Ricoh FT5535 Service Manual page 201

3.9 HORIZONTAL BLACK/WHITE LINES
- Problem -
Black or white lines perpendicular to the paper feed
direction appear on the copy image.
- Possible Causes -
1. The drum is scratched.
If black/white lines appear at 188.4 mm (7.42") intervals, the cause is a
scratched drum or toner build-up.
2. The drum charge roller is scratched.
If black/white lines appear at 43.9 mm (1.73") intervals, the cause is a
scratched drum charge roller.
3. The hot roller is scratched.
If black lines appear at 125.6 mm (4.94") intervals, the cause is a scratched
hot roller.
4. Toner adheres to the drum surface.
Due to insufficient cleaning, foreign matter may accumulate on the blade,
causing toner to stick to the drum surface when the drum stops.
- Action -
Is the drum scratched?
No Yes
Replace the drum.
Is the drum charge roller scratched ?
No Yes
Replace the drum charge roller.
Is the hot roller scratched?
No Yes
Replace the hot roller.
If toner adheres to the drum surface, clean the drum with wet cotton. Also clean
or replace the cleaning blade.
FT5535/4527/4522 6-14 FSM