Canon imageCLASS 2300 Basic Manual page 52

3
Detach the paper end guide by pushing it to the left and pulling
up, and attach it again aligning it with the mark for the desired
paper size.
NOTE
Attach the end guide while pressing down the point indicated with "A".
If you are setting for 11" x 17" paper, attach the end guide to the 11" x 17" indicator
on the right rear side of the paper drawer.
4
Lift the lock lever vertically, and slide the side guide to align it
with the mark for the size of the paper you are loading.
Loading Paper 3-9
3