Power button board
Description Spare part number
Power button board 905579-001
Power button board cable 905562-001
Before removing the power button board, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o 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 bottom cover (see Bottom cover on page 24).
5. Disconnect the battery cable from the system board (see Battery on page 25).
6. Remove the display assembly (see Display assembly on page 37).
Remove the power button board:
1. Disconnect the cable from the power button board (1).
2. Remove the PM2.0×3.0 screw (2) that secures the power button board to the computer.
3. Lift the board from the computer (3).
Reverse this procedure to install the power button board.
Component replacement procedures 43
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