Casio CTK-501 LCD Screen Replacement

Flip the keyboard over so that the bottom is facing up.

Remove the twenty-seven 12 mm screws from the dark-grey panel using a Phillips #2 screwdriver.

Remove the bottom panel by lifting and pulling it towards yourself.

Flip open the top half of the keyboard.

Set the keyboard onto the bottom half with the internal parts facing up.

Completely unscrew and remove all six of the screws on the central circuit board.

Lift the circuit board out of your way.

Remove tape from the LCD screen and remove the screen completely.

Replace the LCD screen and tape it down to the top cover.

Place the circuit board back on top of the LCD screen and screw all of the screws completely in their original positions.