MFC-7840W
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FAQs & Troubleshooting |

MFC-7840W
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Popular
Updated:08/01/2025
These are the most viewed FAQs, ranked by popularity.
- 1.Unable to print or scan when using Brother iPrint&Scan from my Windows Phone® mobile device.
- 2.Set up your Brother machine on a wireless network.
- 3.Scan and save a document in PDF format (Scan to File)
- 4.How to identify your Operating System (OS).
- 5.How do I make my copied images look sharper and more vivid? (Copy Contrast)
Latest
These are the latest FAQs, sorted by last update date.
07/30/2025
I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes.
07/30/2025
I am having a problem receiving faxes.
07/30/2025
Why doesn't the machine answer when receiving a call?
04/16/2025
I cannot print using my Brother machine on a wired network. (Windows/macOS)
04/16/2025
I cannot print from my computer via USB.