6.Remove the system board (3) by sliding it up and to the right at an angle.

Reverse this procedure to install the system board.

Heat sink

NOTE: The heat sink spare part kit includes replacement thermal material.

Description

Spare part number

 

 

For use only on computer models equipped with a graphics subsystem with discrete memory

686021-001

 

 

For use only on computer models equipped with a graphics subsystem with UMA memory

693371-001

 

 

Before removing the heat sink, follow these steps:

1.Turn off 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 the power from the computer by unplugging the power cord from the computer.

3.Disconnect all external devices from the computer.

4.Remove the battery (see Battery on page 67), and then remove the following components:

a.Service cover (see Service cover on page 69)

b.Hard drive (see Hard drive on page 75)

c.Optical drive (see Hard drive on page 75)

d.WLAN module (see WLAN module on page 81)

e.WWAN module (see WWAN module on page 79)

f.Fan (see Fan on page 85)

110 Chapter 4 Removal and replacement procedures