MFC-9840CDW
FAQs & Troubleshooting |

MFC-9840CDW
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Popular
Updated:21/05/2026
These are the most viewed FAQs, ranked by popularity.
- 1.Tips for copy/scanning and preventing document jams
- 2.Duplex (two-sided) scan
- 3.The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
- 4.Can I print all PDF formats from my device (Android™) using the Brother iPrint&Scan?
- 5.When I print from PowerPoint using the 2 in 1 feature, some of the borders around the document are not printed or lines are printed that shouldn't be there.
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 am having a problem receiving faxes.