HP 3500 - Manual (Page 183)

Jam in the duplexer
Note 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.
1. Remove Tray 2 and place it on a flat surface.
2. Remove any paper in the top of the tray opening.
3. On the left side of the tray opening, pull the green lever straight forward until the metal
paper-access plate (duplex pan) drops.
ENWW Clearing paper jams 171