Jam in the duplexer
This message appears for HP Color LaserJet 3700dn and 3700dtn printer models only. The printer control panel displays the message 13.XX.YY JAM REMOVE TRAY 2.
Remove Tray 2 and place it on a flat surface.
Remove any paper in the top of the tray opening.
On the left side of the tray opening, pull the green lever straight forward until the metal paper-access plate (duplex pan) drops.
Remove any jammed paper.
Push the metal paper-access plate (duplex pan) up until it locks in place.
Replace Tray 2.
Press to resume printing.