Xerox WorkCentre PE120-120i-3124 - Manual (Page 191)

Troubleshooting 9.11
9
In the Bypass Tray
“Bypass Jam” appears on the display when you try to print using
the Bypass tray and the machine does not detect paper. This
may be a lack of paper or improper paper loading.
If the paper is not feeding properly, pull the paper out of the
machine.
To resume printing, open and close the front door.