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No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
460 D
Separation power pack output error
An interrupt checks the status of the power pack every 20 ms. This SC
is issued if the BICU detects a short in the power pack 10 times at
D(ac).
 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. Reinstall or replace the image transfer belt unit or paper transfer unit.
3. Replace the high voltage supply unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
491 D
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.
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