Question about Ricoh CL4000DN Laser Printer
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Posted on Jan 02, 2017
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
High voltage leak
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.
Posted on Feb 26, 2010
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