B. Protection Mechanisms of the Power Supply CircuitThe DC power supply PCB is equipped with an overcurrent protection circuit and anover voltage protection circuit.If an error, and as a result a short circuit, occurs in any of the loads, the protectioncircuits will turn on to cut off the output of power.The protection circuits can be reset by depriving the DC power supply PCB of ACpower for 1 min or more (by disconnecting the power plug). Be sure to remove the causeof activation before turning on the power switch once again.Repeated short circuiting and recovering of a load can cause the built-in fuse tomelt.CHAPTER 7 CONTROLS AND EXTERNALSCOPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON) 7-5Note:
