Vertical Black (color) Streaks (1)
Black (color) streaks parallel to the paper feed direction appear.
Cause:
This may occur if:
• The charge roller is stained.
• The PCU cleaning unit has worn out.
• The drum surface is scratched.
• If the rollers, ribs, or tabs in the paper path are stained with toner
Solution:
(a) Checking the charge roller
1. Print a full-page, solid-fill A3 or SRA3 sheet for white with the "Independent Pattern 2dot"
setting.
2. Do streaks appear?
Yes Finished!
No Go to the next step.
3. Check the charge roller. Is there a stain on the surface of the charge roller that
corresponds to the position of the streaks that appeared on the paper?
Yes Go to the next step.
No Proceed to "(b) Checking the Photoconductor unit".
4. Wipe the charge roller with a well-wrung-out damp cloth.
5. Image Quality Problem: Lines
50
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