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3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 47), and then remove the following components:
a. Optical drive (see
Optical drive on page 48)
b. Hard drive (see
Hard drive on page 49)
c. WLAN module (see
WLAN module on page 52)
d. Keyboard (see
Keyboard on page 56)
e. Top cover (see
Top cover on page 60)
NOTE: When replacing the system board, be sure that the following components are removed from
the defective system board and installed on the replacement system board:
●
Memory module (see
Memory module on page 54)
●
RTC battery (see
RTC battery on page 78)
●
Fan (see
Fan on page 80)
●
Heat sink (see
Heat sink on page 81)
● Processor (see
Processor on page 85)
Remove the system board:
1. Close the computer.
2. Turn the computer upside down with the front toward you.
3. Disconnect the optical drive connector cable from the system board.
4. Turn the computer right side up with the front toward you.
5. Open the computer.
6. Disconnect the following cables from the system board:
(1) Display panel cable
(2) Speaker cable
76 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts