Brother International MFC 9180 Owners Manual - Page 132
Cleaning the Drum Unit, Setting the Print Density
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DIFFICULTY SUGGESTIONS Printed pages are stained with Clean the machine's interior and the primary corona wire of drum toner or have vertical stripes. unit. (See Regular Maintenance, page 128 and Cleaning the Drum Unit, page 130.) Make sure that the tab of the corona wire is at the home position. If after cleaning, you still see dark stripes or toner stains and the display shows CHANGE DRUM SOON, replace the Dark Stripes or Toner Stains drum unit with a new one. Printed pages have white spots in black text and graphic areas. Make sure that you use paper that meets the specifications. (See Acceptable Paper, page 64.) Rough surface or thick media can cause the problem. If you still see white spots and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. White Spots Toner scatters and stains the printed page. Scattering Toner Adjust the print conditions by setting the Print Density function. (See Setting the Print Density, page 30.) Clean the machine's interior. (See Regular Maintenance, page 128 and Cleaning the Drum Unit, page 130.) Make sure that you use paper that meets specifications. (See Acceptable Paper, page 64.) If you still have scattered toner and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. The whole page is printed black. Black Page Wipe the electric terminals. (See Regular Maintenance, page 128 and Cleaning the Drum Unit, page 130.) Also, do not use heatsensitive paper as it will cause this problem. After cleaning, if the printed pages are still black and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. Nothing is printed on the page. Make sure that the toner cartridge is not empty. If the toner cartridge is empty, replace the toner cartridge. (See Replacing the Toner Cartridge, page 131.) White page Printed pages are marked regular intervals. Markings may disappear by themselves. Try copying at multiple pages to clear this problem. Markings may occur if the machine has not been used for a long time. A possible cause is that the surface of the drum is marked or damaged by excessive exposure to light. In this case, replace the drum unit with a new one. Example of Regular Marking 124 Chapter 18