FAQs & Troubleshooting
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MFC-J3940DW
141 Results
1.
I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
2.
Print using only the black ink cartridge when the Color cartridges have run out.
3.
Check the Print Alignment from Your Brother Machine
4.
Ink Low
5.
I cannot connect to the printer via Wi-Fi Direct using the Brother Print Service Plugin (Android™ 12 or later).
6.
I cannot use Gmail for Email functions (such as Scan-to-Email) and Internet Fax (I-Fax)
7.
Install the Brother Mobile Connect application (for mobile device)
8.
Print the Network Configuration Report
9.
Discover the MAC address of the Brother network card
10.
Change the Print Options to Improve Your Print Results
11.
The printer status is Offline or Paused.
12.
Wireless setup is requesting a WPS PIN to complete the setup
13.
What is the recommended paper?
14.
(Video) Print a long paper
15.
Add your Brother machine with AirPrint (macOS)
16.
Check the Print Quality
17.
Access Web Based Management
18.
My Brother machine could not be found over the network when I installed drivers on my computer.
19.
Protect your Brother machine against unauthorised access over the network
20.
Download a file from the "Downloads" section and save it to Windows 8 computer.
21.
Change the printer driver settings (Windows)
22.
Paper Size Mismatch
23.
Printer Jam or Paper Jam
24.
Replace Ink
25.
I cannot repair the wired or wireless connection using the Network Connection Repair Tool (Windows)
26.
I installed scan-key-tool, but it does not work. (Linux)
27.
Why doesn't my Brother machine have a dial tone?
28.
I cannot install Scan-key-tool in Ubuntu 23.10 or later, or in its derivatives. (Linux)
29.
What is the default password for my Brother machine?
30.
I cannot print or scan via USB on Debian 11 or later, Ubuntu 20.04 or later and on their derivatives (Linux)