Canon PC940 Service Manual - Page 179

CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS This chapter shows the machine's external parts, and explains the principles used for the machine's various control mechanisms in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. FANS 7-1 II. POWER SUPPLY SYSTEM .........7-3 A. Outline of the Power Supply System 7-3 B. Power Supply Circuit 7-4 C. Detecting an Error on the Composite Power Supply PCB 7-6 D. Protecting the Power Supply Circuit 7-6 III. DISASSEMBLY/ASSEMBLY ........7-7 A. External Covers 7-8 B. Control Panel 7-15 C. Copyboard Glass 7-16 D. Main Motor/Main Drive Assembly 7-17 E. Electrical System 7-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)