Action Yes No
Step 7
a Remove, and then insert 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 Print the document.
Is the print dark?
Go to step 8. The problem is
solved.
Step 8
a Replace the imaging unit.
b Print the document.
Is the print dark?
Contact
customer
support.
The problem is
solved.
Fine lines are not printed correctly
Note: Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to
Settings > Troubleshooting > Print Quality Test Pages. For non‑touch‑screen printer models, press
to
navigate through the settings.
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.
Are fine lines not printed correctly?
Go to step 2. The problem is
solved.
Troubleshooting 128