Fan/Heat Sink Assembly - HP Pavilion dm4 Maintenance And Service Manual

Fan/heat sink assembly

NOTE: All fan/heat sink assembly kits include replacement thermal material.
Description
Fan/heat sink assembly for use in UMA models in which the processor is not soldered to the system
board
Fan/heat sink assembly for use in UMA models in which the processor is soldered to the system
board
Fan/heat sink assembly for use in models with discrete graphics
NOTE: To properly ventilate the computer, allow at least a 7.6 cm (3 inch) clearance on the right
side and rear panel 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
5.
Remove the following components:
a. Hard drive (see
b. WLAN module (see
c. Optical drive (see
d. Keyboard (see
e. Top cover (see
f. Speaker assembly (see
g. Power connector cable (see
h. USB board (see
i. Display assembly (see
74 Chapter 4 Removal and replacement procedures
Battery on page 38).
Hard drive on page 45)
WLAN module on page
Optical drive on page
Keyboard on page 49)
Top cover on page 51)
Speaker assembly on page
Power connector cable on page
USB board on page 65).
Display assembly on page
42)
47)
70)
66)
58)
Spare part number
636940-001
642731-001
636939-001