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

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Won't print Color

Hi, I have a MFC-420CN printer which will not print in color. It prints black ink fine. A couple of the cartridges were near empty so I replaced all 3 color cartidges & still no luck. I even uninstalled & reinstalled the software. I went through the ink/test print & got the same thing. There are no error codes or problems, it just won't print any of the colors.

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Re: Won't print Color

Have you check on your printer's color preference? It may only be a simple problem with your gray scale.Change the color preference on your printer icon's menu. You can also clean up your electronic connectors that comes in contact with the cartridges with a cotton dipped in alcohol. See <a rel='nofollow' href="">troubleshooting</a> procedures here.

Posted on Dec 13, 2012

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Re: Won't print Color

Old Dad, this is a common prob of the brother printer. It has nothing to do with the software and depends on the cartridges being used (are they thirdparty ones?) and in some cases air bubbles within the capillarysystem, or a defective valve within the printhead. I guess before you have changed the carts everything was working quite normal. So, this in mind, try the following procedure: Check cartridges if positioned well. Press them into position again, so that there is a good, open contact for ink to run into the capillaries! Power on printer. Press menu then start mono (b/w) then 4x arrow-up-button. Machine will be in maintainance mode and beeps. Press 7 then 6. Machine displays Cleaning_all. Press 3. Power_p all will be displayed. Press start mono (b/w). Machine starts a power cleaning cycle. Wait until machine displays maintanance again. Press 0 (zero) then 9. Machine starts printing ink/test printsheet. If it is OK press 9 then 9 to quit the maintanance mode. If it is not OK press 7, 6 then 4 (init_all), then start mono (b/w). Machine will initialize the cartridges and clean the head. When finished press 0 , 9 again for test printing. If you dont see any success after both procedures, your printhead may be clogged or dryed out.

Posted on Sep 29, 2007

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By design, Brother printers stop all printing when one of the cartridges is empty. This is done to avoid cleaning cycles sucking air into the system, which could possibly damage the printhead.

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The print head is clogged.Try powerful cleaning:
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Will no print black color doc if any other color ink is empty

actually, its not. the reason is, there is a small resovoire (sp?) in the ink cartridges. if you continue to print, the nozzles will clog up, and can cause all the nozzles not to work. even when you do just black, the printer has to clean at times all the nozzles and if your nozzles are empty, air will go into the deep and dry up the excess ink.

if you are going to do primarily black prints, you should get a black and white laser for those uses only.

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Brother MFC-420CN All-In-One

unplug maqchine from power. take all carts out. wait 5 minutes. connect machine to power. insert carts as demanded. give the right answer if machine asks if the carts are changed. machine will do some cleaning.

do you use generic ink? in that case you might have clogged the printhead with wrong ink. The ph cant be cleaned anymore.

nevertheless try this (carts should be nearly full!):
press menue then start mono (blue copy) then fourtimes arrow up. machine will be in maintenance mode. press 7 then 6 then 4. Machine will display init_all. press start mono. machine will refill tubes and
ph with fresh ink and do some cleaning. after that press 7 then 6 then 3 and start mono. machine will do a powerpurge.
press zero then 9 to do a quality test print. If it cant do the job leave maintenance by pressing 9 then 9. do the test print manually by pressing ink etc.

If you still do not see any colors the ph is clogged and cant be fixed anymore. It has to be replaced.

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Cannot print

It seems that another cart is empty. Check all cartridges when printer is off. And yes, you do need the color ones to print in bk.

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