SC Tables
D023/D025 3-24 SM Appendix
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Toner transport motor error
The LOCK signal is not detected for 2 seconds when the transport
motor turns on.
Toner transport motor overload
Disconnected or broken harness
Defective toner transport motor
Opened +24V fuse on the PSU
Defective interlock switch
490 D
1. Check or replace the harness.
2. Replace the toner transport motor.
3. Replace the +24V fuse on the PSU.
4. Replace the interlock switch.
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 high voltage supply unit
491 D
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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