2) Circumferential scars on the photosensitive drum
Action:
Replace the cartridge.
3) Defective developing cylinder
Action:
Replace the cartridge.
4) Foreign materials are deposited on the laser outlet of the printer or the laser inlet of the car-
tridge.
Action:
Remove the foreign materials.
5) Toner adhered to the face-down deliver sub-roller or fixing delivery sub-roller
Action:
Clean the face-down delivery sub-roller or fixing delivery sub-roller.
6) Dirt or foreign materials on the fixing unit entrance guide.
Action:
Clean the fixing unit entrance guide.
7) Foreign materials on the fixing film unit
Action:
Replace the fixing film unit.
8) Dirty mirror in the laser/scanner unit
Action:
Replace the laser/scanner unit.
II-9.
Black horizontal lines
<Possible causes>
1) Horizontal scar(s) on the photosensitive drum
Action:
Replace the cartridge.
2) Dirty, deformed or worn fixing film
Action:
Replace the fixing film unit.
II-10. White horizontal lines
<Possible causes>
1) Horizontal scar(s) on the photosensitive drum
Action:
Replace the cartridge.
2) Defective fixing film unit
Action:
Replace the fixing film unit.
II-11. Blank spots
<Possible causes>
1) Lack of toner
Action:
Remove the cartridge from the printer. Rock the cartridge in the way described on
page 1-9 Chapter 1, and then install it back to the printer. If the problem still
remains, replace the cartridge.
CHAPTER 4
4 - 9
