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Maintenance
item No.
U100
Checking the operation of main high voltage
Description
Performs main charging.
Purpose
To check main charging.
Start
Press the start key. The screen for selecting an item is displayed.
Display
MC ON
ON TIME(SEC)
Method
1. Select the item to be operated.
2. Press the start key. The selected operation starts.
3. To stop operation, press the stop/clear key.
Completion
Press the stop/clear key at the screen for selecting an item when main charger output stops. The screen for
selecting a maintenance item No. is displayed.
U101
Setting high voltages
Description
Changes the developing bias voltage and transfer voltage by changing the developing bias control voltage and
transfer control voltage.
Purpose
To check the developing bias and the transfer voltage or to take measures against drop of image density or
background fog.
Method
Press the start key. The screen for selecting an item is displayed.
Setting
1. Select the item to be set. The selected item is displayed in reverse.
2. Change the setting using the cursor up/down keys.
Display
DEV BIAS
DEV DUTY
DEV SBIAS
TC DATA
Increasing the DEV BIAS setting makes the image lighter; decreasing it makes the image darker.
Increasing the DEV DUTY setting makes the image lighter; decreasing it makes the image darker.
Increasing the DEV SBIAS setting makes the image darker; decreasing it makes the image lighter.
Increasing the TC DATA setting makes the transfer voltage higher, and decreasing it makes the voltage
lower.
3. Press the start key. The value is set.
Interrupt copy mode
While this maintenance item is being performed, copying from an original can be made in interrupt copy mode.
Completion
Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.
Description
Description
Turning the main charger on
Turning the main charger on and the laser scanner unit on and off
Description
Developing bias AC component frequency
at image formation
Developing bias AC component duty
at image formation
Developing shift bias potential
at image formation
Transfer control voltage
Setting range
Initial setting
-255 to 255
0
-100 to 100
0
-1 to 1
0
0 to 255
120
2BH/J-3
1-4-25
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