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I replaced the drum on my mfc-7820N brother copier and I am still having the same smudges. I cleaned the corona and glass, etc. I have gently cleaned the drum with alcohol and it stays clean for a few copies, then the smudges comes back. What's happening?

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First of all. Never clean your drum. It has a cleaning mechanism built into it (as most all do), and if it is not being cleaned properly itself, then cleaning it yourself will only do 1 of 2 things, damage it beyond repair, or nothing at all. Secondly, as long as you have replaced the drum with a BRAND NEW unit as you say, then it could be a problem toner cartridge, but that's only likely if it is rebuilt vs. an original. If neither of these fixes the problem, then you have a worn fuser, and that's a costly repair.

Posted on Jun 15, 2009

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We've tried 2 new toners in the Brother 7820n and still get the same error...Change Drum Soon. We've turned it off, slid the blue arrow to clean the drum wires, etc....it still won't work...please advise....


Open front cover where drum/toner goes in
Press "Options" key on control panel
LCD will display "Replace Drum 1. Yes 2. No"
Press 1 to reset drum
Close front cover

Nov 09, 2010 | Brother MFC-7820N All-In-One Laser Printer

1 Answer

My brother printer/copier/scanner/fax machine is printing with a vertical line down each copy. What can I do to fix that?


check that the corona cleaner on drum unit is locked on correct side, if still line, check scanner glass, left side, see if white out is on glass, or some type of smudge on glass

Sep 22, 2010 | Brother MFC-8870DW 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

Drum Error on Brother MFC 7840W


Has two situations:
  1. The corona wire on the drum unit needs to be cleaned.Clean the corona wire on the drum unit.
  2. The drum unit has reached the end of its life. Replace the drum unit.

Feb 15, 2010 | Brother MFC 7840W Printer

1 Answer

Show drum error on display screen


That means either the drum count has been reached and you need a new drum, or you just need to take the drum out and run that little blue tab back and forth about 20 times to clean the corona wire. It helps after that to blow out the corona area with canned air.

Jan 13, 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

1 Answer

How to clean MFC 8820 corona wire of drum


simple solution for cleaning any corona wires Use a lead pencil eraser Gently clean the corona wire, with light even strokes, Best solution (recommended to me by my Copier tech teacher)

Jul 09, 2009 | Brother MFC-8220 Fax

2 Answers

Same problem even with new Brother drum


Did you replace the drum or the toner cart? The drum has a blue lever that you slide back and forth around 20 times to clean the corona wire. I sometimes use a cotton swab with alcohol to gently clean this wire as well.

Jun 23, 2009 | Brother MFC 8500 All-In-One Laser Printer

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