Lexmark 4021 User Manual page 233

Troubleshooting
Uneven print density
Action
Step 1
a
Clean the charger and the printhead lens.
b
Resend the print job.
Is the print density uneven?
Step 2
Replace the photoconductor unit, and then resend the print job.
Is the print density uneven?
Vertical voids appear on prints
Leading edge
Trailing edge
Action
Step 1
a
Make sure your software program is using a correct fill pattern.
b
Resend the print job.
Do vertical voids appear on prints?
Step 2
a
From the control panel, set the paper type and weight in the
Paper menu to match the paper loaded in the tray.
b
Resend the print job.
Do vertical voids appear on prints?
Yes No
Go to step 2. The problem is
solved.
Contact customer The problem is
support. solved.
Yes No
Go to step 2. The problem is
solved.
Go to step 3. The problem is
solved.
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