Open the Small size guides, and load small-sized paper into the Paper Feeder Unit PF-712/Paper Feeder Unit PF-713.
The minimum width of the Side guides of Paper Feeder Unit PF-712 / Paper Feeder Unit PF-713 is 139.7 mm / 5.5". To load paper of the width less than the minimum, open the Small size guides.
Load the paper so that it is aligned with the left side of the tray.
Rotate the Side guide lock knobs of Side guides counterclockwise to loosen them.
Press down the Side guide lock release lever of front side Side guides and place the Small size guides flush against the paper.
Rotate the Side guide lock knobs of Side guides clockwise and lock the Small size guides.
Hold down Rear edge guide lock release lever of Rear guide plate and place against the paper.
The remaining paper amount indicator changes from "" to "".