Heat sink
NOTE: The heat sink spare part kit includes replacement thermal material.
Description Spare part number
Heat sink for use in models with UMA graphics memory 812683-001
Heat sink with fan for use in models with UMA graphics memory 830002-001
Heat sink for use in models with discrete graphics memory 812684-001
Before removing the heat sink, 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 35).
5. Disconnect the battery.
Remove the heat sink:
1. Following the 1 through 4 sequence stamped into the heat sink, remove the four Phillips PM2.0×3.0
screws (1) that secure the heat sink to the system board.
52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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