Samsung ML-451 Series Service Manual page 160

4. Alignment and Troubleshooting
► Error Code
H2–1200
H2–1300
► Error message
Jam inside Finisher
Jam exit of Finisher
► Symptom
IOT Exit Roller grabs the paper. Or Finisher Feeding Motors Stopped. Or Finisher Exit Sensor damaged or harness
damaged. Or Finisher Main Board damaged
► Troubleshooting method
1) Check Jam Occurrence in IOT. If the IOT roller is grabbing the paper, it's IOT fault.
2) Check the Main Board Harness connection.
3) Check Finisher Exit Sensor operation & harness connection.
4) Check Finisher Feeding Entrance Motor harness connection and operation.
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