HP Pavilion HDX9000, Maintenance And Service Manual, Page: 83 / 163

Processor fan
Description Spare part number
Processor fan 448162-001
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left and
right sides and rear panel of the computer. The computer uses two electric fans for ventilation. The fans
are controlled by a temperature sensor and are 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 grills located on the computer rear panel.
Before removing the processor fan, 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 38 ).
5
. Remove the following components:
a
.
Hard drive (see Hard drive on page 45 )
b
. Optical drive (see Optical drive on page 52 )
c
. Keyboard (see Keyboard on page 54 )
d
.
Hinge cover (see Hinge cover on page 56 )
e
. Rear cover (see Rear cover on page 57 )
f
. Top cover (see Top cover on page 59 )
g
.
Subwoofer (see Subwoofer on page 72 )
Remove the processor fan:
1
.
Disconnect the processor fan cable
(1)
from the system board.
2
. Remove the two Phillips PM2.5×8.0 screws (2) that secure the processor fan to the base enclosure.
Component replacement procedures 75