Olivetti d-COPIA 3500MF, Service Manual

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2LL/2LJ/2LH
1-3-66
U100 Adjusting main high voltage
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.
Setting: [Adj AC Bias]
1. Change the value using the +/- or numeric keys.
Increasing the setting makes the image lighter; decreasing it makes the image darker.
The values set vary depending on environments.
2. Press the start key. The value is set.
Setting: [Set AC Auto Adj]
1. Select On or Off.
Initial setting: On
2. Press the start key. The setting is set.
Displaying: [Set DC Bias]
1. The current setting is displayed.
Item No. Description
Display Description
Adj AC Bias Main charger AC bias for each color
Set AC Auto Adj Setting the AC bias auto adjustment
Set DC Bias Main charger DC bias for each color
Adj DC Bias Additional surface potential
Set Low Temp Pre-charge time at power supply ON
Set Charger Freq Setting the main charger frequency
Chk Current Rush current display
Display Description Setting range
AC Bias(K) Main charger AC bias 0 to 255
Display Description
On Turns auto adjustment ON
Off Turns auto adjustment OFF
Display Description
DC1 Bias(K) Main charger DC bias (full speed)
DC1 Bias Half(K) Main charger DC bias (half speed)
Service Manual Y113350-5