How To Fix And Solve Error Code SC491-00 || RICOH MP C2011 ERROR CODE-SC 491-00 || Ricoh SC 491-00

Sir Please Check Step BY Step

1- Open The All PCDU
2- Black, Cyan, Magenta, Yellow PCDU
3- Check Drum Unit (Parts)
4- Replace The Drum Step By Step (Black, Cyan, Magenta, Yellow)

Description:
High voltage power source: charge/development: output error SC detection signal (charge/development) is L (abnormal) for 200 ms consecutively during high voltage (charge/development) output.
Causes:
H/W error • Output contact setting fault • Controller connector set fault • Ground fault of output high voltage path • Surface/air clearance insufficient (arc discharge) • Controller harness disconnection, short-circuit • PCU setting fault • Control board _IOB error (related signal error) • HVP_CB error Load error • Grounding fault of charging output, short-circuit with other outputs • Surface/air clearance insufficient in charging output path (including distance from other outputs) • Abnormal deterioration of drum, and over current due to pinholes • Drum vs charge roller gap error (PCU error). • Over current due to drum surface condensation • Grounding fault of developing output, short-circuit with other outputs • Surface/air clearance insufficient in developing output path (including distance from other outputs) • Other
Remedy:
• Cycle the main power off/on • Reset or replace the harness of high voltage power supply feed path • Reset or replace the harness between IOB-HVP_CB • Reset or replace the PCU • Check the operation of the contact mechanism • Replace the HVP_CB • Replace the IOB





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