Question about Brother TN420-A1

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Brother TN-420 drum and toner light are on at the same time.

Lights are on solid. We've replaced both the drum and the toner units and it's still not working. Cleaned the corona, turned off and on and still not working. Is there another reset procedure?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Soulvisitor
  • 1113 Answers

SOURCE: Brother MFC-8500 prints solid gray pages

I have seen the Toner cartridge in these cause this and also thought it was drum but new toner actually fixes it, have you installed new gen toner as well as drum? Make sure you tell machine you have fitted new drum too,

Posted on Oct 27, 2007

  • 1 Answer

SOURCE: Brother Printer HL 1240

OK figured out the sequence to resolve this error:

power off unit
unplug power cable for 1 minute
reset the power cable
open front door
press and hold the reset button under the lights
turn the power on
printer should then be reset

Posted on Aug 16, 2008

SOURCE: brother 8460n - toner error

Hi, This worked for us:

The message "Toner Error" is usually caused by the drum and/or toner
cartridge not being installed properly or if the machine does not
recognize the toner. To clear this message, follow the steps listed
below:

1. Verify you are using Genuine Brother Cartridges. Brother strongly
recommends that you do not refill the toner cartridges provided with
your machine. We also strongly recommend that you continue to use only
Genuine Brother Brand replacement toner cartridges. Use or attempted use
of potentially incompatible tone cartridges in the Brother machine may cause damage to the machine and/or may result in
unsatisfactory print quality. Our warranty coverage does not apply to
any problem that is caused by the use of unauthorized third party toner
and/or cartridges. To protect your investment and obtain premium
performance from the Brother machine, we strongly recommend the use of
Genuine Brother Supplies.

2. Make sure that you are using the correct drum and toner cartridge(s)
for your machine. The part numbers for your model are as follows:
NOTE: Some cartridges can look EXACTLY the same among different models
and will fit the machine even if they are not designed for use in that
model. Verify the part number before using the cartridge(s).

TN550: Toner cartridge (standard)
TN580: Toner cartridge (high yield)
DR520 = Drum unitt.

3. Make sure that the cartridge is not damaged. Remove the toner
cartridge by following the steps listed below:

a. Press the cover release button and then open the front cover.

b. Remove the old drum unit and toner cartridge assembly. Place it on a
drop cloth or disposable paper to avoid scattering toner.
NOTE: Be careful not to spill the toner. If toner gets on your
clothes or hands, wipe or wash it off immediately with cold water.

c. Hold down the blue lock lever on the right and pull the toner
cartridge out of the drum unit.

d. Look at the toner cartridge and see if any parts or pieces appear to
be broken or missing, if so, the cartridge may be defective and should
be replaced.

4. If the toner cartridge is not damaged, reinstall it into the drum
unit. If it was damaged, use a new toner cartridge and reinstall it into
the drum unit.

5. Reset the drum/toner unit into the machine.

6. Close the front cover.

7. If the message "Toner Error' continues to appear on the display
unplug the machine from the wall outlet.

8. Open the front cover and remove the drum and toner assembly.

9. Look inside where the drum was. On the left side wall, look for a
small, black plastic lever/actuator. A flashlight may help see it.

10. Using the palm of your hand, slide it along the left wall in and
out a few times as this may free up the actuator/lever in case it is
stuck. The actuator/lever is spring loaded and needs to move back and
spring forward to operate correctly.

If the lever does not move, spring back or is missing and your machine
is within warranty, you can locate a Brother Authorized Service Center
(ASC) in your area or contact Brother Customer Service by calling
1-877-Brother (1-877-276-8437) Monday through Friday, excluding
holidays. If the machine is out of warranty, you can locate a Brother
Authorized Service Center using the information listed above.

If the lever moves freely and springs back to its original position
continue to Step 11.

11. Reinstall the drum and toner assembly, close the front cover and
plug the machine in.

Posted on Sep 02, 2008

xptareq2000
  • 1447 Answers

SOURCE: Brother DCP 7020 Keeps giving me the "Drum Error" Message

Dear sir you see properly drum unite has a drum image sensor its demage so you change your copier drum unite, thanks.

Posted on Nov 22, 2009

ross_lovegro
  • 1 Answer

SOURCE: Brother MCF-7340 first time toner replacement

If it is your first toner replacement you shsould only need the TN-360, as the drum should be good for about 12,000 copies. The machine will tell you when you are getting close to replaceing drum unit.

