Table 4-11 Heat sink description and part number
Description Spare part number
Heat sink N05304-001
IMPORTANT: The bond between the heat sink and the processor can be very tight.
If the computer will turn on, before removing the heat sink, turn on the computer until it warms the heat
sink. Warming the heat sink loosens the bond between the heat sink and the processor, thereby making
it easier to separate them.
Be sure not to pull the processor out of the socket when you lift the heat sink, especially if you cannot
warm the heat sink before removal. Inadvertently removing the processor can damage the pins.
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 22).
2. Remove the access panel (see Access panel on page 23).
3. Remove the optical drive (see Optical drive on page 25).
4. Remove the front bezel (see Front bezel on page 26).
5. Remove the fan hood (see Fan vent on page 39).
Remove the heat sink:
1. Disconnect the fan cable (1) from the system board.
2. In the order indicated on the heat sink, loosen the four captive Torx screws (2), and then lift the heat
sink (3) out of the computer.
IMPORTANT: Be sure to loosen the screws in the order indicated by the numbers stamped on the
heat sink.
IMPORTANT: For optimum thermal performance, be sure not to touch the thermal grease on the
surface of the processor or the heat sink.
Heat sink
41
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