Canon imagePRESS C7010VPS Operating Information Manual page 275

Load the media into the inserter (optional)
Adjust the slide guides to fit the paper size.
1.
[424] Upper tray
[425] Lower tray
Open a package of paper, and remove the paper stack.
2.
#
When loading paper, take care not to cut your hands on the edges of the paper.
Load the required media into the selected tray.
CAUTION
Chapter 9 - Paper, toner, and staples 275