Unplug the power supply for your Maytag microwave from the wall outlet.
Open the microwave door by pressing down on the button located on the left-hand corner of the microwave.
Locate the vent grille at the top of the inside of the microwave. Behind the vent is the light bulb cover.
Use a screwdriver to remove the screws on the vent grille. Pull the grille forward then lift it out.
Open the light bulb cover and take out the old bulb. Insert a new bulb then replace the cover.
Reattach the vent grille then reinsert the two screws into the grille. Shut the microwave door and reconnect the power supply.