Canon WS8400 Service Manual page 110

Chapter 4
f) Upper left cover/upper right cover
Removing the upper left cover/upper right cover
Clicking the figure number under the video mark allows you to view the movie showing the procedure.
1) When removing the upper left/upper right cover [1], remove the left/right circle cover (L), left/right circle cover (S), and left-right side cover.
2) Insert the flathead screwdriver at the position shown in the figure below and disengage the hook [2] to remove the upper left/upper right cover.
g) Rear cover (left)/rear cover (right)
Removing the r ear cover (left)/rear cover (right)
4-10
[3] [2]
[2]
[1]
F-4-20
F-4-21
[1]
F-4-22