Posted on Oct 13, 2010

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1 Answer

Dr 420 how install it


Fit the toner cartridge into the new drum, open the face/hatch of the machine and slide the drum/toner into the cavity. Push the unit all the way back until it is solid. With the hatch open (and power on) follow the reset instructions. For a printer find the stud that would sit under the "go" button when the hatch is closed, usually left side at the font. Press and hold until ALL the lights are illuminated then release. Close the hatch - job done. If the machine is copier/fax, press either the options or clear buttons. A message will apper in the LCD display "Change Drum" 1:yes 2:no (or something to that effect) - key yes, close hatch, job done.

Oct 29, 2013 | Brother Dr420 Black Drum Unit Cartridge

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My brother DCP 7055 shows eror replace toner


Some Brother laser printers have separate consumables - the toner cartridge and the drum unit. From time to time you may need to replace only the drum unit and not the toner cartridge.

The error LED lights up, or an error message shows on a flat screen panel, when the drum unit is near the end of its working life. Use the drum unit until you have a print quality problem, then replace the drum unit with a new one.

Jul 26, 2012 | Brother 1 Black Genuine Laser Toner For...

1 Answer

Error message "put the black toner cartridge back in"


I got this same error message on a newly acquired Brother DCP-7040 that I purchased used off of ebay.

As I was troubleshooting this unit (that I bought untested off of ebay - hey gambling has paid off handsomely for me many times before!), this error message kept popping up.

I checked the COUNTERS (page & Drum life) and found out that the DRUM had 0% life left. BUT, the reason it showed ZERO was because this unit did not have any drum! The toner cartridge (TN-360) needs to sit WITHIN the drum (DR-360) on this DCP-7040 unit, as well as in models DCP-7030, MFC-7340, MFC-7345C, and MFC-7440N.

So perhaps some of these "put the black toner cartridge back in" problems could be related to the DRUM (or lack thereof). A possible tipoff (since the toner cartridge actually does slide into the unit much like other units that do not use Brother's DRUM carrier) seems to be the relative ease with which the toner cartridge slides into the DCP-7040 and really doesn't seem to "lock" into position real firmly.

DCP-7040 USER GUIDES: http://welcome.solutions.brother.com/bsc/public/us/us/en/doc/manual_index.html?reg=us&type2=-1&prod=dcp7040_us_as&c=us&lang=en&flang=all

Apr 23, 2012 | Brother MFC-7340 All-In-One 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

1 Answer

Drum Unit Warning will not stop after replacement


Hi there

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

All best Pineworks

May 04, 2010 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Change drum


You need to go buy a Brother DR-350 drum unit cartridge. The drum unit is the thing that the toner cartridge (TN-350) clicks into. Pull out the drum/toner unit and separate the two halves. Place your TN-350 into the new DR-350 cartridge and put back in the printer.

Jan 18, 2010 | Brother IntelliFax-2820 Laser Fax

2 Answers

Brother MCF-7340 first time toner replacement


If this model comes with the drum separately of the cartridge, only replace the cartridge. There's no need to change it every time. until prints start to get lines or dots. Don't expose the drum to light too much.

Jul 30, 2009 | Brother MFC-7340 All-In-One Laser Printer

2 Answers

Toner for fax machine 2920


If your machine is a Brother Intellifax 2920, it does take a TN-350 toner cartridge. Maybe you were wanting to replace the Drum Unit instead, DR-350. I'll bet this info is useful, yes?

Jul 03, 2009 | Brother FAX-2920 Plain Paper Laser

1 Answer

Black horizontal lines in printout


Seems like the drum needs changing. This is the most common cause for print problems in these printers. If using the high yield TN 6600 toner then you need to change the drum every 3-4 toners. If using the low yield TN 6300 toner then the drum will need replacing every 6-7 toners. Hope this helps

Nov 16, 2008 | Brother HL 1440 Laser Printer

2 Answers

BROTHER HL-2040


I think the previous post applies to resetting the drum light after replacing the drum.

You need to reset the toner end-of-life condition.

  1. Open the Front cover
  2. Press and hold the GO button
  3. Power ON the printer while continuing to hold the GO button
  4. All 4 LED's will light up and then 3. Once the 3 LED's are lit, release the GO button
  5. Press the GO button 2 times. This will cause the
    LED's to light solid
  6. With the LED's lit solid, press the GO button 5 times
  7. At this point the Paper light should be blinking. Toner end-of-life has been reset
  8. Close the front cover.

Dec 10, 2007 | Brother HL-2070N Laser Printer

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