Kyocera FS-920 - Page 62

2GL/2FV/2FW
1-5-20
(5) Black horizontal streaks. Causes
1. Defective drum unit’s ground.
2. Defective drum unit
Causes Check procedures/corrective measures
1. Defective drum unit’s ground. The drum axle in the drum unit and its counter part, the grounding tab in
the printer, must be in a good contact. If necessary, apply a small amount
of electro-conductive grease onto the tab.
2. Defective drum unit. Replace the drum unit. See page 1-6-7.
(6) Black vertical streaks. Causes
1. Contaminated main charger wire.
2. Defective drum surface.
3. Defective magnet roller (in the developer unit).
Causes Check procedures/corrective measures
1. Contaminated main charger wire. Clean the main charger wire by sliding the green colored cleaning knob in
and out several times.
2. Defective drum surface. A streak of toner remaining on drum after printing means that the cleaning
blade (in the drum unit) is not working properly. Replace the drum unit.
See page 1-6-7.
3. Defective magnet roller (in the developer
unit).
Replace the developer. See page 1-6-6.
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