Action Yes No
Step 1
a Check if the printer is using a genuine and supported 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 154.
Do vertical white lines appear on prints?
Contact your
dealer. The problem is
solved.
Vertical dark bands
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
a Check if the printer is using a genuine and supported toner
cartridge.
Note: If the toner cartridge is not supported, then install a
supported one.
b Print the document.
Do vertical dark bands appear on prints?
Contact your
dealer. The problem is
solved.
Troubleshoot a problem 170
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