Solving print quality problemsNote: Refer to the print defects guide at the end of the manual for repeating defects.Print quality problemsProblem Cause / actionLight or blurredcharacters. Light printSee “Light print” on page 2-33.The toner cartridge may be getting low on toner:• Remove the toner cartridge and print cartridge assembly.• Shake it from side to side to redistribute the toner.• Reinstall it, and recheck for condition.• Make sure to use the recommended print media (see media types and sizes in theUser’s Guide).• Use MarkVision™ Professional to define the custom type setting for media type, mediatexture, or media weight.• The toner cartridge or PC Kit may be defective. Replace the PC Kit first, and recheck.Blurred charactersBlurred images, including characters, are usually caused by a defective printhead.Vertical white linesSee “Vertical streaks" below.Vertical white lines may be caused by the laser beam, which may be partially blocked. Withthe printer off, clear the path or clean the lens. The toner cartridge or fuser may bedefective. Try a different toner cartridge. Inspect the fuser at its entry for debris.Toner smudgesappear on the front orback of the page.• Make sure the media is straight and unwrinkled.• Replace the PC Kit, and recheck before replacing the toner cartridge. See “Toner onback of page” on page 2-33 for more information.Vertical or horizontalstreaks appear on thepageVertical streaksSomething could be caught between the PC kit and the fuser. Check the paper path aroundthe fuser entry. Try a different toner cartridge.Vertical white lines may be caused by the laser beam, which may be partially blocked. Withthe printer off, clear the path or clean the lens. The toner cartridge or fuser may bedefective. Try a different toner cartridge. Inspect the fuser at its entry for debris.Horizontal streaksThe toner cartridge or the fuser may be the cause due to excessive page count or defect.Replace as needed.If the lines are parallel and match the two intended ghost images, then the Form Type maybe incorrectly set. Check those settings.The PC cleaner sump may be full. Replace the PC kit.2-34
