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ADJUSTMENT
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3.6 Adjustment of the Process unit Related Section
3.6.1 High-Voltage Transformer Setting
The high-voltage transformers (PS-HVT-450) supply high-voltage to the parts related to charging,
development, transfer and Discharging blade.
The high-voltage transformer has the following high-voltage outputs.
Never move the variable resistance on the board since the output adjustment has been
performed at the shipment for the high-voltage transformer supplied as a service part. Also do
not perform the setting change when the high-voltage power supply is replaced.
CH1 1 Main charger needle (Y)
2 Main charger needle (M)
3 Main charger needle (C)
4 Main charger needle (K)
CH2 1 Main charger grid bias (Y)
2 Main charger grid bias (M)
3 Main charger grid bias (C)
4 Main charger grid bias (K)
CH3 1 Developer bias (Y)
2 Developer bias (M)
3 Developer bias (C)
4 Developer bias (K)
CH4 1 1st transfer roller bias (Y)
2 1st transfer roller bias (M)
3 1st transfer roller bias (C)
4 1st transfer roller bias (K)
CH5 - 2nd transfer roller bias
CH6 1 Recovery blade bias (Y)
2 Recovery blade bias (M)
3 Recovery blade bias (C)
4 Recovery blade bias (K)
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