Canon DADF-M1 Service Manual page 74

Chapter 3
[1]
F-3-2
5) Bend up the edge of the rubber cover
[1], and remove the 2 screws [2]; then,
detach the angle guide plate [3].
[1]
F-3-3
6) Remove the 3 knurled screws [1], and
3-2
[3]
[2]
[1]
slide the machine toward the rear and lift it
to detach.
F-3-4
[1]