CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
4-14
3.7 The copy is foggy (vertical).
3.8 The copy has a black line (vertical, fuzzy, thick).
Primary charging roller
1) Clean the charging roller in user mode. Is the problem corrected?
YES: End.
Scanner
2) Clean the mirrors and lenses. Is the problem corrected?
YES: End.
Developing assembly
3) Is the coating of toner on the developing cylinder even?
NO:
1.
Check the edge of the blade of the developing assembly.
2.
Dry wipe the surface of the developing cylinder.
Photosensitive drum, External light
4) Is there a scratch in the peripheral direction on the surface of the photo-
sensitive drum?
YES: Replace the drum unit.
NO:
Check to see if the photosensitive drum is subjected to light from
outside.
