Power button board
Description Spare part number
Power button board assembly 821169-001
Before removing the power button board, follow these steps:
1. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 26).
5. Remove the battery (see Battery on page 29).
6. Remove the following components:
a. Keyboard (see Keyboard on page 37)
b. Internal base plate (Internal base plate on page 42)
Remove the power button board:
1. Disconnect the cable from the system board (1).
2. Remove the Phillips PM2.5×2.5 screw (2) that secures the power button board to the top cover.
3. Push the lever left (3).
4. Slide the power button board left from beneath the hinge (4).
Reverse this procedure to install the power button board.
46 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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