Power button board
Description Spare part number
Power button board (includes cable) 718436-001
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 33) and then remove the following components:
a. Hard drive (see
Hard drive on page 34)
b. Memory module service cover (see
Memory module on page 40)
c. Optical drive (see
Optical drive on page 42)
d. Keyboard (see
Keyboard on page 47)
e. Top cover (see
Top cover on page 50)
Remove the power button board:
1. Detach the power button board cable (1) from the top cover. (The power button board cable is
attached to the top cover with double-sided tape.)
2. Remove the Phillips PM2.5×4.0 screw (2) that secures the power button board to the top cover.
3. Lift the left side of the power button board (3) until it rests at an angle, and then remove the
power button board by sliding it up and to the left (4).
Reverse this procedure to install the power button board.
54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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