Remove the two 6.4 mm-long screws that secure the D-Pad PCB inside the casing with a Phillips #0 screwdriver.

There are two pairs of prongs that secure the D-Pad PCB to the housing. Use your fingernails to squeeze each set of prongs inward while gently prying the PCB away from the housing to disengage them.

Repeat the previous bullet for the remaining set of prongs.

Carefully pull the PCB away from the housing.

Take care not to strain the connected ribbon cables.