90 SuperScript 4600N — User’s GuideBlack LineA fine black line appearing in the printed image may indicatethat the Belt Cartridge surface is damaged or that there isdebris stuck in the Belt Cartridge area.Solutions• Clean or replace the Belt Cartridge if it is damaged or hasreached the end of its expected life.• If problem persists call a service representative.Vertical LineA vertical line of any color appearing in the printed imagemay indicate that there is debris on or near the transfer drum.Solutions• Clean inside the back of the printer especially the PaperDischarger (see page 78).Image Staggered VerticallyA printed image that staggers or repeats vertically mayindicate that the printer was bumped or vibrating duringprinting. It may also indicate that the optical unit has failed.Solutions• Ensure that the printer was not bumped during printingand that the surface it is placed on is not shaky orwobbly.• Call a service representative to check the printer, if youcannot identify a cause.Horizontal BandingHorizontal banding in the image may indicate a transferfailure.Solutions• Check Toner Modules.• Replace the Belt Cartridge if it is getting to the end of itslife.• If problem persists call a service representative.Horizontal White BandA white band appears horizontally in the print image.Solution• Call a service representative to check the printer.Toner SpotsToner spots or stains on the paper may be caused by tonerdropping inside the printer.Solutions• Clean the Belt Cartridge (see page 76).• Call a service representative to check the printer.Mixed Color ImageIf a mixed color image appears on the page it may indicate aproblem with a Toner Module.Solutions• Confirm that all Toner Modules are inserted correctly.• Make sure that the Front Cover is completely closed.• Replace or redistribute Toner Modules if low.