SOURCE: sc491 error on ricoh MPC 3500
Sc 491 straight from manual
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.
SOURCE: Error Message for Ricoh CL 3500:
Welcome to Fixya
SC441 error means that one or more of the developer unit(PCU) is malfuntioning or not rotating. Take out the PCU out to see which color is not rotating. There maybe one of the doctor blade is flipped, usually caused by lack of toner in the PCU.
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