MFC-9840CDW
FAQs & Troubleshooting |

MFC-9840CDW
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Popular
Updated:28.04.2026
These are the most viewed FAQs, ranked by popularity.
- 1.I installed the Full Driver & Software Package, but some applications were not installed. (For Windows 10)
- 2.I cannot install Brother drivers on Debian 10 or later (Linux)
- 3.How do I check if the machine has faxes in its memory when it has a mechanical problem?
- 4.What driver package format is supported by my Linux distribution?
- 5.I cannot send a fax using PC-FAX (Windows 10)
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.