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Switch cover
Description Spare part number
Switch cover (includes caps lock LED board and cable, power button board and cable, and wireless
button board and cable)
454940-001
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 40).
5.
Remove the keyboard (see
Keyboard on page 50).
Remove the switch cover:
1.
Turn the computer upside down, with the rear panel toward you.
2. Remove the four Phillips PM2.5×9.0 screws (1) and the four black Phillips PM2.5×4.0 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 power button board cable (1) is connected and disconnect
the cable from the system board.
Component replacement procedures 53