Savin 4027 Service Manual download pdf (Page 233)

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1.9 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.

A156/A160/A162 6-14 FSM

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Savin 4027 Service Manual Page 233

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