Fan/heat sink assembly

Description	Spare part number

Fan/heat sink assembly (includes replacement thermal material) for use only with	489126-001
computer models with UMA graphics subsystem memory

Fan/heat sink assembly (includes replacement thermal material) for use only with	489154-001
computer models with discrete graphics subsystem memory

Before removing the 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 4-7).

5.Remove the following components:

a.Optical drive (see “Optical drive” on page 4-8)

b.Hard drive (see “Hard drive” on page 4-10)

c.Keyboard (see “Keyboard” on page 4-17)

d.Keyboard cover (see “Keyboard cover” on page 4-20)

e.Power button board (see “Power button board” on page 4-22)

f.Display assembly (see “Display assembly” on page 4-23)

g.Top cover (see “Top cover” on page 4-30)

h.Bluetooth module (see “Bluetooth module” on page 4-35)

i.System board (see “System board” on page 4-38)

Remove the fan/heat sink assembly:

1.Turn the system board right-side up, with the front toward you.

2.Disconnect the fan cable from the system board.

✎To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left side of the computer.

Removal and replacement procedures

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