Lexmark C912 User Reference Manual page 21

5
Place the paper in the tray, print side down.
Note: Do not exceed the maximum stack height for recommended media shown in the
stack height table on the Quick Reference sheet or in the
Overfilling the tray may cause jams.
6
Squeeze the front paper guide lever and slide the guide until it lightly touches the stack of
paper. Make sure the left paper guide is positioned snugly against the stack of paper. If
necessary, squeeze and slide the left paper guide until it latches into place against the paper
stack.
Printing
Loading paper
16
Media guidelines.