In The Duplex Unit Area - Samsung SCX-5835 series User Manual

4. If you see the jammed paper, push the pressure lever on each side up
and remove the paper. Skip to step 9.
If you still do not see the paper, go to the next step.
5. Release the strip, the rear cover stopper, and fully open the rear cover,
as shown.
6. Unfold the duplex guide fully.
7. While pushing the fuser lever to the right, open the fuser door.
8. Pull the jammed paper out.
If the jammed paper does not move when you pull, push the pressure
lever on each side up to loosen the paper, and then remove it.
9. Return the lever, door, stopper, and guide to their original position.
10. Close the rear cover. Printing automatically resumes.

In the duplex unit area

Click this link to open an animation about clearing a jam.
If the duplex unit is not inserted correctly, a paper jam may occur. Make
sure that the duplex unit is inserted correctly.
1. Pull the duplex unit out of the machine.
Troubleshooting_ 5