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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
• 96 mm (3.78 in.)
• 37.7 mm (1.48 in.)
Toner cartridge
• 43.5 mm (1.71 in.)
• 37.5 mm (1.48 in.)
Transfer roller
• 52 mm (2.05 in.)
Fuser
• 79.8 mm (3.14 in.)
• 62.5 mm (2.46 in.)
Does the distance between the repeating defects match the toner
cartridge or imaging unit measurements?
Go to step 2.
Note: If the
repeating defects
match the transfer
roller or fuser
measurements, then
contact
customer
support.
Take note of the
distance, and then
contact
customer
support.
Troubleshoot a problem 176
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