38 ï EnglishHorizontal Dark StreaksThere are black lines that appearhorizontally on the page.ï The drum cartridge may bedefective or at the end of its life.ï The paper path may becontaminated with toner.ï The fuser may be defective.Repetitive Vertical DarkStreaksThere are black lines that appearvertically on the page.ï The paper path may becontaminated with toner.ï The drum cartridge may bedefective or at the end of its life.ï The fuser may be defective.ï The transfer roller may bedefective.TroubleshootingPrint Problems (cont.)
