COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)This chapter provides descriptions on the machine’s laser exposure operations, func-tions of each operation, relationships between electrical and mechanical systems, andtiming at which each associated part is turned on.CHAPTER 3LASER EXPOSURE SYSTEMI. OUTLINE..................................................3-1II. LASER CONTROL CIRCUIT ...................3-3A. Outline................................................3-3B. Image Signal Processing ...................3-5C. Controlling the Laser Intensity ...........3-6D. Horizontal Sync Control .....................3-7E. Controlling the Laser DiodeEmission ............................................3-8III. LASER SCANNER MOTOR.....................3-9A. Controlling the Laser ScannerMotor ..................................................3-9IV. FAULT IN THE LASER SCANNER ........3-11V. DISASSEMBLY/ASSEMBLY ..................3-12A. Printer Unit External Covers ............3-13B. Door Switch Actuator .......................3-22C. Laser/Scanner Assembly .................3-25Download free service manual at http://printer1.blogspot.com
