COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)2. Inputs to and Outputs from the Duplexing Driver PCBCHAPTER 2 BASIC OPERATION2-13Duplexing driver PCBWhen the sensor detects paper, '0'.DUPPS*+5VHREGS+5VWhen the sensor detects paper, '0'.SWBKS*+5VDRPS+5VJ20-3-1-2-3J2008-1-2-3J2006-1-2-3J2007-1-2-6J2007-4-5PS24PS25PS26PS23+24VAM8SL7SWBADSWBANDSWBBDSWBBNDPRRESLD*J2004-1-2-3-4-1 When '0', the reversing roller isreleased.J2009-2SL6 DUPSLD*-1 When '0', paper enters the duplexingunit.J2002-2+24VAJ2003-2-1 DUPCLD* When '0', the duplexing feedingroller rotates.CL5M7HRGCOMAHRGCOMBHRGADHRGANDHRGBDHRGBNDJ2005-1-2-3-4-5-6+24VAJ21-3-1-2J22-3-1-2J23-3-1-2Horizontalregistrationguide homeposition sensorReversal papersensorDuplexing papersensorDuplexingfeeder roller 1home positionsensorReversingroller releasingsolenoidDuplexingflapper solenoidDuplexingfeeding clutchDuplexing motorHorizontalregistrationmotorWhen the sensor detects that thehorizontal registration guide is atthe home position, '1'.When the sensor detects that theduplexing feeding roller 1 is atthe home position, '1'.Duplexing motor rotationcontrol signalHorizontal registration motorrotation control signalFigure 2-113Download free service manual at http://printer1.blogspot.com