MFC-9840CDW
FAQs & Troubleshooting |

MFC-9840CDW
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Popular
Updated:24/07/2026
These are the most viewed FAQs, ranked by popularity.
- 1.Printouts have wrinkles.
- 2.Unable to print or scan when using Brother iPrint&Scan from my Android™ mobile device.
- 3.The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
- 4.The printer status is Offline or Paused.
- 5.I am using Safari in Mac OS X. When I created a CSR or a Self-signed Certificate using the IP address to configure the "Common Name" and I try to access the Print Server using Safari with SSL communication, Safari issues an alert.
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 am having a problem receiving faxes.