Action Yes No
Step 2
a Remove, and then reinstall the imaging unit or imaging kit.
Warning—Potential Damage: Do not expose the imaging unit
or imaging kit to direct light for more than 10 minutes.
Extended exposure to light may cause print quality problems.
Warning—Potential Damage: To avoid damage, do not touch
the underside of the imaging unit or imaging kit.
b Resend the print job.
Does gray background still appear on prints?
Contact
customer
support.
The problem is
solved.
Horizontal dark lines
ABCDE
ABCDE
ABCDE
Note: If horizontal dark lines keep appearing on your prints, then see the “Repeating defects” topic.
Action Yes No
Step 1
a Depending on your operating system, specify the tray or feeder
from the Printing Preferences or Print dialog.
b Resend the print job.
Do horizontal dark lines still appear on prints?
Go to step 2. The problem is
solved.
Step 2
a Depending on your operating system, specify the paper type
and weight from the Printing Preferences or from Print dialog.
Notes:
• Make sure that the settings match the paper loaded in
the tray.
• You can also change the settings on the printer control
panel.
b Resend the print job.
Do horizontal dark lines still appear on prints?
Go to step 3. The problem is
solved.
Troubleshooting 79
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