Question about Brother MFC-9420CN All-In-One Laser Printer

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Brother 9420 - Unable to print - message.

Tried maintenance 77.
tried 1 and 7 together to reset the OPC.
After selecting the above reset the machine printed out but now the sign wont go away.

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  • frank1234 Jun 18, 2008

    unable to print see trouble shooting manuel Is the mesage

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5 Suggested Answers

bono1
  • 32 Answers

SOURCE: Unable to print. Error message Machine Error4F

here read this:
http://www.brother-usa.com/FAQs/Solution.aspx?FAQID=100000001887&Sympt=How+do+I+clear+the+message+Machine+Error+4F+from+the+display%3f&Model=89&ProductGroup=5&ProductID=MFC210C

Posted on Dec 09, 2007

sir fixalot
  • 146 Answers

SOURCE: MFC-9420 Replace OPC Belt message stays on after replacing belt

As far as the OPC belt - don't replace it until you start seeing ghosts and image defects! Reset it by:

Press 1 and 7 at the same time
Press 1 to reset the life counter.

Posted on Jan 03, 2008

  • 1 Answer

SOURCE: mfc 9420 brother

Same problem, went through the entire printer, removed all parts and it started working. Next day the same message

Posted on Jan 31, 2008

  • 215 Answers

SOURCE: blank lines on right side of paper on brother 9420 mfc

if it does this on all colors, try cleaning the laser **** glass located below toner cartridges. you could have drops of toner on it. if only certain colors, visually check your toner cartridge rollers.

hth,razors

Posted on Jan 09, 2009

  • 583 Answers

SOURCE: Problem with my printer Brother MFC-240C "Print unable 4F"

Access the internal maintenance mode by pressing the Menu/Set button, then press * 2 8 6 4 within 2 seconds. This should put you in the maintenance mode menu. Enter 80, then scroll down with the arrow down (round) key. You'll find an entry listed as purge count. If number is over 6000, enter 2 7 8 3.

This will reset the purge count value. Then the printer will restart,
try this step by step.without missing any thing. thanks

Posted on Jul 13, 2009

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1 Answer

I have a MFC-9420 CN that is giving me an "unable to print message" after I cleared a paper jam. I have turned it off and on several times, as that is the only help the user guide gives. I've read...


To reset on this machine you press the 3 and 9 together and scroll thru the options to reset. Unable to print without an error code doesn't tell me where your error might be.

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The opc sensor is not sensing the belt. Open the front cover and remove all the toner trays. You will see the green OPC and the sensor is located in the left upper corner. Also open the top cover and remove the OPC. Clean the sensor with a soft bristle brush. Also make sure the OPC left side is free of toner deposits. This may incorrectly trigger the OPC position sensor. Hope this helps.

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MFC 210c Unable to Print Use Troubleshouting and routine maintenance chapter in Users Manual


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This link will open the Users Manual, but you will need a PDF viewer such as Adobe Reader or Foxit Reader in order to open it.

Go to page 12-4 in Chapter 12, Troubleshooting and routine maintenance. Follow the actions recommended for the Unable to clean error message (and the four other Unable to... error messages).

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- Machine off
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- press 80
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- press “2783” in order to reset the purge counter. You will see: “purge:0000”
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5 Answers

Brother MF 9420CN is asking for troubleshooting and routine maintenance 'unable to print'


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  2. Press the Menu or Menu/Set key on the control panel.
  3. Press up or down navigation key to select LAN and press Set or Menu/Set.
  4. Press up or down navigation key to select Factory Reset and press Set or Menu/Set.
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1 Answer

Unable to print. Error message Machine Error4F


here read this:
http://www.brother-usa.com/FAQs/Solution.aspx?FAQID=100000001887&Sympt=How+do+I+clear+the+message+Machine+Error+4F+from+the+display%3f&Model=89&ProductGroup=5&ProductID=MFC210C

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4 Answers

MFC-9420 Replace OPC Belt message stays on after replacing belt


As far as the OPC belt - don't replace it until you start seeing ghosts and image defects! Reset it by:

Press 1 and 7 at the same time
Press 1 to reset the life counter.

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3 Answers

Cleaning troubleshoot needed


When trying to use your Brother machine you get the message "Unable to _____". The blank may be the word Change, Print, Scan or Clean and these words may vary from model to model. This message is a general message and will appear for different reasons. It often indicates a paper jam or a mechanical issue. Complete the following to determine the possible issue. 1. Check for foreign objects, such as a clip or ripped paper, inside the machine. Open the scanner cover by pulling up on the lower right corner of the cover. Look inside the machine and remove any foreign objects. If you see jammed paper or another item inside this area, gently pull it out and then close the scanner cover securely. 2. If the error continues to appear, the machine may have a mechanical problem. If the error message continues to appear, the machine will need to be reset. Resetting the machine will erase all faxes in memory and the Fax Journal Report. However, there is a way to transfer faxes in memory and the Fax Journal Report to another fax machine to print them out. Do the following to transfer the data and reset the machine:

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