Lexmark C912 Service Manual - Page 139

5055-xxx Problem Action Colored lines, streaks, or smudges appear on the printed page, or print appears blurred or unclear. Replace the photodevelopers. If the problem only occurs when printing black, replace just the black photodeveloper and fuser coating roll. If the problem occurs when printing one of the colors, replace all three of the color photodevelopers. If the problem remains, go to "Black line" on page 2-95. Toner specks appear on the page. Replace the oil coating roll. Toner colors the background of the page. Be sure the affected photodevelopers and toner cartridges are completely installed in the printer. The page has 100% coverage of Be sure the affected photodevelopers are one color. completely installed in the printer. Replace the photodevelopers. If the page is black, replace just the black photodeveloper. If the page is another color, replace all three of the color photodevelopers. If this does not fix the problem, go to "Black print" on page 2-95. Diagnostic information 2-89