I have a Firenzi FSF 650 SS, which I assume is built similarly. It is easiest to first separate the door from the oven - examine the hinges, find the latch on each hinge which can be lifted without tools, lift the latches on each hinge, then wiggle the door from the oven.
Next, remove the two inner screws at the bottom of the door. You should now be able to remove the inner door cover, which gives you full access to the inner oven glass.
gerin, April 2015