37).
5. Disconnect the battery cable from the system board (see Battery on page 50).
Remove the heat sink assembly:
1. Discrete graphics models: Loosen the six 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. The heatpipe is very fragile and can be
easily damaged and bent during removal.
52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts