Lexmark 840 Printer User Manual


 
Solving print quality problems
100
Troubleshooting
Solving print quality problems
The information in the following table may help you solve print quality problems. If these suggestions still do not correct the
problem, call for service. You may have a printer part that requires adjustment or replacement.
Problem Action
Print is too light. The toner may be low.
Change the Toner Darkness setting in the Quality menu.
Change the Brightness setting in the Quality menu.
Change the Contrast setting in the Quality menu.
If you are printing on an uneven print surface, change the Paper Weight and Paper
Texture settings in the Paper menu.
Verify the correct print media is being used.
Toner smears or print comes
off the page.
If you are printing on an uneven print surface, change the Paper Weight and Paper
Texture settings in the Paper menu.
Verify the print media is within the printer specifications. See Understanding paper
and specialty media guidelines on page 35 for more details.
If the problem continues, contact the Lexmark Customer Support Center at
http://support.lexmark.com.
Toner appears on the back of
the printed page.
Toner is on the transfer roll. To help prevent this, do not load print media that is smaller
than the page size of the job to be printed.
Open and close the printer top front cover to run the printer setup cycle and clean the
transfer roll.
Toner fog or background
shading appears on the page.
Check the photoconductor kit to make sure it is installed correctly.
Replace the photoconductor kit.
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