COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)A. SensorsFigure 10-501CHAPTER 10 TROUBLESHOOTING10-70PS1207PS19PS17PS3PS1901CPS1201PS1204PS1203PS1208PS1202PS30 PS11PS5PS1801PS1PS29PS1302PS1301PS18PS1902PS1903PS1206PS1205PS10PS1802Download free service manual at http://printer1.blogspot.com