My brother mfc6800 is printing a black page - Brother MFC 6800 All-In-One Laser Printer

SOURCE: Black smudges in printing (Brother HL1240 )

I had the same problem at work, what i did is clean the Drum unit corona wire with paper towel cause the moving the blue lever alone doesn't clean it properly.

Emma J

• 53 Answers
• Posted on Dec 03, 2008

SOURCE: Black pages

Take a look here at the possible causes

http://www.printertechs.com/tech/print-defects/blackpages.php

Hope this helps

Remember to vote

good luck

SOURCE: brother MFC-7420 prints black pages

The drum is defective. The cleaning blade has failed.

SOURCE: Brother printer prints solid black on one side

This is caused by a faulty drum/charging circuit or laser unit. The drum is positively charged with static electricity and a laser draws the image onto the drum (changing the charge to negative) the toner is positively charged to it will adhere to the negatively charged image which is now on the drum. your problem is that the drum is either not being positively charged or the laser is charging the whole drum. There is a corona wire on the drum, remove the drum, sweep the corona wire (there will be a tab that moves left and right) and try it again. next step is to replace the drum. if you dont have a spare drum or one from another printer then it may be more cost effective to buy another printer as drums are quite expensive and it may not even be the problem.

SOURCE: black dots on printed page from Brother 9440 color laser printer

The problem lies with the black toner cartridge. This is a common problem in these machines due to poor design by Brother. Best solution is to replace the offending color toner cartridge.