Heat sink
NOTE: The heat sink spare part kit includes replacement thermal material.
Description Spare part number
For use only on computer models equipped with an Intel processor and a graphics subsystem with
discrete memory
765737-001
For use only on computer models equipped with an Intel processor and a graphics subsystem with UMA
memory
720541-001
Before removing the heat sink, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 34), and then remove the following components:
a. Service cover (see
WLAN module on page 35)
b. Hard drive (see
Hard drive on page 38)
c. Base enclosure (see
Base enclosure on page 45)
d. Display assembly (see
Display assembly on page 47)
e. Fan (see
Fan on page 55)
f. System board (see
System board on page 56)
Remove the heat sink:
1. Turn the system board upside down, with the front toward you.
2. Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips PM2.0×11.0
captive screws (1) that secure the heat sink to the system board.
60 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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