AACCTTIIOONN YYEESS NNOO1 Remove the color imaging kit,and then remove the blackimaging unit.WWaarrnniinngg——PPootteennttiiaall DDaammaaggee::Do not expose thecolor imaging kit andblack imaging unit todirect light for morethan 10 minutes.Extended exposure tolight may cause printquality problems.WWaarrnniinngg:: Do nottouch thephotoconductor drumunder the colorimaging kit and blackimaging unit. Doingso may affect thequality of future printjobs.2 Insert the black imaging unit,and then insert the colorimaging kit.3 Print the document.Is the print density uneven?Contact Contacting CustomerSupportThe problem is solved.Horizontal Dark Lines• Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to SSeettttiinnggss >>TTrroouubblleesshhoooottiinngg >> PPrriinntt QQuuaalliittyy TTeesstt PPaaggeess. For non-touch-screen printer models, press OOKK to navigatethrough the settings.• If horizontal dark lines keep appearing on the prints, then see the “Repeating defects” topic.208 Xerox® C410 Color Printer User GuideTroubleshooting