Question about Brother MFC-7820N Laser Printer

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My brother 7820n is making black copies. Can you help?

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Toss it.

Posted on Jan 06, 2009

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Accordion pleated paper jams brother 7820n at back of priter


There are small black rollers just where the paper exits the machine. These become hard & shiny. Scrub them with green scouring pad moistened with an alcohol based cleaning fluid then dry them off. If they are now black & tacky your problem should be solved.

Oct 23, 2010 | Brother MFC-7820N Laser Printer

1 Answer

Prints a black streak whether I copy, or print, not dirty glass on Brother 7820N


Try cleaning the corona wire of the drum unit.

You need to open the front cover of the machine and remove the cartridge (drum and toner) On the top right there is a tab that you need to slide from left to right about 20 times, then bring back to home position

Apr 10, 2010 | Brother MFC-7820N Laser Printer

1 Answer

Dirty prints


The problem is with drum.
If have your manual consult it and clean the drum with a clean cloth and white ethanol.
Any other help I will be happy to help you.

Jan 28, 2010 | Brother MFC-7820N Printer

1 Answer

Brother 7820N has black vertical line when using ADF


It's the same scanner ccd, after you make sure the narrow scanner window is clean, you need to power down the machine and power up again so it will calibrate to a clean window, if it has a scratch like from a staple, you will need a new glass.

Jan 18, 2010 | Brother MFC-7820N Printer

1 Answer

I have just replaced the drum in a brother MFC-7820N, now all I am printing is solid black pages, can you help me please?


Sounds like a defective drum, the corona wire could be broken, Brother will warranty for 90 days and you can exchange, if it's generic you should take it back and exchange it.

Sep 10, 2009 | Brother MFC-7820N Printer

3 Answers

Vertical black line in scan document not in copies through document feeder


Lift the lid and to the left of the main glass is a smaller glass; that is what scans during the feeding process. Make sure that it is completely clean; even a speck of dust can cause a line to appear. I took a lens wipe and cleaned mine and my line was gone.

Jun 01, 2009 | Brother MFC-7820N All-In-One Laser Printer

1 Answer

Black stripe down middle of page when copying


open the top cover on the left hand side glass plateform with a narrow piece glass clean it with alcohol.

Dec 13, 2008 | Brother MFC-7820N Printer

1 Answer

Black Line in the middle of the page.


open the adf and you will see small glass, on the glass is a spec of dirt or most proberly tipex, clean the glass and line will disapear

Apr 01, 2008 | Brother MFC-7820N Laser Printer

1 Answer

Scanner


Check smaller slit glass panel near copy top glass (open lid on left for liquid paper / dirt.

Oct 30, 2007 | Brother MFC-7820N Printer

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