Canon imageRUNNER 3530 Reference Manual page 309

IMPORTANT
If the paper size dial is not positioned correctly to the paper size loaded in the
paper drawer, the wrong paper size will be shown on the touch panel display. This
may also cause paper jams, dirty prints, or make the inside of the machine dirty.
6
Change the paper drawer's size sticker to match the new
paper size.
7
Gently push the paper drawer back into the machine until it
clicks into place in the closed position.
CAUTION
When returning the paper drawer to its original position, be careful not to
get your fingers caught, as this may result in personal injury.
Size Sticker
Paper Drawers
7
7-9