2KR/2KS
1-3-45
U100
Setting the main high voltage
Description
Performs main charging.
Purpose
To check main charging.
Method
1. Press the start key.
2. Select the item to be operated.
3. Press the start key. The selected operation starts.
4. To stop operation, press the stop key.
Completion
Press the stop key when main charger output stops. The screen for selecting a maintenance item No. is dis-
played.
U101
Setting the other high voltages
Description
Sets the developing bias control voltage, the transfer control voltage, and the separation control voltage or
checks the output of these voltages.
Purpose
To check the developing bias, the transfer voltage and the separation voltage or to take measures against
drop of image density or background fog.
Setting
1. Press the start key.
2. Select the item to be set.
3. Change the setting using the +/- or numeric keys.
Increasing the DEV BIAS setting makes the image darker; decreasing it makes the image lighter.
Increasing the DEV SBIAS setting makes the image darker.
Increasing the DEV DUTY setting makes the image lighter; decreasing it makes the image darker.
Increasing the TC DATA setting makes the transfer voltage higher, and decreasing it makes the voltage
lower.
Increasing the SC DATA setting makes the separation voltage higher, and decreasing it makes the volt-
age lower.
4. Press the start key. The value is set.
Completion
Press the stop key. The screen for selecting a maintenance item No. is displayed.
Maintenance
item No.
Description
Display
Description
MC
Turning the main charger on
LASER
Turning the main charger on and the laser scanner unit on and off
Display
Description
Setting range
Initial setting
DEV BIAS
Developing bias AC component frequency
at image formation
20 to 32
28
DEV SBIAS
Developing shift bias potential at image
formation
0 to 3
1
DEV DUTY
Developing bias AC component duty at
image formation
0 to 100
50
TC DATA
Transfer control voltage
0 to 300
130
SC DATA
Separation control voltage
0 to 60
20
Содержание TASKalfa 420i
Страница 1: ...SERVICE MANUAL Published in May 2010 842KS113 2KSSM063 Rev 3 TASKalfa 420i TASKalfa 520i ...
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Страница 371: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Страница 381: ...INSTALLATION GUIDE FOR 3000 SHEETS PAPER FEEDER ...
Страница 436: ...INSTALLATION GUIDE FOR CENTER FOLDING UNIT ...
Страница 450: ...INSTALLATION GUIDE FOR MAILBOX ...
Страница 458: ...INSTALLATION GUIDE FOR HOLE PUNCH UNIT ...
Страница 470: ...INSTALLATION GUIDE FOR BUILT IN FINISHER ...
Страница 483: ...INSTALLATION GUIDE FOR JOB SEPARATOR ...
Страница 491: ...INSTALLATION GUIDE FOR FAX System ...
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