U100 Adjusting Main High Voltage - Kyocera TASKalfa 250ci Service Manual

Maintenance
item No.
Adjusting main high voltage
U100
Description
Controls the charger roller voltage to optimize the surface potential.
Purpose
To change the setting value to adjust the image if an image failure (background blur, etc.) occurs.
Method
1. Press the start key.
2. Select an item and press the start key. The screen for executing each item is displayed.
Display
Adjust MC AC Bias
AC Auto Adjustment
Set DC1
Adjust DC2
Adjust DC2(B/W)
Set Charger Freq
Setting: [Adjust MC AC Bias]
Change the value using the +/- or numeric keys.
Increasing the setting makes the image darker; decreasing it makes the image lighter.
The values set vary depending on environments.
Display
MC AC Bias(C)
MC AC Bias(M)
MC AC Bias(Y)
MC AC Bias(K)
MC AC Bias(K)BW* Main charger AC bias for black in black/white mode 0 to 255
*: 50/40 ppm model only.
3. Press the start key. The value is set.
Setting: [AC Auto Adjustment]
1. Select ON or OFF.
Display
ON
OFF
Initial setting: ON
2. Press the start key. The setting is set.
Displaying: [Set DC1]
1. The current setting is diplayed.
Display
Bias1 C(Full)
Bias1 M(Full)
Bias1 Y(Full)
Bias1 K(Full)
Bias1 C(Half)
Bias1 M(Half)
Bias1 Y(Half)
Bias1 K(Half)
Bias1 K(B/W)
Description
Description
Main charger AC bias for each color
Setting the AC bias auto adjustment
Main charger DC bias for each color
Additional surface potential
Additional surface potential in black and white mode
Setting the main charger frequency
Description
Main charger AC bias for cyan
Main charger AC bias for magenta
Main charger AC bias for yellow
Main charger AC bias for black
Description
Turns auto adjustment ON
Turns auto adjustment OFF
Description
Main charger DC bias for cyan (full speed)
Main charger DC bias for magenta (full speed)
Main charger DC bias for yellow (full speed)
Main charger DC bias for black (full speed)
Main charger DC bias for cyan (half speed)
Main charger DC bias for magenta (half speed)
Main charger DC bias for yellow (half speed)
Main charger DC bias for black (half speed)
Main charger DC bias for black in black/white mode
2JZ/2JX/2JV/2H7-1
Setting Reference
range value
0 to 255 150
0 to 255 150
0 to 255 150
0 to 255 150
150
1-3-51