Unplug your Emerson microwave's electrical cord from the wall outlet and set the oven on a flat surface where you can access the rear.
Unfasten the screws located along the bottom edge of both sides. Use a Phillips head screwdriver to turn the screws counterclockwise and completely remove them.
Remove the screws along the back of the microwave that secure the back edge.
Hold the casing with one hand on each side of the casing and pull it firmly toward the back of the unit until it comes off of the frame.