Fan/heat sink assembly, H. Audio board see Audio board on page

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)