Cause:
• The charger is stained.
• The cleaning unit for PCU has worn out.
• The drum surface is scratched.
Solution:
1. Detach the charger and check its surface. Is the surface stained?
Yes Contact your service representative.
No Go to the next step.
2. Detach the photoconductor unit 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.
3. If the problem persists even though you have replaced the cleaning unit for PCU or drum,
contact your service representative.
• For details about replacing the charger, cleaning unit for PCU and drum, see Replacement Guide.
3. Troubleshooting Image Quality Problems
18
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