Reset the machine by lifting the scanner cover from the front of the machine and then close it.
Close the Outer Rear Cover.
Make sure the cover is closed correctly.
Using both hands, use the finger holds on both sides of the machine to lift the scanner cover into the open position.
Make sure that there is no jammed paper left in the corners of the machine.
Push paper tray #1 and paper tray #2 firmly back into the machine.