F. Potential Sensor Assembly1. Removing the Potential Sensor Assembly1) Remove the blanking potential lamp assembly from the copier. (See p. 4-44.)Keep in mind that the potential sensor assembly is an integrated part of theblanking exposure lamp assembly.G. Primary Charging Assembly1. Removing the Primary Charging Assembly1) Open the front door, and open the hopper assembly.2) Loosen the mounting screw q, and slide the fixing member w upward; then, fix thefixing member in place.3) Disconnect the connector e, and remove the primary charging assembly r.Figure 4-315After installing the primary charging assembly, execute ‘wire cleaning’ in usermode. (You need not perform this step if the surface temperature of the upper fixingroller is 100°C or less, since wire cleaning will be executed automatically.)qwerCOPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4 IMAGE FORMATION SYSTEM4-48Caution:Caution:Download service manual and resetter printer at http://printer1.blogspot.com