Question about Office Equipment & Supplies
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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
Video might not help but this problem is due to the charge spring arching on the back of pcu, suggested fix eould be to restore spring to its original condition and add conductive grease to the charge plate on tge rear of the pcu. Hope it helps
Posted on May 03, 2013
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