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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 51).
5.
Remove the hard drive (see
Hard drive on page 52).
6. Disconnect the wireless antenna cables from the WLAN module (see
WLAN module on page 57).
7. Remove the following components:
a. Optical drive (see
Optical drive on page 59)
b. Keyboard (see
Keyboard on page 61)
c. Top cover (see
Top cover on page 66)
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 56
●
WLAN module (see
WLAN module on page 57
●
Solid-state drive (see
Solid-state drive on page 75)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 82)
●
Processor (see
Processor on page 88)
Remove the system board:
1.
Close the computer.
2. Turn the computer upside down, with the front toward you.
3. Disconnect the RTC battery cable (1) from the system board.
Component replacement procedures
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