Brother MFC-9840CDW Laser Printer Logo
Anonymous Posted on Nov 15, 2010

I have a Brother MFC-9840 that comes up with Print Unable 21. I have cleaned as set out in maintenance to no avail. Please help. Thank-you

  • Anonymous Nov 15, 2010

    I tried entering maintenance mode but am unable to do so. Also I have tried Brothers suggestions as well.

  • Anonymous Nov 15, 2010

    I pulled power then pressed menu (and put power cord back in) , this got me into maintenance mode. When I then tried to copy I got Machine Error 21. Is this a part replacement?

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1 Answer

JDTec

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  • Brother Master 4,338 Answers
  • Posted on Nov 15, 2010
JDTec
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The MFC-9840 manual says that this code is reporting a mechanical error.
Try to reset your machine in maintenance mode:
menu * 2 8 6 4 (within 2 seconds)
91 and then 99 to exit service mode.

User manual:
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_MFC_9840CDW_EN_2378.PDF


Brother's suggestion:

Turn off the machine's power switch and then

turn it on again. If the error message continues

leave the machine for several minutes and then
try to print, copy or scan again


Good luck.....

Click on this link or copy and paste the complete link into your browser.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response.

Thanks, Joe



I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

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