Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-111
Samsung Electronics
 Code
M2-1110
 Error message
Paper Jam in tray1
 Symptom / Cause
The paper has jammed at the feed sensor.
1. Feed sensor detection error.
2. The Regi. Roller is contaminated or worn out.
3. There is any obstacles in the path.
 Troubleshooting method
1. Check the level value of the feed sensor. Check the harness connection.
2. Check if the Regi. Roller is contaminated or worn out.
3. If there is any obstacles or contamination in the path, clean or remove it.
 Code
M2-2110
 Error message
Jam top of duplex
 Symptom / Cause
The paper did not enter the duplex path and has jammed.
1. The duplex unit is not installed.
2. There is any obstacles in the paper path.
3. The duplex motor is defective.
4. Paper size lever position error.
 Troubleshooting method
1. Check if the duplex unit is installed properly.
2. If there is any obstacles or contamination in the path, clean or remove it.
3. Check if the duplex motor is operated properly. If the duplex motor is defective, replace it.
4. If the paper size lever is placed on wrong position, adjust it.