Action Yes No
Step 2
a Check if the printer is using a genuine and supported Lexmark
toner cartridge.
Note: If the toner cartridge is not supported, then install a
supported one.
b Print the document.
Do vertical dark streaks with missing images appear on prints?
Contact
customer
support.
The problem is
solved.
Repeating defects
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
Using the Print Quality Test Pages, check if the distance
between the repeating defects is equal to any of the following:
Imaging unit
• 75.40 mm (2.97 in.)
• 34.70 mm (1.37 in.)
• 23.9 mm (0.94 in.)
Toner cartridge
• 35.70 mm (1.41 in.)
• 36.80 mm (1.45 in.)
Transfer roller
• 44 mm (1.73 in.)
Fuser
• 78.1 mm (3.07 in.)
• 75.4 mm (2.97 in.)
Does the distance between the repeating defects match any of the
measurements?
Go to step 2. Take note of the
distance, and then
contact
customer
support.
Troubleshoot a problem 168
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