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Fan
Description Spare part number
Fan 468830-001
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) 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 affected by high external temperatures, system power consumption, power management/
battery conservation configurations, 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, 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 43).
5. Remove the following components:
a. Optical drive (see
Optical drive on page 48)
b. Hard drive (see
Hard drive on page 51)
c. Keyboard (see
Keyboard on page 54)
d. Switch cover (see
Switch cover on page 57)
e. Top cover (see
Top cover on page 58)
f. Display assembly (see
Display assembly on page 63)
g. System board (see
System board on page 70)
h. Heat sink (see
Heat sink on page 80)
Remove the fan:
1. Disconnect the fan cable (1) from the system board.
2. Remove the two Phillips PM2.0×4.0 screws (2) that secure the fan to the system board.
84 Chapter 4 Removal and replacement procedures