Samsung ML-651x series Service Manual page 171

● Code
H2-1A70
H2-1750
H2-1751
H2-1753
● Symptom / Cause
Stapler is not working well.
Stapler Harness Connection not well. Or Cartridge set sensors damaged, Or Main Board damaged.
● Troubleshooting method
NOTE - Make sure that the staple strips on top of
the stack are complete and fl at. Remove any partial
strips and any strips that are bent.
1. Check the Main Board Harness Connection.
2. Check the Stapler harness connection.
Service Manual
ML-551x / 651x series
4. Alignment and Troubleshooting
● Error message
Finisher Failure: #H2-1A70. Check fi nisher
Finisher Failure: #H2-1750. Check fi nisher
Finisher Failure: #H2-1751. Check fi nisher
Finisher Failure: #H2-1753. Check fi nisher
3. Check if staples are stuck in Stapler Head area
4. If the same problem happens after checking 1~3,
5. If the same problem happens after checking 4,
6. If the same problem happens after checking 5,
4-76
and damage of Stapler itself.
Replace the Finisher main board.
Replace the Finisher Stapler.
Replace the Finisher harnesses.
Samsung Electronics