Question about Brother MFC 7420 All-In-One Laser Printer

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Errror message clean corona wire

My brother MFC 7420 began issuing message to use cleaning wire. The copies were inking too. I used this wire without success. I cleaned all. Any suggestion. Need new drum? Thanks

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  • 52 Answers

Try this link http://www.brother-usa.com/ check out the FAQ and Troubleshooting

If you found any of this information helpful, please rate my solution. Thanks D. Lange

Posted on Apr 24, 2009

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2 Answers

Where do you find corona wires on Brother 7840W printer?


The wire is on the drum (where the toner cartridge fits in). The green or blue piece slide cleans the coroner wire.

Jul 23, 2014 | Brother MFC 7840W Printer

1 Answer

My Brother MFC-7420 Printer always prints black lines and splotches down the left side of my paper. This happens whether I'm scanning or printing from my PC. When I looked at my drum, it appears a


If you are seeing vertical streaks/black lines your primary corona wire is dirty and or the fax scanner may be dirty.
1)To clean the corona wire you take the drum unit and toner cartridge and place it on disposable paper to avoid spilling.
2) Clean the primary corona wire inside the drum unit by sliding the blue tab from right to left several times.
3) Return the blue tab and snap it into the home position.
4) Reinstall the drum unit and toner cartridge.
5) Close the front cover.
Caution: if you do not return the blue tab to the home position it may repeat the black lines.

Nov 29, 2012 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

My drum is dusty. How do I get the dust off?I have an brother mfc 7420


Dust on drum is an issue with the corona wire. Use the blue tab on top of the drum unit. Slide it back and forth 10+ times and this should correct your issue.

Jul 23, 2010 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

I feel like the drum needs cleaned. My copies all


On the drum try cleaning the corona wire by sliding the light blue slide left & right. if that does not work you might need a new drum. I have them for 50 bucks 805-520-3003

Jan 21, 2010 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Changed the toner now I am getting black copies?


It's important to gently shake toner cartridge from side to side to distribute the toner. It's also important to clean the corona wire (by sliding the tab from side to side) and the drum each time you change the toner cartridge. You should remove the toner cartridge (be careful, it can be messy), clean the corona wire and drum and your copies should return to normal.

Dec 07, 2009 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Where is the corona wire located


hi

check out the following link,
it shows the location of the corona wire near the drum unit and how you can clean it

http://welcome.solutions.brother.com/BSC/public/us/us/en/faq/faq/000000/000400/000035/faq000435_001.html?reg=us&c=us&lang=en&prod=mfc7420_all

thanks and regards

Jul 14, 2009 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

BROTHER MFC 7420 PRINTER SOLID VERTICAL LINE...


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

2 Answers

Brother MFC 7420,SAYS DUST ON DRUM,TRIED TO CLEAN BUT NO JOY


Dust on drum is an issue with the corona wire. Use the blue tab on top of the drum unit. Slide it back and forth 10+ times and this should correct your issue.

Good luck!

Aug 07, 2008 | Brother HL 1440 Laser Printer

1 Answer

Pls Clean Drum


The drum is the larger plastic unit that slides out an the toner cartridge fits into it. The corona wire is the very fine wire at the front top of the drum. Just slide the little cleaning tab back and forth.

Aug 03, 2008 | Brother MFC-8440 All-In-One Laser Printer

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