Power button board
Description Spare part number
Power button board (includes cable) 734285-001
Before removing the power button 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 44), and then remove the following components:
a. Service cover (see
Service cover on page 45)
b. Hard drive (see
Hard drive on page 46)
c. Optical drive (see
Optical drive on page 48)
d. Keyboard (see
Keyboard on page 57)
e. Top cover (see
Top cover on page 65)
Remove the power button board:
1. Turn the top cover upside down, with the front toward you.
2. Remove the Phillips PM2.0×3.0 screw (1) that secures the power button board to the top cover.
3. Release the clips (2) that secure the power button board to the top cover.
4. Remove the power button board (3) and cable
Component replacement procedures 73
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