Brother International MFC-9700 Users Manual - English - Page 192
Routine Maintenance, Cleaning the Drum, Dark Stripes or Toner, Stains, White Spots, Scattering Toner - change drum soon
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DIFFICULTY Printed pages are stained corona with toner or have vertical stripes. Dark Stripes or Toner Stains Printed pages have white spots in black text and graphic areas. White Spots Toner scatters and stains the printed page. Scattering Toner The whole page is printed black. Black Page SUGGESTIONS Clean the MFC's interior and the primary wire of the drum unit. (See Routine Maintenance and Cleaning the Drum Unit, on pages 21-16 and 21-18.) 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 LCD shows CHANGE DRUM SOON, replace the drum unit with a new one. Make sure that you use paper that meets the specifications. Rough surface or thick media can cause the problem. If you still see white spots and the LCD shows CHANGE DRUM SOON, replace the drum unit with a new one. Check the MFC's environment; conditions such as high humidity may cause this situation to occur. Adjust the print conditions in the Print Density setting. Remove the drum unit and clean the MFC's interior. (See Routine Maintenance and Cleaning the Drum Unit, on pages 21-16 and 21-18.) Make sure that you use paper that meets specifications. (See page 2-5.) If you still have scattered toner and the LCD shows CHANGE DRUM SOON, replace the drum unit with a new one. Check the MFC's environment; high temperature and high humidity may cause this condition to occur. Clean the MFC's interior and the primary corona wire of the drum unit. (See page 21-18.) Also, do not use heat sensitive paper as it will cause this problem. After cleaning, if the printed pages are still black or the LCD shows CHANGE DRUM SOON, replace the drum unit with a new one. The drum unit may be damaged. 21 - 11 T R O U B L E S H O O T I N G A N D R O U T I N E M A I N T E N A N C E