Samsung ML-651x series Service Manual page 176

6. Check the Jam Cover Sensor Harness
connection.
Service Manual
ML-551x / 651x series
4. Alignment and Troubleshooting
7. Check the Jam Cover fl ag damaged
8. If the same problem happens after checking 1~7,
Replace the Finisher main board.
9. If the same problem happens after checking 8,
replace the Finisher harnesses.
4-81
Samsung Electronics