System information

Fan
Description Spare part number
Fan 592970-001
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the right
side and rear panel 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 cord.
4. Remove the battery (see
Battery on page 39).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 41)
b. Top cover (see
Top cover on page 55)
c. Keyboard (see
Keyboard on page 57)
d. Display assembly (see
Display assembly on page 62)
e. System board (see
System board on page 67)
Remove the fan:
1. Turn the system board upside down, with the rear toward you.
2. Disconnect the fan cable (1) from the system board.
3. Remove the two Phillips PM2.5×6.0 screws (2) that secure the fan to the system board.
72 Chapter 4 Removal and replacement procedures ENWW