Power button board
Description Spare part number
Power button board (includes cable) 577922-001
Before removing the power button board, follow these steps:
1. Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device
on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the device.
3. Disconnect the power from the device by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the device.
4. Remove the battery (see
Battery on page 32).
5. If your device has WWAN capability, remove the SIM (see
SIM on page 33).
6. Remove the following components:
a. Keyboard (see
Keyboard on page 36)
b. Hard drive (see
Hard drive on page 39)
c. Top cover (see
Top cover on page 44)
Remove the power button board:
1. Disconnect the power button board cable (1).
2. Remove the 3 Phillips PM2.0×2.0 broadhead screws (2) that secure the power button board to the
base enclosure.
3. Remove the power button board (3).
Reverse this procedure to install the power button board.
Component replacement procedures 51
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