Samsung ML-2251NP - Manual (Page 123)

S OLVING PROBLEMS
6.8
2 Remove any misfed paper by pulling it out by the visible
edge. Make sure that all of the paper is properly aligned in
the tray.
N OTE : If the jammed paper is not visible or if there is resistance
when you pull the paper, remove the tray from the printer and
carefully pull the jammed paper free from the printer.
3 Slide the tray back into the printer.
4 Open and close the front cover to resume printing.