I suspect the broken UV filter is wedged between the diffuser and frame. Try to wiggle the broken piece to remove it.
Originally Posted by frotog
The Diffuser is under the UV filter. This is made up of many (15 or so) thin glass rods about 70mm long, which fit, along with a tensioning spring, in a metal frame. Yes, it does look corrugated, but all the glass rods are separate. First, remove the 4 screws holding the metal frame to the chassis. You may need to access these screws, or the nuts, from below (I've attached a picture, looking up from below the head). Then remove this diffuser assembly intact (without opening the metal frame holding all those rods). Try to clean the diffuser assembly without further disassembly.
But if you must disassemble it, remove 4 very small screws and nuts holding the frame together. Carefully remove the top cover, and then the tensioning spring, and finally the glass rods. When reassembling, place all glass rods in the frame, then the tensioning spring (the point of the spring goes to the outside of the case), and cover all with a thin sheet of paper while carefully holding all in place with the fingers. Then slide the top cover over the paper, being careful not to let the glass rods pop-up out of the frame (remember, they are under tension).
The shutter motor is attached to a circuit board, and that board is attached to the chassis by 2 screws. Once this assembly is removed, the shutter is just slid out of the way. When you re-install the assembly, the shutter blade should pivot freely and not be bent.
For a replacement UV filter, try Jens Jensen in Oregon at 800-675-1493 or Stone Mills in Canada at 613-358-5658.
Last edited by resummerfield; 03-04-2010 at 12:45 PM. Click to view previous post history.