The following procedure describes how to load paper in the MP tray.
Do not load paper above the "" mark.
Register the loaded paper in the machine. Proceed to "Registering the Paper Size, Type, or Weight".
Do not load paper of different sizes, types, or weights at the same time.
When adding paper, take the paper in the MP tray out, straighten the edges of both stacks of paper, and then load them.
Do not put anything other than print paper in the MP tray.