Traduciendo paso 3
Here is the keyboard ribbon cable seated in the zero insertion force (Zif) connector. The keyboard is now separated and can now be removed.
Release the Zif connector to which the power button board cable is connected, by lifting the clasp of the Zif connector in an upward direction.
Lift the left and right sides of the switch cover until it detaches from the computer, but do not yet try to remove it.