COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)G. Variable Resistors (VR), Light-Emitting Diodes, and CheckPins PCBOf those VRs, LEDs, and check pins used in the copier, those needed in the field arediscussed.1. Video Interface PCBFigure 10-507CHAPTER 10 TROUBLESHOOTING10-79Do not touch the VRs and check pinsnot discussed herein. They are for thefactory only and require special toolsand high accuracy.Caution:1. Some LEDs emit dim light evenwhen they are off. It is a normalcondition, and must be kept inmind.2. VRs that may be used in thefield …VRs that must not be used in thefield …Caution:A1B1C1A32B32C32J2104J2111B20A1A50 A1B1B50A20B1J2101Download free service manual at http://printer1.blogspot.com
