Lexmark 25B2010 - Page 257

Action Yes No
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 light bands appear on prints?
Contact
customer
support.
The problem is
solved.
Vertical white lines
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.
Do vertical white lines appear on prints?
Go to step 2. The problem is
solved.
Step 2
Fix slow printing problems. For more information, see
“Slow
printing” on page 265.
Do vertical white lines appear on prints?
Go to step 3. The problem is
solved.
Step 3
a Replace the imaging unit.
b Print the document.
Do vertical white lines appear on prints?
Contact
customer
support.
The problem is
solved.
Troubleshooting 257