Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-110
Samsung Electronics
 Code
M1-5112
 Error message
Paper Empty in tray1
 Symptom / Cause
Paper is empty in Tray1. The status LED is red.
1. There is no paper in the tray1.
2. Actuator-Paper Empty is defective.
3. Photo Sensor is defective or connection is bad.
4. Engine Board is defective.
 Troubleshooting method
1. Load the paper in the tray1.
2. If the Actuator-Paper Empty is defective, replace it.
3. If the Photo Sensor is defective, replace it. Check if the connector is connected properly.
4. If the problem persists, replace the engine board.
 Code
M1-5612
 Error message
Paper Empty in MP
 Symptom / Cause
Paper is empty in Tray1. The status LED is red.
1. There is no paper in the MP tray.
2. Actuator-Paper Empty is defective.
3. Photo Sensor is defective or connection is bad.
4. Engine Board is defective.
 Troubleshooting method
1. Load the paper in the MP tray.
2. If the Actuator-Paper Empty is defective, replace it.
3. If the Photo Sensor is defective, replace it. Check if the connector is connected properly.
4. If the problem persists, replace the engine board.