Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-77
Samsung Electronics
 Code
H2-1752
 Error message
Finisher Failure: #H2-1752. Check fi nisher
 Symptom / Cause
Finisher compiles all the papers and moves them to stapling position and do nothing. the message “Stapler Safety
Fault” pops up.
Safety Switch Harness connection not well. Main Board damaged.
 Troubleshooting method
1. Check the Main Board Harness Connection.
2. Check the Safety Switch Harness Connection.
3. Check the Safety Unit’s operation. Check the
switch is clicked when the Safety Link moves.
4. Check the Safety Unit’s operation using Rear
Jogger. The same “switch ON/OFF” operation
should be followed.
5. Check the Safety Unit’s operation.
When Rear Jogger stands at the position having
the Shield and Rear Jogger met, the Safety
Switch should be ON.
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.