Question about Brother MFC 6800 All-In-One Laser Printer

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When printing their is a white vertical line through the entire page.I am using a Brothers MFC-6800 printer with a operation system Window XP professional.

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The first thing I would try is to fix the corona wire. Here is a link to Brother's website outlining the process (clean corona wire).
What you need to do is pull out the drum and look for a blue tab on the top of the cartridge. Slide that tab back and forth along the wire and see if that clears things up.
I have had some luck cleaning the drum when I get black streaks but I have also hear this can be dangerous and make the problem worse.

Posted on Mar 02, 2011

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B&w 6800 lots of horizontal black line areas. also, a vertical white strip about 3/4 inch wide about 3 inches from left side of paper


Hi!

the best thing is to make a copy using the glass and not the document feeder!If there is no lines on the copy simply lift up the cover and on the left side of the glass will be a thin strip of glass,Clean it with a dampened cloth and all line and marks should be gone1

Good Luck!

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Brother MFC-6800 1. Prints with 3/8" blank vertical line down the entire page; 2. Prints with a couple of 1/16" blank vertical lines down the entire page; 3. Prints with some gray shadow...


This solution is unconventional but it worked for me. The black roller on my MFC had irregularities on it and was creating horrible printouts. I pulled out the drum and cartridge and cleaned the large black roller. I used furniture polish to make the roller very smooth. Now it prints really nice.

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This unit has a brom tube unit and need to be replacement . By repair tec.

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The photosensitive drum needs to be cleaned or replaced. If after cleaning it the vertical line continues, the printer may need maintenance.

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1 Answer

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Vertical print problems are going to mean a drum replacement on that model. You can try to pull out the drum unit and carefully, with a lint free cloth, try spinning the drum and cleaning it off, but more than likely the coating on the drum has worn off where the vertical defect is. New part # dr-250 for that machine model..

Feb 28, 2009 | Brother MFC 6800 All-In-One Laser Printer

1 Answer

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Open te lid and look at the glass. You have dirt or white-out or something on the thin strip of glass to the left. Clean that glass!

Good luck!

Oct 07, 2008 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

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Under the drum there is a thin ****-glass. Make sure there is nothing on the glass. Do not use compressed air to remove the debris from the glass. Use a dust cloth or such. Using air will blow the debris into the laser unit and it will have to be taken apart to be cleaned.

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1 Answer

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hi
i have the same problem after replace the fuser
the problem is in the little board ,where all the connectors are on
the , 7812a , a positive voltage regulator ,was loose ,

only resoldering and ok..!

excuse my english, i write from el salvador , im really never speak english, but i just try to help
reggards..!

carlos c.

Apr 07, 2008 | Brother MFC 6800 All-In-One Laser Printer

1 Answer

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Have you changed out the drum? Sound like a drum problem

Feb 12, 2008 | Brother MFC 6800 All-In-One Laser Printer

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