To identify the affected color, print three full-page, solid-fill A3 or DLT sheets for each of white and black, and three full-page, halftone A3 or DLT sheets for each of cyan, magenta, and yellow.
Detach the charge roller of the affected color and check its surface. Is the surface stained?
Yes |
Wipe the charge roller with a dry rag to remove the stain. If the stain cannot be removed, replace the charge roller. Go to the next step. |
No |
Go to the next step. |
Detach the photoconductor unit of the affected color and check the drum surface. Is the surface stained or scratched?
Stained: |
Replace the cleaning unit for PCU. |
Scratched: |
Replace the drum. |
Neither: |
Contact your service representative. |
If the problem persists even if you replace the cleaning unit for PCU or drum, contact your service representative.
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For details about replacing the charge roller, cleaning unit for PCU and drum, see Replacement Guide.