2. 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.
3. 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.
4. 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.
Colored Streaks (2)
Extended, blurred colored streaks parallel to the paper feed direction appear. The streaks also appear
randomly in the margins.
Cause:
If the temperature or humidity is low, remaining toner might be missed by the cleaning blade of the
cleaning unit for intermediate transfer belt or transfer unit, causing streaks to appear sporadically.
3. Troubleshooting Image Quality Problems
20