CHAPTER 4 IMAGE FORMATION SYSTEMCOPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-39Figure 4-308[1]C. Blank Exposure1. Removing the Blanking ExposureUnit1) Set the machine to the maximum ratio(141%) as follows:• Turn on the power, and select a defaultratio of 141%.• Press the Copy Start key.• When the lens has moved to the farthestleft, turn off the power.• Disconnect the power plug.2) Remove the front lower cover.(See Chapter 7.III.A.2. “Removing theFront Lower Cover.”)3) Remove the drum unit.(See A.2. “Removing the Drum unit.”)4) Remove the DC controller PCB.(See Chapter 7.III.E.1. “Removing the DCcontroller PCB.”)5) Remove the composite power supplyPCB.(See Chapter 7.III.E.2. “Removing theComposite Power Supply PCB.”)6) Remove the two screws [1].7) Remove the developing assembly.(See D.2. “Removing the Developing As-sembly.”)
