3.
Remove the Phillips PM2.0×3.0 screw (2) that secures the fan, and then remove the fan (3).
Reverse this procedure to install the fan.
Heat sink
NOTE: The heat sink spare part kit includes replacement thermal material.
Description Spare part number
Heat sink for use in computers with UMA graphics subsystems 605749-001
Heat sink for use in computers with discrete graphics subsystems 605750-001
Before removing the 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 56).
5. Remove the service door (see
Service door on page 56).
6. Remove the fan (see
Fan on page 69).
Remove the heat sink on computers with UMA graphics subsystems:
1. Position the computer right-side up with the front facing you.
2. Following the sequence stamped into the heat sink, loosen the captive screws (1) and (2) around
the processor.
70 Chapter 4 Removal and replacement procedures
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