Question about Brother MFC 420CN All-In-One InkJet Printer

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Cleaning corona wire

I have done the cleaning procedure in the manual but is not helping

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There is no corona wire in this machine.

Posted on Jun 07, 2008


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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

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How can fix this code C-2105 in konica minolta bizhup 600

C - 2105 Transfer/separation corona cleaning motor home sensor error code.
Remove the transfer/separator corona located in ADU assy,use the vacuum cleaner and clean the corona support and the 2 sensors(located under corona assy rear and front area).After cleaning urn ON the copier and is working.

Mar 16, 2013 | Konica Minolta Developer 02xk Dv710 for...

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Error code sc 21-3

Charge Corona Cleaning device is stuck or is jammed. This cleaning device clean a very thin gold plate wire above the drum which places a High Voltage charge on the drum. You will need to remove the drum cartridge to get to it. The wire cleaning is normally done upon turning the machine on it may sound like a high pitch squeal. It can also be turned off, and not used at all. Has to be done in service mode soft switch setting.

Dec 23, 2012 | Konica Minolta Dv601k 7165 Developer

1 Answer

A message appear to clean the corona wire on drum unit

over the upper side of the drum unit there is a green or blue plastic piece that must be slided 2 or 3 times from left to right and viceversa. This is the corona cleaning procedure:comercial990.jpg

You can find it in the manual in this link:


Please, vote me as good as good is my solution.

Feb 25, 2011 | Brother MFC-8220 Fax

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Printer says drum error see trouble shooting and maintenence care in manual. I have replace toner and drum

Drum Error:

The corona wire on the drum unit
needs to be cleaned.
Clean the corona wire on the drum unit.
(See Cleaning the corona wire on page 122.)


The drum unit has reached the
end of its life.
Replace the drum unit.
(See Replacing the drum unit on page 130.)


Open the front cover
press Clear/Back
Press Start, then 00
after the screen show "accepted"
close the front cover and you are good to go.

Oct 27, 2010 | Brother Tn650 AllInOne Laser Printer

1 Answer

Our printed pages are coming out with the spots mentioned by another person but we are also having pages with b&W pictures that are irregularly shaded (like a piece of lace) where they should be a...

I would try cleaning the corona wire for the black (K). It is the closest to you (closest to the handle) in the drum unit.

Follow the procedure in your manual for cleaning the corona wire by sliding the green tab back and forth a few times. Be sure to return the green tab to its home position.

You can clean the corona wires for all of the colors in a similar fashion, if you deem necessary.

I hope this helps!

Jan 22, 2010 | Brother MFC-9440CN Laser Printer

1 Answer

I have a Canon imagerunner 5000 copier and i replaced the toner about a month ago and whenever i copy alot of copies at one time, it puts clear streaks in the middle of my copies and i can't read half of...

The first thing to try when experiencing these types of problems on this machine is to clean what are called the 'corona wires'. There are 3 sets of corona wires on the machine. The easiest set to see are on beside the transport bed. Open the front door then rack down the green handle and pull the unit towards you. If you look down and just right centre you will see a metalic unit running from the front to the back of the assembly with many wires running diagonally across the unit. Inside this unit is 2 very thin copper wires which can become dirty to the point of needing replacement. You can remove the unit and blow out the dust and waste toner but if you try and clean the very thin wire with a brush or alcohol be very very careful - you may well snap one and replacing it will be almost impossible if you have never done it before. You can by a new unit though. The other two sets are hidden by the front cover above the unit you pulled out but you would really need the service manual to remove them safely.

However, you can perform a wire cleaning procedure as a user and hopefully that will help by pressing the head key (head shpe symbol with a star inside) and then the 'adjustment and cleaning' then select 'clean wires' then the machine will move cleaning pads on each of these assemblies over the thin wires several times and ifthey are not overly dirty, that may well be the solution. Perform this procedure a few times. Good Luck

Jul 15, 2009 | Canon imageRUNNER 5000 Copier

1 Answer

Corona wire needs cleaning

Here is Brother's procedure for cleaning the corona wire:

Read this also:

copy and paste the link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Nov 30, 2008 | Brother HL-2170W Laser Printer

1 Answer

Cleaning the drum unit corona

Message is telling me that the drum is dusty. It says to clean the corona with the wire. I don't know what the corona is and I cannot find a wire that might help me know how to clean the corona

Aug 18, 2008 | Brother Office Equipment & Supplies

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