Service manual

4. Alignment and Troubleshooting

Service Manual

ML-551x / 651x series

4-79

Samsung Electronics

 Code

H2-1800

 Error message

Finisher Failure: #H2-1800. Check ﬁ nisher

 Symptom / Cause

Diverter is not working.

Diverter Motor, Sensor Harness Connection not well or damaged. Main Board Damaged. IOT’s Deﬂ ector

damaged.

 Troubleshooting method

1. Check the Main Board Harness Connection.

2. Check the IOT’s Deﬂ ector operation.

3. Check Diverter sensor harness connection.

4. Diverter Motor Harness Connection and

operation.

5. Check if Diverter Unit is not contaminated.

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.