MFC-7840N
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FAQs & Troubleshooting |

MFC-7840N
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Popular
Updated:01/08/2025
These are the most viewed FAQs, ranked by popularity.
- 1.Scan and save a document in PDF format (Scan to File)
- 2.Recently, when I print a document from the manual feed slot, my Brother machine is taking more time than usual to start feeding paper. How can I reduce the time it takes to start feeding paper?
- 3.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.
- 4.I don't think I got the full yield from my high-yield toner cartridge but the message "Toner Life End" or "Replace Toner" is displayed on the machine or the LED is on or flashing.
- 5.Scan multiple pages into one file instead of each scan being saved as a separate file.
Latest
These are the latest FAQs, sorted by last update date.
30/07/2025
I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes.
30/07/2025
I am having a problem receiving faxes.
30/07/2025
Why doesn't the machine answer when receiving a call?
16/04/2025
I cannot print using my Brother machine on a wired network. (Windows/macOS)
16/04/2025
I cannot print from my computer via USB.