Dell 1815dn Multifunction Mono Laser Printer - Manual (Page 138)

9. Return the levers, fuser door, rear cover stopper, and duplex guide to their original position.
10. Close the rear cover.
11. Open and close the front cover.
Printing automatically resumes.
Duplex Jam
Duplex Jam 0
1. Pull the duplex unit out of the printer.
2. Remove the jammed paper from the duplex unit.
If the paper does not come out with the duplex unit, remove the paper from the bottom of the printer.
3. Push the duplex unit to the printer.
4. Open and close the front cover.
Printing automatically resumes.
Duplex Jam 1
CAUTION: If you do not push the duplex unit in correctly, a paper jam may occur.