Lexmark MS415 - Troubleshooting; Toner specks appear on prints; Toner fog or background shading appears on prints

Toner specks appear on prints
Action Yes No
Replace the imaging unit, and then resend the print job.
Do toner specks appear on prints?
Contact
customer
support.
The problem is solved.
Toner fog or background shading appears on prints
ABCDE
ABCDE
ABCDE
Action Yes No
Step 1
Reinstall the imaging unit.
a Remove, and then install the imaging unit.
b Resend the print job.
Does fog or shading appear on prints?
Go to step 2. The problem is solved.
Step 2
Replace the imaging unit, and then resend the print job.
Does fog or shading appear on prints?
Contact
customer
support at
http://support.lexmar
k.com or your service
representative.
The problem is solved.
Toner rubs off
Leading edge
Trailing edge
ABC
DEF
Troubleshooting 201