Ricoh SP C420DN-KP Support Question
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Question posted by bluerib on June 17th, 2011
Error Sc 491 Functional Problem How Do I Fix This Problem
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Current Answers
Answer #1: Posted by p33mp33ui on June 17th, 2011 9:22 AM
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.
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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