3. Remove the ngerprint reader board and cable assembly from the top cover (3).
Reverse this procedure to install the ngerprint reader assembly.
Power button board
Description Spare part number
Power button board assembly 767442-001
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 battery (see Battery on page 36).
5. Remove the following components:
a. Service doors (see Service door on page 37)
b. Keyboard (see Keyboard on page 49)
c. Hard drive (Hard drive on page 39)
Component replacement procedures 65
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