Lexmark CS730 Users Guide - Page 186
Vertical dark lines
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Troubleshoot a problem 186 Action Yes Step 3 a Remove the color imaging kit, and then remove the black imaging unit. Contact customer support. 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. No The problem is solved. 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 Yes Step 1 Go to step 2. 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. No The problem is solved. Do vertical dark lines appear on prints?