Before removing the system board, 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 40
), and then remove the following components:
a.
Service cover (see
Service cover on page 41
)
b.
Hard drive (see
Hard drive on page 42
)
c.
Optical drive (see
Optical drive on page 50
)
d.
Keyboard (see
Keyboard on page 52
)
e.
Top cover (see
Top cover on page 55
)
f.
Speakers (see
Speakers on page 64
)
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:
●
WLAN module (see
WLAN module on page 45
)
●
Solid-state drive (see
Solid-state drive on page 47
)
●
Memory modules (see
Memory module on page 48
)
●
RTC battery (see
RTC battery on page 77
)
●
Heat sink (see
Heat sink on page 73
)
●
Fan (see
Fan on page 76
)
Remove the system board:
1.
Release the ground tape
(1)
that secures the display panel cable to the system board.
2.
Release the ZIF connector
(2)
to which the display panel cable is attached, and then disconnect
the display panel cable from the system board.
Component replacement procedures
71
