CHAPTER 7EXTERNALS/AUXILIARY MECHANISMSI. POWER SUPPLY ...............................7-1A. Outline ...........................................7-1B. Power Supply Circuit Assembly.....7-2C. Detecting Errors in the PowerSupply PCB ...................................7-4D. Protection Mechanisms for thePower Supply Circuit .....................7-5II. DISASSEMBLY AND ASSEMBLY ......7-6A. External Covers .............................7-6B. Control Panel.................................7-9C. Fans...............................................7-10D. Main Motor/Main Drive Assembly..7-11E. Cassette unit .................................7-14F. DC Controller PCB ........................7-17G. Composite Power Supply PCB......7-18H. AE Sensor PCB.............................7-21I. Intensity Sensor PCB ....................7-21This chapter shows the copier’s external parts, and explains the principles used for the copier’svarious control mechanisms in view of the functions of electrical and mechanical units and in relationto their timing of operation. It also shows how these units may be disassembled/assembled andadjusted.COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
