Before removing the system board, 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 36).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 42)
b.
Optical drive (see
Optical drive on page 49)
c.
Keyboard (see
Keyboard on page 50)
d.
Hinge cover (see
Hinge cover on page 52)
e.
Rear cover (see
Rear cover on page 53)
f.
Top cover (see
Top cover on page 55)
g.
Subwoofer (see
Subwoofer on page 67)
h.
Processor fan (see
Processor fan on page 69)
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 47)
●
RTC battery (see
RTC battery on page 74)
●
WLAN module (see
WLAN module on page 44)
Remove the system board:
1. Remove the power connector (1) from the clip built into the base enclosure.
2. Disconnect the rear USB board cable (2) and the power connector LED board cable (3) from the
system board.
Component replacement procedures 71
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