6. The copy is foggy. (overall)CHAPTER 11 TROUBLESHOOTING11-71COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CauseLIGHT_5ScannerCleanerassemblyPre-exposurelamp, DCcontroller PCBDeveloping rollDevelopingcylinderLamp regulatorPotential controlsystemDC controllerPCBHigh-voltagetransformer,DevelopingassemblyChecksPerform the Image AdjustmentBasic Procedure. Is the problemcorrected?Clean the scanning lamp,reflecting plate, side reflectingplate, mirror, lens, dust-proofingglass, and heat absorbing glass.Is the problem corrected?Is the cleaning blade installedcorrectly?Is the pre-exposure lamp flashingduring copying?Are the developing rolls worn?Replace the developing cylinder.Is the problem corrected?Replace the lamp regulator. Is theproblem corrected?Make the checks on p. 11-42. Isthe potential sensor normal?Set the meter to the 30VDCrange, and measure the voltagebetween J114-A2 (DCBC) andJ114-A13 (GND) on the DCcontroller PCB.Step123456789YES/NOYESYESNONOYESYESYESYESNOYESActionEnd.End.Install the cleaningblade.1. Replace the pre-exposure lamp.2. Replace the DCcontroller PCB.Replace the developingrolls.Replace the developingcylinder.End.Replace the DCcontroller PCB.Replace the DCcontroller PCB.1. Check the wiring fromthe DC controller PCBand the high-voltagetransformer; if normal,replace the high-voltage transformer.2. Check the developingassembly.
