Canon imagePRESS C800 Series Operation Manual page 212

Remove in the professional stacker /stapler the punch waste
Action
4 Discard the punch waste.
5 Push the punch waste tray back to its original
position, or as far as possible.
6 Close the front cover of the stacker/stapler.
212 Chapter 7 - Maintain the print system
IMPORTANT
Make sure that the punch waste tray
is completely emptied.
CAUTION
When you close the front cover of
the stacker/stapler, be careful not to
get your fingers caught. This can
cause personal injury.
imagePRESS C800 Series