MFC-9840CDW
FAQs & Troubleshooting |

MFC-9840CDW
Categorized
How To / Troubleshooting
Setup / Settings
Consumables & Accessories / Routine Maintenance
Others
Popular
Updated:28/04/2026
These are the most viewed FAQs, ranked by popularity.
- 1.I cannot connect to the printer via Wi-Fi Direct using the Brother Print Service Plugin (Android™ 12 or later).
- 2.When I try to scan the document, the scanner application crashes. (OS X 10.11)
- 3.The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
- 4.Unable to print or scan when using Brother iPrint&Scan from my Android™ mobile device.
- 5.How do I replace the belt unit?
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.