Lexmark 4021 User Manual page 217

Troubleshooting
Gray background on prints
Leading edge
ABCDE
ABCDE
ABCDE
Trailing edge
Action
Step 1
a
From the Quality menu on the control panel, decrease the toner
darkness.
b
Resend the print job.
Did the gray background disappear from the prints?
Step 2
a
Remove, and then reinstall the photoconductor unit and the
toner cartridge.
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.
b
Resend the print job.
Did the gray background disappear from the prints?
Step 3
a
Clean the charger and the printhead lens.
b
Resend the print job.
Did the gray background disappear from the prints?
Step 4
Replace the photoconductor unit, and then resend the print job.
Did the gray background disappear from the prints?
Horizontal voids appear on prints
Leading edge
Trailing edge
Yes No
The problem is Go to step 2.
solved.
The problem is Go to step 3.
solved.
The problem is Go to step 4.
solved.
The problem is Contact
solved. support.
217
customer