HP ProBook 4710s Maintenance And Service Manual page 85

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