HP 340 G3, Maintenance And Service Manual

Page: 59 / 112

Fan
Description Spare part number
Fan 813506-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of 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/heat sink assembly, 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 26 ).
5. Remove the optical drive (see Optical drive on page 27 ), if installed.
6. Remove the bottom cover (see Bottom cover on page 34 ).
To remove the fan:
1. Remove the display cable from atop the fan (1).
2. Remove the power connector cable from atop the fan(2).
3. Disconnect the fan cable (3) from the system board.
4. Remove the two Phillips PM2.0×4.0 screws (4) that secure the fan to the computer.
Component replacement procedures 51