Fan/heat sink assembly
Description
Spare part number
Fan/heat sink assembly for use in computer models with AMD processors (includes thermal material) 455843-001
Fan/heat sink assembly for use in computer models with Intel processors (includes thermal material)
450096-001
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
Battery on page 53
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive on page 54
)
b
.
Optical drive (see
Optical drive on page 64
)
c
.
Keyboard (see
Keyboard on page 66
)
d
.
Switch cover (see
Switch cover on page 69
)
e
.
Display assembly (see
Display assembly on page 71
)
f
.
Top cover (see
Top cover on page 80
)
g
.
Wireless switch board (see
Wireless switch board on page 85
)
h
.
Audio board (see
Audio board on page 88
)
i
.
Bluetooth module (see
Bluetooth module on page 89
)
j
.
USB board (see
USB board on page 90
)
k
.
System board (see
System board on page 95
)
100 Chapter
4
Removal and replacement procedures
