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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:
●
Memory module (see
Memory module on page 90)
●
Heat sink (see
Heat sink on page 127)
●
Processor (see
Processor on page 130)
Remove the system board:
1. Turn the computer right-side up, with the front toward you.
2. Open the computer.
3.
Release the ZIF connector (1) to which the Touchpad cable is connected, and then disconnect
the Touchpad cable (2) from the system board.
4. Release the ZIF connector (3) to which the fingerprint reader board cable is connected, and then
disconnect the fingerprint reader board cable (4) from the system board.
5. Disconnect the power connector cable (5) from the system board.
6. Close the computer.
7. Turn the computer upside down, with the battery bay toward you.
8.
Remove the Torx TM2.5×4.8 screw (1) that secures the ground loop (2) to the left display hinge.
9.
Release the display panel cable (3) from the routing channel (4) attached to the system board.
Component replacement procedures
125