Fan - HP mt20 Maintenance And Service Manual

Fan

Description
Fan
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
a. Service door (see
b. Keyboard (see
c. Top cover (see
d. USB/audio board (see
e. Battery (see
To remove the fan:
1. Position the computer upright on a flat surface.
2. Disconnect the fan cable (1) from the system board.
3. Remove the Phillips PM2.5×5.0 screw (2) that secures the fan to the computer.
52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Battery on page 50), and then remove the following components:
Service door on page
Keyboard on page 32)
Top cover on page 39)
USB/audio board on page
Battery on page 50)
26).
49)
Spare part number
905706-001