Lexmark CS737 User Manual page 198

Troubleshoot a problem
Action
Step 3
a
Remove the color imaging kit, and then remove the black
imaging unit.
Warning—Potential Damage: Do not expose the color
imaging kit and black 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 kit and black
imaging unit. Doing so may affect the quality of future print
jobs.
b
Insert the black imaging unit, and then insert the color imaging
kit.
c
Print the document.
Do horizontal dark lines appear on prints?
Vertical dark 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
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 dark lines appear on prints?
Yes No
Contact customer The problem is
support. solved.
Yes No
Go to step 2. The problem is
solved.
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