Oki ES9160 Maintenance Manual page 351

6.8 Adjustment of High-Voltage Transformer
When replacing the high-voltage transformer, you must check each output adjustment of the main
charger bias, developer bias, transfer bias, transfer cleaning bias (positive), transfer cleaning bias
(negative) and separation bias.
6.8.1 Adjustment
[ 1 ] Preparation
Items to check Developer Bias
Process Unit Take the process unit out of the equipment, an then install the high-voltage transformer
jig to the unit.
High-Voltage Install the high-voltage transformer jig in the equipment.
Transformer Jig
Digital (+) terminal Connect with the
Tester black cable (thick
line) of the high-
voltage
transformer jig.
(–) terminal
Function
switch
Full-scale
(range)
Remarks Use a digital tester with an input resistance of 10 MΩ (RMS value) or higher.
How to turn ON Attach the door switch jig and start with the adjustment mode [05] while the front cover
the power opened.
Note
Connection for
developer bias
adjustment"
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Main Charger
Notes:
Connect the green cable of the high-voltage transformer jig to ground on the
equipment frame.
P. 6-44 "[A] Installation of the high-voltage transformer jig".
Connect with the
red cable (thick
line) of the high-
voltage
transformer jig.
Connect with the black cable (thin line) of the high-voltage transformer jig.
1000 V
P. 6-46 "[B] P. 6-46 "[C]
Connection for
main charger
adjustment"
6 - 43
Transfer Bias,
Transfer Cleaning
Bias(positive),
Transfer Cleaning
Bias(negative)
Connect with the red Connect with the
cable (thin line) of the gray cable of the
high-voltage high-voltage
transformer jig. transformer jig.
DC
20 V
P. 6-47 "[D]
Connection the transfer Connection for
bias, transfer cleaning separation
bias(positive) and charger
transfer cleaning adjustment"
bias(negative)
adjustment"
ES9160 MFP / ES9170 MFP
SETTING / ADJUSTMENT
Separation
Charger
P. 6-47 "[E]
6