Fan
Description Spare part number
Fan L00843-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the sides 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.
Before removing the fan, 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. Place the computer in “Battery Safe mode” (Battery Safe mode on page 30).
3. Disconnect all external devices connected to the computer.
4. 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.
5. Remove the battery (Battery on page 58), and then remove the following components:
a. Service doors (Service doors on page 31).
b. Hard drive (Hard drive on page 37)
c. Keyboard (Keyboard on page 40)
d. Top cover (Top cover on page 44)
To remove the fan:
1. Position the computer upright on a at surface and open the display as far as possible.
2. Disconnect the fan cable (1) from the system board.
Component replacement procedures 55
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