Service manual

4. Alignment and Troubleshooting

Service Manual

ML-551x / 651x series

4-67

Samsung Electronics

 Code

H2-1100

 Error message

Paper jam inside of ﬁ nisher. Remove paper

 Symptom / Cause

Finisher Entrance sensor actuator does not return after a paper covers it

IOT Exit Roller grabs the paper. Or Finisher Feeding Motors Stopped. Or Finisher Entrance 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 Entrance operation & harness

connection.

4. Check Finisher Feeding Entrance Motor Harness

Connection and operation.

5. Check Finisher Feeding Exit Motor Harness

Connection and operation.

6. If the same problem happens after checking 1~5,

Replace the Finisher main board.

7. If the same problem happens after checking 5,

replace the Finisher harnesses.