Fan
Description Spare part number
Fan 925352-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the left side of the 
computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and 
is designed to turn on automatically when high temperature conditions exist. These conditions are aected by 
high external temperatures, system power consumption, power management/battery conservation 
congurations, battery fast charging, and software requirements. Exhaust air is displaced through the 
ventilation grill located on the left side of the computer.
Before removing the fan/heat sink assembly, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst 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 28).
5. Remove the optical drive (see Optical drive on page 29), if installed.
6. Remove the bottom cover (see Bottom cover on page 35).
To remove the fan:
1. Remove the three Phillips PM2.0×5.0 screws (1) that secure the fan to the computer.
2. Disconnect the fan cable (2) from the system board.
Component replacement procedures 43