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

1 Answer

Drum Unit Warning will not stop after replacement

I replaced the drum unti and toner cartridge of my brother printer (MFC 420) and the menu still says "Drum unit End"...

I am worried that the unit is not working correctly and that the toner will be drained prematurely.

thank you!

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  • 4,041 Answers

Hi there

You need to get into the menu and in there reset the toner,

All best Pineworks

Posted on May 04, 2010

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1 Answer

I HAVE REPLACED TONER WITH THE CORRECT BROTHER TONER CARRTRIDGE AND THE MACHINE KEEPS TELLING ME TONER ERROR AND REINSTALL DRUM UNIT..HELP


Hi there,

Below are instructions that I have found from the internet. Hope that they will help.

  • Open the front cover of the printer.
  • Hold down the Go button for 4 seconds until all the LEDs light up. Then release the Go button
  • Remove the drum unit and toner cartridge assembly.
  • Replace the drum unit and toner cartridge assembly back into the printer.
  • Close the front cover of the printer
  • Your drum unit should now be reset
  • MFC / DCP PRINTER SERIES

    1.Remove the drum unit and toner cartridge. Wait 1 or 2 minutes.
    2.Replace the drum unit and toner cartridge into printer.
    3.The error message "Change Drum Soon/Drum end soon" will continue to appear if the drum counter was not reset when you replace the drum unit.
    4.To clear this error message, you need to reset the drum counter as instructed below.
    5.Make sure that the machine is turned on.

    For MFC users: To confirm you are installing a new drum, press 1. For DCP users To confirm you are installing a new drum, press the Up Arrow key

    7.When the LCD shows Accepted, close the front cover.
    8.Your drum is now reset.

    Resetting the drum unit will not improve print quality. It only resets your drum and allows you to continue to print. You decide when to replace the drum unit not the manufacturer!

Feb 24, 2015 | Brother MFC-8860DN Printer

1 Answer

How to replace drum on 7840w printer


  • Open the door on the front of the printer.
  • remove the drum/toner from the opening pulling out and lifing up slightly.
  • remove the toner cartridge from the drum unit. (press green level to release.
  • insert toner cartridge into the new drum unit

link for general printer help : http://www.brother-usa.com/support/ModelInfo.aspx?R3ModelID=MFC7840W#.VNkfGfnF-RY

FAQ with instructions on drum replacement.

Frequently Asked Questions

Jul 11, 2014 | Brother MFC 7840W Printer

1 Answer

What does a belt life ends soon mean, on a brother MFC 9440ch color laser printer?


Are you sure of the error message? The Brother printers that I have used have Drum Ends Soon and Change Belt messages.

The Brother MFC-9440CN has a belt that can be replaced. The Belt unit has an life expectancy of ~50000 pages. The belt unit is part BU100CL and costs a bit over $150 at office supply stores. Amazon.com and some other stores have the unit for under $100. http://www.amazon.com/Brother-BU-100CL-HL-4040CN-HL-4070CDW-Series/dp/B000SC245E is one source.

When the unit says Change Belt Unit, follow the directions from the manual's maintenance section to replace the belt unit. See page 178 (page 189 of the PDF) http://welcome.solutions.brother.com/BSC/public/files/dlf/doc002252/mfc9440_usa_usr_b.pdf . You have to remove the Drum and then the Belt Unit. Then slide in the new Belt Unit and replace the Drum unit. Then close the printer and turn it on. Finally reset the counter from the Machine Info sub menu (press Menu 8 4 and select the Belt Unit and press OK. Then press 1 followed by Stop/Exit).

If you mean the Drum Unit, that is part DR-110CL and costs over $175 at the office supply stores. Order this part when the Drum End Soon message appears and replace it if the print quality deteriorates (or when you have the new drum). The Drum Life is ~17000 pages. The steps start on page 166 (182 of the PDF). You need to remove the old Drum unit. Then remove the toner cartridges from the drum. Prepare the new Drum Unit, including putting the cartridges in the new Drum. Then replace the Drum unit and reset the counter.

I hope this helps.

Cindy Wells

Jun 04, 2012 | Brother MFC-8460N Laser Printer

1 Answer

How do I reset the counter for the drum unit on a Brother MFC 9840-CDW. It says to replace the drum but the unit is printing flawlessly.


On the TN-155 toner cartridge, a mechanical 'flag gear' that will reset the counter for each individual cartridge when first 'triggered'.
After each page print, the appropriate counters are incremented regardless of toner content (that is why it is still printing 'flawlessly') and after a pre-determined count has been reached, you will get a warning to change the drum as is will then be notionally (not actually) empty.
Before you decide to reset the 'flag gear' on the drum, make sure you are not actually nearing the physical empty state ... it might be a wiser decision to purchase a refill kit which should come with instruction on how to fill and reset the 'flag gear' (this needs some dismantling of the drum cartridge) or buy a compatible or genuine toner drum cartridge.
In any case, Google 'Brother drum flag gear' for more information.
Good luck!

Sep 20, 2011 | Brother MFC-9840CDW Laser Printer

2 Answers

How do you turn off the drum alert after installing a new drum on the MFC-9840CDW Brother Laser printer?


