CHAPTER 2
the discharger bias switch signal (/DCHGUP) turns “H” the low output bias changes to “L” and the circuit applies a high voltage output bias. The high voltage output bias is applied only at the trailing edge of a single side print and during the second side of a duplex print.
e.Toner sensing/cartridge sensing The
The DC controller detects the toner level and whether a cartridge is installed when the devel- oping AC bias is applied to the developing cylinder by the DEVELOPING AC BIAS DRIVE signal by checking the TONER LEVEL signal (TONSNS) voltage.
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