RJ-4040
FAQs & Troubleshooting |

RJ-4040
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Updated:02/27/2026
These are the most viewed FAQs, ranked by popularity.
- 1.The print quality is poor, and the image is too light or dark.
- 2.How do I connect RJ printer to my computer?
- 3.The Brother Print SDK Demo app will not be available on Google Play™.
- 4.Wi-Fi® indicator is lit in blue but the printer cannot communicate with other devices via Wi-Fi.
- 5.P-touch Editor displays “There is no printer driver installed with this application.” (for Windows 10)
Latest
These are the latest FAQs, sorted by last update date.
01/06/2026
What iOS mobile application can I use?
01/06/2026
What Android™ mobile application can I use?
12/24/2025
I cannot print from the printer in a network-shared environment.
10/28/2025
I forgot the password I set previously.
08/26/2025
The Brother Print SDK Demo app will not be available on Google Play™.