Laser Exposure System - Canon CP660 Service Manual

LASER EXPOSURE SYSTEM

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