Samsung CLP-670N Service Manual page 102

● Code
21-010
● Symptom
There is the paper in MP tray but error message is displayed.
● Possible Cause
1. MP Paper Empty Sensor harness is not connected properly.
2. MP Paper Empty Sensor is defective.
● Troubleshooting method
1. Check the MP paper empty sensor connector. Reconnect it.
2. Check the MP paper empty sensor. If it is defective, replace it.
3. Check if the MP Empty actuator is broken.
Service Manual
Alignment & Troubleshooting
● Error message
Paper Empty in MP tray
4-43
Actuator-Empty Actuator-Empty
Samsung Electronics