Vertical dark lines or streaks
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 lines or streaks appear on prints?
Contact your
dealer. The problem is
solved.
Vertical dark streaks with print missing
Contact your dealer.
Repeating defects
Contact your dealer.
Troubleshoot a problem 171
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