Samsung ML-451 Series Service Manual page 158

4. Alignment and Troubleshooting
► Error Code
H2-1101
► Error message
Jam front of Finisher
► Symptom
Paper jam in IOT. Or Finisher Diverter operation not well. Or IOT Deflector Damaged. Or Finisher Entrance Sensor not
working (Finisher Entrance Sensor Damaged, Harness connection not well, Main Board damaged)
► Troubleshooting method
1) Check Jam Occurrence in IOT.
2) Check IOT Deflector part's operation.
3) Check the Main Board Harness Connection.
4) Check Finisher's Entrance operation & harness connection.
5) Referring to H2-1800, Check the Finisher Diverter operation.
6) If the same problem happens after checking 1~5, Replace the Finisher main board.
7) If the same problem happens after checking 6, replace the Finisher harnesses.
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