Fan/heat sink assembly
Description Spare part number
Fan/heat sink assembly (includes replacement thermal material) 450594-001
Before removing the fan/heat sink assembly, 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 44).
5. Remove the keyboard (see
Keyboard on page 60).
6. Remove the switch cover (see
Switch cover on page 67).
Remove the fan/heat sink assembly:
1. Disconnect the fan cable (1) from the system board.
2. Remove the Torx T8M2.5×7.0 screw (2) that secures the fan/heat sink assembly to the computer.
3. Loosen the four Torx T8M2.0×10.0 screws (3) that secure the fan/heat sink assembly to the
computer.
4. Lift the front edge of the fan/heat sink assembly (1) to disengage it from the system board and
graphics card.
70 Chapter 4 Removal and replacement procedures
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