Samsung ML-2851ND/SEE Service Manual page 68

4.1.7.4 In the duplex unit area
If the duplex unit is not inserted correctly, paper jam may occur. Make sure that the duplex unit is inserted correctly.
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.
Service Manual
Alignment & Troubleshooting
1
1
duplex unit
Duplex jam 1
1. Open the rear cover.
2. Pull the guide rear on each side down and remove
the paper.
Return the guide rear to its original position.
1
3. Close the rear cover. Printing automatically
resumes.
4-18
1
guide rear
Samsung Electronics