12.
Remove the system board (2) by sliding it up and to the right at an angle.
Reverse this procedure to install the system board.
Heat sink
Description Spare part number
Heat sink (includes replacement thermal material) 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 29), and then remove the following components:
a. Service cover (see
Service cover on page 30)
b. Solid-state drive (see
Solid-state drive on page 32)
c.
Optical drive (see
Optical drive on page 31)
d. WLAN module (see
WLAN module on page 37)
e. Fan (see
Fan on page 39)
f. Keyboard (see
Keyboard on page 40)
56 Chapter 4 Removal and replacement procedures
