Lexmark CS921 User Manual page 105

Troubleshooting
Horizontal white lines
Leading edge
Trailing edge
Notes:
•
Before solving the problem, print the print quality test pages. From the home screen, touch Settings >
Troubleshooting > Print Quality Test Pages.
•
If horizontal dark lines keep appearing on your prints, then see the "Repeating defects" topic.
Action
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
Print the document.
Do horizontal white lines still appear on prints?
Step 2
a
Load the specified tray or feeder with the recommended paper
type.
b
Print the document.
Do horizontal white lines still appear on prints?
Step 3
a
Inspect the test pages to determine which color is affected.
b
Remove, and then reinstall the photoconductor unit.
Warning—Potential Damage: Do not expose the
photoconductor unit to direct light for more than one minute.
Extended exposure to light can cause print quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum. Doing so may affect the quality of
future print jobs.
c
Print the document.
Do horizontal white lines still appear on prints?
Yes No
Go to step 2. The problem is
solved.
Go to step 3. The problem is
solved.
Go to step 4. The problem is
solved.
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