MFC-7840N
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MFC-7840N
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Popular
Updated:14/07/2026
These are the most viewed FAQs, ranked by popularity.
- 1.When I try to scan the document, the scanner application crashes. (OS X 10.11)
- 2.Which connection can I use to print from my device (Android™) using the Brother iPrint&Scan?
- 3.I'm using Windows. When I try to Scan to E-mail I get an error saying "the command line argument is not valid. Verify the switch you are using". What should I do?
- 4.Can I print from or scan to Android™ Smartphone?
- 5.Can I connect a telephone on the same line as the Brother machine in Fax/Tel Mode?
Latest
These are the latest FAQs, sorted by last update date.
01/06/2026
How to identify your Operating System (OS).
05/02/2026
I cannot find a file downloaded from the Brother support website (For Windows)
19/01/2026
I can print but cannot scan via network. (For Mac)
05/11/2025
I cannot find some option in the Printing preferences. (For Windows)
30/07/2025
I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes.