Heat sink
Description Spare part number
Heat sink for use in models with discrete graphics memory (includes replacement thermal material) 807524-001
Heat sink for use in models with UMA graphics memory (includes replacement thermal material) 807523-001
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 top cover (see Top cover on page 26).
5. Remove the system board (see System board on page 38).
To remove the heat sink assembly:
1. Position the system board upside down.
2. If disassembling a model with discrete graphics, disconnect the fan cable from the system board (1).
3. In the order indicated, loosen the six Phillips screws (2) – (7) that secure the heat sink to the system
board.
4. Remove the heat sink (8) from the system board.
5. If disassembling a model with UMA graphics, disconnect the fan cable from the system board (1).
6. In the order indicated, remove the four Phillips PM2.0×3.0 screws (2) – (5) that secure the heat sink to
the system board.
44 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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