CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCOPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)7-243. Points to Note When Handling theComposite Power Supply PCB1) Some capacitors on the composite powersupply hold charges when the machine’spower supply is off.Take extra care never to short the termi-nals of the capacitor whenever you haveremoved the composite power supplyPCB.2) When handling the PCB, hold its heat ra-diating plate (at the center) or its bothedges. In particular, keep in mind thatholding the area indicated by “ ” cancause deformation or cracking of theboard.Figure 7-331