Load Specified Paper in Tray 1 (MPT) Load Specified Paper in Tray 1 (MPT) Look at the control panel and note the type, size, and orientation of the paper that you need to load in the tray. Caution: The type of paper you load in the tray must be the same as the type specified on the control panel. If you fail to do this print-quality problems can occur and the fuser can be damaged.