8.
Lift the system board
(2)
up on its right end and remove it from the computer .
Reverse this procedure to install the system board.
RTC battery
Description
Spare part number
RTC battery
683601-001
Before removing the RTC battery, 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.
5.
Remove the following components:
a.
Bottom door (see
b.
Hard drive (see
).
c.
Optical drive (see
d.
Metal heat shield (see
e.
).
f.
Heat sink (see
g.
Keyboard (see
).
Component replacement procedures
73