MFC-7840N
FAQs & Troubleshooting |

MFC-7840N
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Popular
Updated:09/06/2026
These are the most viewed FAQs, ranked by popularity.
- 1.I still receive the error message "Replace Drum", "Drum End Soon", "Drum Near End", or "Drum Stop" after I replace the drum unit with a new one.
- 2.I installed the Full Driver & Software Package, but some applications were not installed. (For Windows 10)
- 3.Which connection can I use to print from my device (iPhone, iPod touch, iPad) using the Brother iPrint&Scan?
- 4.Printing documents from the Brother iPrint&Scan when using an Android™ mobile device.
- 5.I cannot find the destination computer on the network when I try to scan a document using the machine's Scan key or control panel.
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.