Canon FAX-L800 - Manual (Page 279)

Canon FAX-L800 User’s Guide ENGLISH
15-9 Chapter 15 Maintenance & Frequently Asked Questions
7. Before you remove the side cassette, remove the output tray and document
tray.
Remove the side paper cassette.
After you remove the side paper cassette, make sure no paper is hanging over
the rear edge of the paper cassette.