Lexmark MX931 MFP User Manual page 353

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Troubleshoot a problem
Vertical white lines
Note: Before solving the problem, print the Print Quality Test Pages. From the home screen, touch Settings >
Troubleshooting > Print Quality Test Pages.
Action
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?
Step 2
a
Depending on your operating system, specify the paper type
from the Printing Preferences or Print dialog.
Notes:
Make sure that the setting matches the paper loaded.
You can also change the setting on the printer control
panel. From the home screen, touch Settings > Paper >
Tray Configuration > Paper Size/Type.
b
Print the document.
Do vertical white lines appear on prints?
Vertical dark bands
Note: Before solving the problem, print the Print Quality Test Pages. From the home screen, touch Settings >
Troubleshooting > Print Quality Test Pages.
Yes
No
Go to step 2.
The problem is
solved.
Contact
customer
The problem is
support.
solved.
353

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