Dell 5310n Mono Laser Printer - Manual (Page 19)

23x Paper Jam Open Duplex Rear Door
1. Open the duplex rear door.
2. Remove the jammed media.
Depending on the media location, pull the media either up or down.
3. Close the duplex rear door. Make sure it snaps into place.
4. Press the Select button .
23x and 24x Jams
Paper jams in these areas can occur on the incline surface of a tray or across more than one tray. To clear these areas:
1. Open the printer paper tray, and remove any jammed media.