COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)Figure 4-202Reference:E810: absence of the drum cartridge.CHAPTER 4 IMAGE FORMATION SYSTEM4-7DC controller PCBDrum cartridgeDrum cartridge memoryMDO1MDI1MSK1MSC1OPCSNSMDO1: drum cartridge memory data output signalMDI1 : drum cartridge memory data input signalMSK1: drum cartridge memory serial lock signalMSC1: cartridge memory select signalOPCSNS: drum cartridge detection signalIf you have replaced the drum cartridge, be sure to execute auto gradation correctioncontrol in user mode.Caution:Download free service manual at http://printer1.blogspot.com
