Auto Density Control On/Off (Error Check Level) (No.aa); Compensation Of Target Density (No.ab); Minimum Voltage Gap Between Sp And Bias (No.ac) - KIP 9000 Service Manual

(21) Auto Density Control ON/OFF (error check level) (No.AA)

Auto Density Control can be set to any of OFF, ON1 and ON2.
Setting value Description
OFF Auto Density Control is not performed.
ON1 Auto Density Control is performed with normal error check level.
ON2 Auto Density Control is performed with strict error check level.
NOTE
Service Mode 5-AA is the same setting with User Mode E. When the Auto Density Control is
set to OFF, it may be possible to avoid machine down caused by the service call error E-28.
Neither Service Mode 5-AA nor User Mode E has setting priority.

(22) Compensation of Target Density (No.Ab)

Target Density can be compensated if necessary. The setting unit is hexadecimal, and the setting
range is 00 to FF. Increment of the setting value makes the Target Density darker.

(23) Minimum voltage gap between SP and Bias (No.AC)

When the Auto Density Control tries to adjust the density several times, the Developer Bias may
be so much increased that the voltage gap between Surface Potential and Developer Bias may
become so small. This situation may result in very light image as enough amount of toner can not
move onto the Drum at development because of small voltage gap. To avoid such situation, it is
possible to specify a minimum voltage gap. The setting stands for "-X volts against the Surface
Potential", and the setting range is from 0 to 250V in 1V increment.
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