Processor heat sink
Description Spare part number
For use only with computer models equipped with quad-core processors 735372-001
For use only with computer models equipped with dual-core processors 735371-001
Before removing the processor heat sink, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 46)
5. Remove the service door (see
Service door on page 48).
6. Remove the optical drive (see
Optical drive on page 57) or upgrade bay hard drive (see Upgrade
bay hard drive on page 59).
7. Remove the keyboard (see
Keyboard on page 63).
8. Remove the top cover (see
Top cover on page 72).
Remove the processor heat sink:
1. Following the sequence stamped into the processor heat sink, loosen the four Phillips captive
screws (1) that secure the processor heat sink to the system board.
NOTE: If there is Mylar tape that secures the heat sink to the fan, lift up on the tape to
disengage the heat sink.
Component replacement procedures
95
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