FAQs & Troubleshooting
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MFC-L3750CDW
339 Results
1.
The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
2.
(Video) Replace the Toner Cartridge
3.
The scanned data is attached to an E-mail application which I do not use regularly, or the error message indicating no default E-mail application is registered on my computer (CC4-121-[error code]) when trying to scan a document directly into my E-mail application using ControlCenter4 or the SCAN key on my Brother machine.
4.
Print on Both Sides of the Paper Automatically (Automatic 2-sided Printing)
5.
I cannot repair the wired or wireless connection using the Network Connection Repair Tool (Windows)
6.
Replace the Drum Unit
7.
Add your Brother machine with AirPrint (macOS)
8.
I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
9.
Paper is Jammed in the Back of the Machine
10.
Print as a Poster (Windows)
11.
What is Brother iPrint&Scan?
12.
Uneven color density across the page
13.
Replace the Waste Toner Box
14.
Set Telephone Line Compatibility for Interference and VoIP Systems
15.
Setup a Brother machine on a wireless (Wi-Fi) network.
16.
(Video) Set up your Brother machine
17.
Update your machine's firmware using Brother iPrint&Scan (Android/iOS)
18.
My Brother machine could not be found over the network when I installed drivers on my computer.
19.
The printer status is Offline or Paused.
20.
Cannot print after a Windows 10 update (June 2020)
21.
No Toner
22.
I cannot connect to the printer via Wi-Fi Direct using the Brother Print Service Plugin (Android™ 12 or later).
23.
Combine Address Book Numbers
24.
Scan Using Secure Function Lock 3.0
25.
Print or scan using the Brother iPrint&Scan application for mobile devices (Android/iOS)
26.
(Video) Connect telephone line and power cords
27.
How to identify your Operating System (OS).
28.
Replace the Belt Unit
29.
Load and Print on Envelopes in the Manual Feed Slot
30.
Manual Feed