Action Yes No
Step 3
a Remove, and then insert the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit
to direct light for more than 10 minutes. Extended exposure
to light may cause print quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum under the imaging unit. Doing so may
aect the quality of future print jobs.
b Print the document.
Do horizontal white lines appear on prints?
Go to step 4. The problem is
solved.
Step 4
Replace the imaging unit, and then print the document.
Do horizontal white lines appear on prints?
Contact
customer
support.
The problem is
solved.
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 Yes No
Step 1
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 in
the tray.
• 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?
Go to step 2. The problem is
solved.
Troubleshooting 249