Modification of Canon 10D - Step 11
Now you have the last chance to backtrack!
Remove the thin frame (1) with 2 screws.
Remove the second frame with a small flat screwdriver because the frame is pressed on the filter. Be very very carefully.
Remove the filter plate with a small flat screwdriver because the filter is glued on the CCD-chip. Be very very very carefully to avoid a damage oft the CCD glass in the visible area.