Toshiba e-Studio 2500c Operator's Manual page 381

5
See the size indication on the touch panel to check the paper size
registered for the drawer mentioned in the message.
6
Place the paper, whose size is same as the one you have checked
at step 5, in the drawer mentioned in the message.
P.52 "Preparation 2- Setting Copy Paper"
7
The job is resumed.
If you change the paper size again after the completion of the job, check that the paper
size placed in the drawer is the same as the one registered in the equipment for the
corresponding drawer.
"Check paper size setting on control panel for drawer N" 379