Around The Drum - Ricoh A172 Service Manual

1.5 AROUND THE DRUM

SC302: Charge current leak
- Definition - [B]
A charge current leak signal is detected for more than 3 seconds.
- Possible causes -
•
Charge corona end block damaged
•
Charge corona receptacle damaged
•
High voltage supply board - C/G defective
SC303: Wire cleaner motor error
- Definition - [B]
Over current signal is detected for more than 10 seconds, when the wire
cleaner motor rotates.
- Possible causes -
•
Wire cleaner motor defective
•
Wire cleaner drive board defective
•
Wire cleaner pad unit not properly positioned
SC380: Drum potential sensor calibration error
- Definition - [D]
When performing the process control self-check, the drum potential
sensor is not calibrated properly. The previous settings are used in this
case. If there are no previous settings, the defaults are used.
- Possible causes -
•
Drum potential sensor defective
•
Interface board 1 defective
•
Main control board defective
•
High voltage supply board - B defective
SC381: Charge potential abnormal
- Definition - [D]
When performing the process control self-check, the charge potential of
the drum is not in the proper range.
- Possible causes -
•
High voltage supply board- C/G defective
•
Main control board defective
A172/A199 6-12 SM