Vertical dark bands
Note: Before solving the problem, print the Print Quality Test Pages. From the home screen, touch Settings >
Troubleshooting > Print Quality Test Pages.
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 vertical dark bands appear on prints?
Go to step 2. The problem is
solved.
Step 2
a Remove the toner cartridge, and then remove the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit
to direct light for more than 10 minutes. Extended exposure
to light may cause print quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum under the imaging unit. Doing so may
aect the quality of future print jobs.
b Insert the imaging unit, and then insert the cartridge.
c Print the document.
Do vertical dark bands appear on prints?
Go to step 3. The problem is
solved.
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