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.
For details about replacing the charge roller, cleaning unit for PCU and drum, see Replacement Guide.