Lexmark 4021 User Manual page 221

Troubleshooting
Action
Step 3
a
Depending on your operating system, specify the paper type
and weight in Printing Preferences or in the Print dialog.
b
Resend the print job.
Do print irregularities still appear?
Step 4
Check if the paper loaded in the tray has texture or rough finishes.
Are you printing on textured or rough paper?
Step 5
a
Load paper from a fresh package.
Note: Paper absorbs moisture due to high humidity. Store
paper in its original wrapper until you use it.
b
Resend the print job.
Do print irregularities still appear?
Step 6
a
Clean the charger and the printhead lens.
b
Resend the print job.
Do print irregularities still appear?
Step 7
Replace the photoconductor unit, and then resend the print job.
Warning—Potential Damage: Do not expose the
photoconductor unit to direct light for more than 10 minutes.
Extended exposure to light can cause print quality problems.
Do print irregularities still appear?
Print is too dark
Yes No
Go to step 4. The problem is
solved.
From the control Go to step 5.
panel, set the paper
texture in the Paper
menu to match the
paper loaded in the
tray.
Go to step 6. The problem is
solved.
Go to step 7. The problem is
solved.
Contact customer The problem is
support or your solved.
service
representative.
221