Traduzione in corso passo 3
With care, rotate the logic board assembly anti-clockwise (looking at the power button) until the circuit board is ~90° from it's starting position and now facing up.
Slide the assembly out of the keyboard through the end with the power button. If you encounter resistance try rotating the board slightly more or less until it slides out with ease.
Take care to hold the delicate ribbon cable out of the way while doing this to avoid accidentally tearing it.