Power button board
Description Spare part number
Power button board (includes cable) 749650-001
Before removing the power button board, 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. Remove the battery (see
Battery on page 41).
5. Remove the keyboard (see
Keyboard on page 45).
6. Remove the top cover (see
Top cover on page 53).
To remove the power button board:
1. Position the top cover upside down.
2. Remove the Phillips PM2.0×3.0 screw (1) that secures the power button board to the top cover.
3. Lift the board and cable up and remove from the top cover (2) while pulling cable through the hole in
top cover (3).
Reverse this procedure to install the power button board and cable.
56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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