3–44OPERATIONS AND TIMINGCOPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)F. Controlling the Static Elimi-nator Bias1. OutlineFigure 3-307 show the circuit that controls thestatic eliminator bias, and the circuit has the followingfunctions:• Turns ON/OFF the static eliminator bias andcontrols it to a constant voltage.• Switches the static eliminator bias voltagelevel.Figure 3-307Composite power supply PCBJLVCTL JCTLMicroprocessorJ5J307Q301MicroprocessorStatic eliminatorbias drivecircuitT424VTransformercircuitDC controller PCBPhotosensitivedrumStaticeliminatorDownload service manual and resetter printer at http://printer1.blogspot.com