Hi,I think this guys can have more helpful information about your problem.See this link:http://www.quikshiptoner.com/catalog/brother-mfc-9840cdw-toner-color-set.html#resett_drum_manualview More Info button to see how to install the Drum unit. Pay attentionthat after replacing a Drum unit in Brother MFC-9840CDW you have to reset thecounter. See steps 9, 10 and 11 for doing so.9) Close thefront cover, plug the power cable back in and turn on the printer.10) Press the Menu button,and then enter the number 84 to access the Reset Menu.11) Press the scroll keys until Drum is displayed and press OK.
I hope this can be helpful for you.

Jan 15, 2011 | Brother MFC-9840CDW Laser Printer

1 Answer

Is the "change drum soon" message instructing to


This indicator is for the drum unit, not the toner cartridge. The drum unit is the assermbly that the toner cartridge is inserted into when being replaced. The drum unit is replaced about every 18,000 pages so after about 5 to 10 toners have been replaced.
Here is a picture of the drum unit.

268d863.jpg

Oct 28, 2010 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

The toner tray will not pull out from the machine


Replacing the Toner Cartridge
The MFC can print up to 6,000 pages using a high yield toner cartridge. When
the toner cartridge is running low, the LCD shows TONER LOW. The MFC is
supplied with a standard toner cartridge that must be replaced after
approximately 3,000 pages. Actual page count will vary depending on your
average document type (i.e., standard letter, detailed graphics).
Discard the used toner cartridge according to local regulations. If you are not
sure of them, your local Sanitation Department. Be sure to seal the toner
cartridge tightly so toner powder does not spill out of the cartridge. When
discarding used toner cartridges, keep them separate from domestic garbage.
We recommend that you clean the MFC when you replace the toner cartridge.
1 Open the front cover and pull out the drum unit.
Place the drum unit on a drop cloth or large piece of disposable paper to avoid
spilling and scattering the toner.
2 Hold down the lock lever on the right and pull the toner cartridge out of the drum
unit assembly.
Caution
Handle the toner cartridge carefully. If toner scatters on your hands or clothes,
immediately wipe it off or wash it with cold water.
3 Unpack the new toner cartridge. Place the used toner cartridge into the
aluminum bag and discard it according to local regulations.
 Wait to unpack the toner cartridge until immediately before you install it in the
MFC. If a toner cartridge is left unpacked for a long period of time, the toner life
is shortened.
 You can use only a genuine Brother toner cartridge (TN-430 or TN-460), which
is specially formulated to ensure top print quality. Using another brand of toner
cartridge may void your MFC’s warranty. Warranty coverage does not apply to
problems caused by the use of 3rd party Toner, 3rd party Toner Cartridge or 3rd
party Drum unit.
4 Gently rock the toner cartidge from side
to side five or six times to distribute the
toner evenly inside the cartridge.
5 Remove the protective cover.
6 Insert the new toner cartridge in the
drum unit until it clicks into place.
7 Clean the primary corona
wire inside the drum unit by
gently sliding the blue tab
from right to left several
times. Return the blue tab to
the Home position ( )
before reinstalling the drum
unit assembly.
Reinstall the drum unit and close the
front cover.
Replacing the Drum Unit
The MFC uses a drum unit to create print images on paper. If the LCD shows
CHANGE DRUM SOON, the drum unit is near the end of its life and it is time
to purchase a new one.
Even if the LCD shows CHANGE DRUM SOON, you may be able to continue
printing without having to replace the drum unit for a while. However, if there
is a noticeable deterioration in the output print quality (even before CHANGE
DRUM SOON appears), then the drum unit should be replaced. You should
clean the MFC when you replace the drum unit. (See page 21-18.)
Caution
When removing the drum unit, handle it carefully because it contains toner. If
toner scatters and your hands or clothes get dirty, immediately wipe or wash
with cold water.
WARNING
Just after you have used the MFC, some
internal parts of the MFC are extremely
HOT! So please be careful.
The drum unit is a consumable item, and it is necessary to replace it periodically.
There are many factors that determine the actual drum life, such as temperature,
humidity, type of paper and how much toner you use for the number of pages per print
job. The estimated drum life is up to 20,000 pages. The actual number of pages your
drum will print may be significantly less than these estimates. Because we have no
control over the many factors that determine the actual drum life, we cannot
guarantee a minimum number of pages that will be printed by your drum.

Oct 02, 2009 | Brother MFC-9840CDW Laser Printer

2 Answers

Printer ghosting(?) after replacing toner cartridge/drum assembly


helo braxtol! tell me, are you using brother oem toner and drum or are you using a generic brand. you could also have a bad power supply. this is what charges the drum and toner. good luck brother tech

Jan 31, 2009 | Brother MFC 7420 All-In-One Laser Printer

5 Answers

Reset drum - brother mfc-8860dn


Open front cover

Remove drum unit and toner cartridge assembly

Put drum unit and toner cartridge assembly back in machine, but do no close front cover.

Press Clear/Back
You will get a message "Replace Drum?"
Select Yes to confirm

Jan 06, 2008 | Brother MFC-8860DN Printer

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