MFC-7840N
FAQs & Troubleshooting |

MFC-7840N
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Popular
Updated:28/04/2026
These are the most viewed FAQs, ranked by popularity.
- 1.I installed the Full Driver & Software Package, but some applications were not installed. (For Windows 10)
- 2.The error message "Invalid format for short nick name" appears when printing a document. (Mac OS X 10.5 or greater)
- 3.Unable to print or scan when using Brother iPrint&Scan from my Android™ mobile device.
- 4.I'm using Windows Vista or Windows 7 and trying to use a Brother machine connected to the network, but the machine stays offline and I cannot print.
- 5.The printer status is Offline or Paused.
Latest
These are the latest FAQs, sorted by last update date.
13/04/2026
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.