Stop printing, then push the power button of the printer to turn OFF the printer.
Open the paper output cover of the printer, and if you find a jammed paper or foreign material is inside the printer, remove it.
After checking the above items, push the power button to turn ON the printer again.
Attention:When removing the jammed paper or foreign material, take extra care so that you do not touch the inner parts. Or, it may cause another printing problem.