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Before removing the switch cover, follow these steps:
1.
Shut down 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 all external devices connected to the computer.
3.
Disconnect the power from the computer by first 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 39).
Remove the switch cover:
1.
Turn the computer upside down, with the rear panel toward you.
2. Remove the two Torx T8M2.5×9.0 screws (1) and the three Torx T8M2.5×3.0 broad-head
screws (2) that secure the switch cover to the computer.
3.
Turn the computer right-side up, with the front toward you.
4.
Open the computer as far as possible.
5. Release the ZIF connector to which the button board cable (1) is attached, and disconnect the cable
from the system board.
48 Chapter 4 Removal and replacement procedures