9. The copy has black lines (vertical, fine).CHAPTER 11 TROUBLESHOOTING11-73COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CauseCopyboardglassPhotosensitivedrum cleanerassemblyPhotosensitivedrumDevelopingsystem,ExposuresystemFixing assemblyChecksDese the problem occur only instream reading mode?Press the Copy Start key, and turnoff the power switch when copypaper is in the feeding assembly.At this time, does the copy beforemoving through the fixingassembly have black lines?Is paper or foreign matter trappedon the cleaning blade of thecleaner assembly?Are there scratches on thecleaning blade? (Feel the edge ofthe cleaning blade with a finger tofind out.)Are there scratches or black lineson the surface of thephotosensitive drum in theperipheral direction?Are there scratches or black lineson the surface of the fixingassembly upper roller in theperipheral direction?Step123456YES/NOYESNOYESYESYESNOYESNOActionCheck the copyboardglass for dirt andscratches at the pointwhere the scanner isfixed in position instream reading mode.Go to step 6.Remove the foreign mat-ter, and clean the clean-ing blade and the out-side of the cleanerassembly.Switch to the new side(edge). If both edgeshave scratches, find outthe cause.Replace the photosensi-tive drum. If scratchesare found, find out thecause.Check the developingsystem and the expo-sure system.1. Replace the upperroller.2. Check the take-upmechanism for thecleaning belt.3. Check the reciprocat-ing mechanism of thethermistor and theseparation claw.Check the inlet of the fix-ing assembly for dirt.
