FAQs & Troubleshooting
![]() |
Popular |
![](/g/b/img/product/mfcl3780cdw_us_as.jpg)
MFC-L3780CDW
164 Results
Note: “*” indicates that the content is from the Online User’s Guide.
1.
I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
2.
(Video) Paper is Jammed in the Paper Tray
3.
(Video) Paper is Jammed in the Back of the Machine
4.
Install the Brother Mobile Connect application (for mobile device)
5.
(Video) Paper is Jammed inside the Machine
6.
What driver package format is supported by my Linux distribution?
7.
The color of your printouts is not what you expected
8.
I cannot repair the wired or wireless connection using the Network Connection Repair Tool (Windows)
9.
(Video) Set up your Brother machine
10.
I cannot use Gmail for Email functions (such as Scan-to-Email) and Internet Fax (I-Fax)
11.
I cannot print on a wireless (Wi-Fi) network (Windows)
12.
The error message "No AirPrint Printers Found" appears when I tap the Print icon on my mobile device ( iPhone, iPod touch, iPad ).
13.
Uneven color density across the page
14.
Document Jam
15.
(Video) Paper is Jammed in the Manual Feed Slot
16.
(Video) Paper is Jammed in the 2-sided Tray
17.
I cannot print or scan via USB on Fedora 38 or later and on their derivatives (Linux)
18.
Cannot Scan ##
19.
Change the printer driver settings (Windows)
20.
Out of Memory
21.
(Video) Paper is Jammed in the MP tray
22.
Vertical colored streaks or bands appear on the page
23.
Add your Brother machine with AirPrint (macOS)
24.
I cannot print or scan via USB on Debian 11 or later, Ubuntu 20.04 or later and on their derivatives (Linux)
25.
(Video) Document is Jammed under the Document Cover
26.
Discover the MAC address of the Brother network card
27.
My Brother machine could not be found over the network when I installed drivers on my computer.
28.
Adjust color settings by using the custom setting in the printer driver (Windows only)
29.
The printer status is Offline or Paused.
30.
(Video) Document is Jammed in the Top of the ADF Unit