Remove the fan assembly:
1. Disconnect the fan cable (1) from the system board.
2. Remove the Phillips PM2.0×9.0 screw (2) that secures the fan assembly to the top cover.
3. Remove the fan assembly (3).
Reverse this procedure to install the fan assembly.
NOTE To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left
and right sides of the computer.
The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is
designed to be turned 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 applications. Exhaust air is displaced
through the ventilation grill located on the left side of the computer.
Heat sink
Description Spare part number
Heat sink (includes thermal paste) 438529-001
Before removing the heat sink, 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.
50 Chapter 5 Removal and replacement procedures ENWW
