Samsung ProXpress M453x series Service Manual page 174

4. Troubleshooting
► Error Code
M1–5612
► Error message
Paper is empty in all tray. Load paper
► Symptom
Paper is empty in MP tray.
► Troubleshooting method
1) Check if the paper is loaded in MP tray. Load the paper.
2) Check if the MP empty actuator is assembled correctly. If it is broken or deformed, replace it.
3) Check if the MP empty sensor is connected correctly. If the harness is defective, replace it.
4) Check if the MP empty sensor is defective, if so replace it.
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