Fan
Description Spare part number
Fan 537613-001
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-in) 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 36).
5. If your computer has WWAN capability, remove the SIM (see SIM on page 37).
6. Remove the following components:
a. Keyboard (see Keyboard on page 40)
b. Hard drive (see Mass storage devices on page 44)
c. Top cover (see Top cover on page 46)
Remove the fan:
1. Disconnect the fan cable (1).
2. Remove the 2 Phillips PM2.5×4.0 screws (2) that secure the fan to the base enclosure.
56 Chapter 4 Removal and replacement procedures