Question about Brother MFC-9840CDW Laser Printer

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My Brother MFC 9840-CDW is printing blurry

I changed Belt unit and now prints come out blurry

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: Printer will not print, says

Base from the description of your problem this can be a hardware problem on your printer, but lets try to doing some things. First if your printer says offline under control panel printer and faxes follow this. Right click on the icon for your Brother machine and choose Use Printer Online. Then try if you can print.
But if the offline error is on your printer lcd screen , power off and unplug the printer from the power outlet for 30 minutes then power it back on and check if its working already.
You can also run the setup cd for your printer to your computer to reconfigure it back.

Posted on Aug 24, 2010

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SOURCE: Hi I have a Brother MFC 9840 CDW multi function

Remove drum & cartridge and clean opc drum with dry soft cloth

Posted on Jan 06, 2011

  • 699 Answers

SOURCE: How do I reset the

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!

Posted on Sep 20, 2011

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1 Answer

Print unable 71


Print Unable 71 means Polygon Mirror Failure on the Brother HL-4040, MFC-9840 and MFC-9440.
Pretty safe to say it means the same thing on the MFC-8880.

The Polygon Mirror is part of the Laser Unit, and its rpm isn't within specs.
The Laser Unit must be replaced.

Jan 08, 2015 | Brother MFC-8880DN Mono Multifunction...

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Why brother mfc 7360n printing envelopes wrinkle paper


Do U mean wrinkle the envelopes?,,,,I can solve some MFC-9840-CDW issues, but the 7369N is a guess. Read your manual or do a google search.....There maybe a setting in the 7360N that adjusts printing for card stock and envelopes....

Jul 01, 2014 | Brother MFC-9840CDW Laser Printer

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Need installation driver disc for a brother mfc 9840 cdw copier


You can download the Brother printer drivers from their support WEB site. Please click on this link and select your model printer to download : - http://www.brother.com.au/ProductsSolutions.aspx

Aug 10, 2012 | Brother MFC-9840CDW 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

Viewing total installed memory


Print a User Settings Report:

Menu
6
5
Press Mono Start or Colour Start
Press Stop/Exit

Cheers

Dirk

Aug 16, 2008 | Brother MFC-9840CDW Laser Printer

1 Answer

MFC-9840 prints vertical stripe ~2" from right edge on all color printouts


Hi,
The first thing i would try to do is clean the corona wire on the drum unit. It might also be a faulty magenta cartridge.

Dec 07, 2007 | Brother MFC-9420CN All-In-One Laser...

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