Image Quality Problem - Konica Minolta bizhub C360 Service Manual

23. IMAGE QUALITY PROBLEM

23. IMAGE QUALITY PROBLEM
23.1 How to read element data
2.1
• As part of troubleshooting procedures, the numeric values set for "State Confirmation"
available from "Service Mode" can be used to isolate the cause of the image problem.
23.1.1 Table number
Vdc-C • Shows the developing bias value of each color of toner when an image is produced.
Vdc-M • Standard values: around 400 V (200 V to 800 V)
Vdc-Y • A correction is made to make the image lighter when the numeric value is greater.
Vdc-K • A correction is made to make the image darker when the numeric value is smaller.
• Relevant components: Developing unit, drum unit, high voltage unit (HV)
Vg-C • Shows the grid voltage value of each color of toner when an image is produced.
Vg-M • Standard values: around 500 V (200 V to 800 V)
Vg-Y • A correction is made to make the image lighter when the numeric value is greater.
Vg-K • A correction is made to make the image darker when the numeric value is smaller.
• Relevant components: Developing unit, drum unit, high voltage unit (HV)
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2.1
Field Service Ver. 2.1 Feb. 2012
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