Ricoh D037 Service Manual page 442

SC Tables
No. Type
1.
2.
3.
4.
5.
No. Type
High voltage power: Drum/ development bias output error
An error signal is detected for 0.2 seconds when charging the drum or
development.
491 D
1.
2.
3.
No. Type
492 C 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.
D037/D038/D040/D041
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Broken +24V fuse on PSU
Defective BCU
Check the connection between the paper transfer unit and PSU.
Replace the paper transfer unit contact sensor.
Replace the paper transfer unit contact motor.
Replace the +24V fuse on the PSU.
Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage leak
Broken harness
Defective drum unit or development unit
Defective HVPS-CB board
Check or replace the harness.
Replace the drum unit or paper transfer unit.
Replace the HVPS-CB board.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage leak
Broken harness
Defective image transfer belt unit or paper transfer unit
Defective HVPS-TTS board
4-20 SM Appendix