Develop ineo 3301P User Manual page 183

Toner fog or background shading appears on prints
Action
Step 1
Reinstall the imaging unit.
1. Remove, and then install the imaging unit.
2. Resend the print job.
Does fog or shading appear on prints?
Step 2
Replace the imaging unit, and then resend the print job.
Does fog or shading appear on prints?
Toner rubs off
User's Guide
Yes
Go to step 2.
Contact technical support.
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No
The problem is solved.
The problem is solved.