Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-56
Samsung Electronics
 Code
C3-1512
C3-1514
 Error message
Imaging unit is not compatible. Check guide
Imaging unit is not compatible. Check guide
 Symptom / Cause
The imaging unit is not compatible.
 Troubleshooting method
1. Check information of the imaging unit.
2. If the imaging unit is not a Samsung genuine imaging unit, replace with new one.
 Code
C5-1510
 Error message
 Symptom / Cause
The imaging unit does not get the normal high voltage.
1. The imaging unit is not installed properly.
2. The contact between the machine and the imaging unit is bad.
3. The imaging unit is defective.
 Troubleshooting method
1. Remove the imaging unit. Check if the contact terminal is contaminated.
Reinstall the imaging unit. And turn the machine off then on.
Print 10 sample pages for test.
2. If the problem persists, replace the imaging unit.
3. If the problem persists after removing the imaging unit, replace the HVPS board or the engine board.