RJ-4040
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FAQs & Troubleshooting |
RJ-4040
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Updated:23.01.2026
These are the most viewed FAQs, ranked by popularity.
- 1.A communication error occurs when printing via serial cable (RS-232C).
- 2.How to charge the rechargeable Li-ion battery
- 3.How do I connect my printer to the computer via Wi-Fi® using an access point? (Windows 11 24H2)
- 4.Transfer Express cannot detect my printer when it is connected to a Windows 11 computer via USB.
- 5.How to identify your Operating System (OS) for Windows or Mac
Latest
These are the latest FAQs, sorted by last update date.
06.01.2026
What iOS mobile application can I use?
06.01.2026
What Android™ mobile application can I use?
24.12.2025
I cannot print from the printer in a network-shared environment.
28.10.2025
I forgot the password I set previously.
26.08.2025
The Brother Print SDK Demo app will not be available on Google Play™.