Ricoh AP-P2 G188 Field Service Manual page 304

3. Appendix: Service Call Conditions
No. Type
491 D
3
No. Type
492 D
46
Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage power: Drum/ development bias output error
An error signal is detected for 0.2 seconds when charging the drum or development.
• High voltage leak
• Broken harness
• Defective drum unit or development unit
• Defective high voltage supply unit
1. Check or replace the harness.
2. Replace the drum unit or paper transfer unit.
3. Replace the high voltage supply unit.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage power: Image transfer/ paper transfer bias output error
An error signal is detected for 0.2 seconds when charging the separation, image
transfer bet or paper transfer roller.
• High voltage leak
• Broken harness
• Defective image transfer belt unit or paper transfer unit
• Defective high voltage supply unit
1. Check or replace the harness.
2. Replace the image transfer belt unit or paper transfer unit.
3. Replace the high voltage supply unit.