3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 49), and then remove the following components:
a. Optical drive (see
Optical drive on page 55)
b. Service door (see
Service door on page 50)
c. WLAN module (see
WLAN module on page 53)
d. Memory module (see
Memory module on page 51)
e. Keyboard (see
Keyboard on page 62)
f. Top cover (see
Top cover on page 67)
g. Hard drive (see
Hard drive on page 71)
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:
●
Hard drive connector cable
●
Power connector cable (see
Power connector cable on page 95)
●
RTC battery (see
RTC battery on page 87)
●
Fan (see
Fan on page 89)
●
Heat sink assembly (see
Heat sink assembly on page 91)
Remove the system board:
1. Disconnect the following cables from the system board:
●
Display panel cable (1)
●
Speaker cable (2)
Component replacement procedures
83