Executive Series 2426 Printer Family User’s GuideTroubleshooting • 540Print Quality ProblemsStripes: WhiteThe stripes appear in the same direction as the paper was printed(moved through the printer).Stripes: BlackThe stripes appear in the same direction as the paper was printed(moved through the printer).Possible cause RemedyLED head is dirty. Clean LED head with lens cleaner or soft tissue.See “Cleaning the LED heads” on page 517.Toner is low. Change toner cartridge.See “Changing the Toner Cartridge” on page 498.Image drumdamaged.Change image drum.See “Changing the Image Drum” on page 505.Possible cause RemedyImage drum isdamaged.Replace image drum.“Changing the Image Drum” on page 505.Toner is low. Change toner cartridge.See “Changing the Toner Cartridge” on page 498.Periodic black laterallines or spots.• If the lines or spots occur at intervals of approximately44 - 94 mm, the image drum (green tube) is damagedor dirty.If damaged, replace the image drum cartridge.If dirty, wipe the image drum gently with softtissue. If this does not work, replace the imagedrum.• If the lines or spots occur at intervals of approximately113 mm, the fuser roller is damaged. Change thefuser unit.See “Changing the Fuser” on page 514.The image drum hasbeen exposed to light.Remove the image drum from the printer and store it ina dark place for several hours. If this does not work,replace the image drum.