The Canon Canoscan 9950F Scanner, before doing anything.
With the Lid removed.
Remove the two screws, that are recessed in the well for
the lid hinge.
Use a small screwdriver to raise the glass cover plate.
Picture of the cover raised.
Glass Cover Plate removed.
Glass popped up.
Pull the Glass forward and raise the glass as you pull forward.
Glass is Removed. Inside view of the Scanner.
Location of the screws holding the cover of the scanning
element, lamp and the mirrors.
As indicated, use a screwdriver to release and raise the cover.
Mirror cover plate raised. The lamp is a part of the cover plate.
View of the mirrors inside the scanning head. This is a view from the other side of the scanner.
Cleaning of the mirrors should be done with caution. These mirrors have a surface coating and could be easily damaged.
Re-assemble the scanner in reverse order.
Watch your fingers, don't get fingerprints on the inside of the glass
after all the hard work.