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3. Lift the heat sink and fan from the system board (3).
4. To remove the fan, turn the heat sink upside down and remove the three Phillips PM2.0×3.0 screws
(1) that secure the fan to the heat sink.
5. Remove the fan (2).
Reverse this procedure to install the fan.
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.
Component replacement procedures 75