Open the oven door as wide as possible and locate the pair of screws above each hinge on the inside of the door. Remove the screws and insert them into the holes in the side of hinge. The screws slide into place and do not need to be tightened.
Lift the door so it is open 45 degrees then slide it up and off its hinges. Set the door inside-up on a towel so you don't scratch any of the outer trim.
Remove the pair of screws at the top of the inner panel of the door and set them to one side. Slide the inner panel of the door downward and remove it from the appliance. If the inner pane is broken, you can now lift it out. Watch for sharp pieces of glass.
Take out the four screws at the bottom of the door to remove the next layer of the door. Lift the trim up and out to access the outer glass. Remove the broken pane and insert the new one in place.
Replace the layer of trim over the outer panel and replace the four screws at the bottom of the door. Slide the remaining piece of trim into position and replace the screws at the top of the door.
Lower the door back onto its hinges, which should still be held at a 45-degree angle by the hinge screws. Open the door as wide as possible, remove the screws from the holes in the hinge and screw them back into their original holes.