Action Yes No
Step 1
a Check if the printer is using a genuine and supported Lexmark
toner cartridge.
Note: If the cartridge is not supported, then install a
supported one.
b Print the document.
Do horizontal light bands appear on prints?
Go to step 2. The problem is
solved.
Step 2
a Remove, and then insert the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit
to direct light. Extended exposure to light may cause print
quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum. Doing so may aect the quality of
future print jobs.
b Print the document.
Do horizontal light bands appear on prints?
Go to step 3. The problem is
solved.
Step 3
a Replace the imaging unit.
b Print the document.
Do horizontal light bands appear on prints?
Go to step 4. The problem is
solved.
Step 4
a Turn o the printer, wait for 10 seconds, and then turn on the
printer.
b Print the document.
Do horizontal light bands appear on prints?
Contact
customer
support.
The problem is
solved.
Vertical light bands
Note: Before solving the problem, print the Print Quality Test Pages. From the home screen, touch Settings >
Troubleshooting > Print Quality Test Pages.
Troubleshoot a problem 145
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