Bias Circuit - Ricoh M5 Service Manual

7. Bias Circuit

The above diagram shows
The dc power supply board supplies +22 volts to CN714-1 of the transfer/bias power pack. The
de/de converter changes this input to the high voltage used for development bias.
The bias trigger (CN101-7) is LOW active.
pressed and stays on until 1 second after the transfer corona turns off.
bias control circuit in
the
The development bias is applied when the Start key is
3 - 3 9
block form.
May, 25, 1985