Charge Corona Power Pack - Ricoh FT4430 Service Manual

CHARGE CORONA POWER PACK

The circuit operation for the charge corona [A] begins with the input of +24
volts to the power pack at CN1-1. This power supply is used for the high
voltage coronas.
The charge corona turns on 0.42 second after the Start key is pressed. A
LOW signal from the main board (at CN206-A22) energizes the power pack.
The charge corona always turns on at the same time, but the off timing
depends on paper size.
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16April '88