3.8 VERTICAL WHITE LINES OR BANDS—2 (THIN, DISTINCT)
- Problem -
Vertical white lines appear on the copy.
- Possible Causes -
1. Dirty or deteriorated drum charge roller
2. Paper dust on the edge of the cleaning blade
3. Scratched drum
4. Scratched hot roller
- Action -
Is the drum charge roller dirty?
No Yes
Clean the drum charge roller with a dry cloth.
Press the cleaning blade release lever several times. Make a copy and if white
lines still appear, go to the next step.
Make a copy and stop the machine when the paper reaches the transport sec-
tion. Do white lines appear on the copy?
No Yes
Replace the drum if it is scratched.
Replace the hot roller if it is scratched.
NOTE: If the drum is scratched, find out what caused the scratches on the drum
and correct the problem. It could be any of the following.
• Paper misfeed
• Incorrect positioning of the pick-off pawls
• Foreign substances on the cleaning blade
• Carrier leakage
FSM 6-13 FT5535/4527/4522
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