COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4 IMAGE FORMATION SYSTEM4-37C. Controlling the Drum MotorFigure 4-703The drum motor is a 2-phase stepping motor, and is controlled by the drum motordriver (IC210) to drive the intermediate transfer drum and the photosensitive drum.In response to a print sequence command from the D-CPU (IC202), the M-CPU(IC201) sends drum motor drive signals (DRMPHA, DRMPHA*, DRMPHB, DRMPHB*)to the drum motor driver (IC210).IC210 uses these signals to supply the motor with drive signals (DRMPHA, DRM-PHA*, DRMPHB, DRMPHB*), thereby rotating the intermediate transfer drum and thephotosensitive drum.In transparency mode and thick paper mode, the drum motor is rotated at low speed(1/4 for transparency mode, 1/3 for thick paper mode) to slow down the movement ofpaper through the fixing assembly.Drum motordriverDrum motorJ224-1DRMPHA*(IC210)517166+24UHDRMPHA*24UHM212181811-4-6-5-3DRMPHB*DRMPHADRMPHB44464543(IC201)D-CPU7DRMPHB*DRMPHBDRMPHA-224UHDC controller PCBDownload free service manual at http://printer1.blogspot.com
