COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4 IMAGE FORMATION SYSTEM4-97. Fluorescent Lamp AutomaticCorrection Control (ALVC control)The copier executes control (ALVC control) that automatically corrects the scanninglamp on voltage to make up for the change that otherwise could occur as a result ofdeterioration of the photosensitive drum.8. Fluorescent Lamp Protection MechanismIf the fluorescent lamp fails or flickers continuously after copying is started, themicroprocessor on the DC controller increases the application voltage to turn on thelamp properly.This, however, imposes an excessive voltage to the fluorescent lamp, speeding up itsdeterioration. To prevent such a problem, the DC controller turns off the power when anerror in the application voltage is detected on the composite power supply PCB.Reference:If the same problem occurs when the power is returned, the fluorescent lamp maybe faulty. Try replacing it.Warning:Do not execute operations that turn on the fluorescent lamp (coying, service mode)without installing the fluorescend lamp.
