Image Quality Problem; How To Read Element Date - Konica Minolta bizhub C250 Service Manual

18. Image quality problem

18. Image quality problem

18.1 How to read Element date

• 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.
18.1.1 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
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: Imaging Unit, High Voltage Unit (Developing Bias)
Vg-C • Shows the grid voltage value of each color of toner when an image is produced.
Vg-M • Standard values: Around 500 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: Imaging Unit, High Voltage Unit (Developing Bias)
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Field Service Ver. 1.0 Jul. 2005
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