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

Error 77 message


The 77 error is caused by a fuser temperature sensor. The following steps can be used to possibly reset the Intellifax 4100 77 error.

1. Unplug machine then wait 15-20 minutes.
2. Hold down menu key. Plug in machine.
3. Release menu key at maintenance message.
4. press 91 then set button
5. press 99 then set button
6. Machine will warm up.
7. Press Reports key, then press 1. This will test if the machine can
print.
If these steps do not reset the error the thermal fuse would have to be replaced by a repair technician.

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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.

Jan 28, 2010 | Brother MFC-9420CN All-In-One Laser...

1 Answer

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Check the flux capacitor, those usually go out on brother faxes.
I just replaced mine last week, same problem.

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1 Answer

NO OPC BELT on MFC-9420cn


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.

no-opc-belt-mfc-9420cn-grua3dqrdj4m0mpexfswu5ak-2-3.jpg

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


My color has not worked well in the past few months. Now I get the message Unable to Print, Use Troubleshooting and rountine maintenance chapter in user's manual. I've tried everything it told me. I've removed all ink cartridges and left them upright (they are ALL brand new) and cleaned all the ink ports. I've cleaned the machine several times. It's told me there's no ink cartrige, I've replaced them, turned the machine off and on, unlplugged, etc. Then go to print and I get the same message again and it won't print. The machine is almost 2 years old and has worked fine until about 6 months ago when the magenta stopped working all together. Now this. Any help? Thanks.

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3 Answers

Brother MFC-5840CN Unable to clean


- Machine off
- Switch on the machine while holding down the “menu”button until all the leds are flashing on/off. Now you are in “maintenance” mode.
- press 80
- press the “mono start” button several times until you see “purge: xxxx”
- press “2783” in order to reset the purge counter. You will see: “purge:0000”
- press the "stop" button.
- press “99” to exit the maintenance mode.

Apr 25, 2008 | Brother MFC-5840CN All-In-One InkJet...

5 Answers

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


Via the control panel (This is a Factory Reset)
  1. Make sure the machine is not operating, then disconnect all the cables from the machine (except power cable).
  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.
  5. Press 1 to select "Reset".
  6. Press 1 to select "Yes".
  7. The machine will re-start, re-connect cables once this is complete.

Jan 21, 2008 | Brother MFC-9420CN All-In-One Laser...

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

Dec 09, 2007 | Brother MFC 210C All-In-One InkJet Printer

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.

Dec 06, 2007 | Brother MFC-9420CN All-In-One Laser...

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