Action Yes No
Step 3
a Load paper from a fresh package.
Note: Paper absorbs moisture due to high humidity. Store
paper in its original wrapper until you use it.
b Resend the print job.
Do horizontal dark lines still appear on prints?
Go to step 4. The problem is
solved.
Step 4
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.
Do horizontal dark lines still appear on prints?
Contact
customer
support.
The problem is
solved.
Horizontal white lines
Leading edge
Trailing edge
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 paper type
and weight from the Printing Preferences or 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 white lines still appear on prints?
Go to step 2. The problem is
solved.
Troubleshooting 80
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