Canon D1 User Manual page 19

If a booklets jam, open the cover or mechanism shown below to
remove the jammed booklets.
Delivery Section Cover Transport Belt Unit
Front Cover
Trim Unit
CAUTION
When removing jammed
booklets from the trim sec-
tion, take care not to touch
the blade edge.
· If the booklets jam frequently, refer to page 3-4 for instructions on correcting the
problem.
2-4 Operation While Trimming