Canon imagePROGRAF iPF6400 - Manual (Page 865)

4
Fold a sheet of Plain Paper two or three times (a) and
insert it under the Paper Retainer (b) from behind the
printer to wipe the entire surface of the Paper Retainer
clean.
5
Attach the Roll Feed Unit. (See "Installing the Roll Feed Unit.") →P.552
6
Plug the power cord into the outlet.
iPF6400 Cleaning the Paper Retainer
User's Guide
Maintenance and Consumables
Cleaning the Printer
865