Vertical Black Bands - Ricoh A151 Field Service Manual

1.4 VERTICAL BLACK BANDS

- Problem -
Vertical black bands appear on the copy.
- Possible Causes -
1. Dirty optics
2. Dust between the cleaning blade and drum
3. Edge of the cleaning blade deformed
4. Deformed inlet seal on the development unit
- Action -
Do the black bands shift when a reduction copy is made?
No Yes
Check and clean the optics section. After cleaning the optics perform
the necessary SP modes in order (SP95, 48, and 56).
Press the blade release lever down two or three times to clean the edge of
the cleaning blade. If black bands still appear, go to the next step.
Is the edge of the cleaning blade deformed?
No Yes
Replace the cleaning blade.
If the inlet seal on the development unit is deformed, replace the inlet seal
plate and the seal as a set.
A151/A152 6-8 FSM