SC Tables
D037/D038/D040/D041 4-20 SM Appendix
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
 Broken +24V fuse on PSU
 Defective BCU
1. Check the connection between the paper transfer unit and PSU.
2. Replace the paper transfer unit contact sensor.
3. Replace the paper transfer unit contact motor.
4. Replace the +24V fuse on the PSU.
5. Replace the BCU.
No. Type 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 HVPS-CB board
491 D
1. Check or replace the harness.
2. Replace the drum unit or paper transfer unit.
3. Replace the HVPS-CB board.
No. Type 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.
492 C
 High voltage leak
 Broken harness
 Defective image transfer belt unit or paper transfer unit
 Defective HVPS-TTS board
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