FAQs & Troubleshooting
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MFC-L3770CDW
340 Results
1.
Replace the Drum Unit
2.
The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
3.
(Video) Replace the Toner Cartridge
4.
Print on Both Sides of the Paper Automatically (Automatic 2-sided Printing)
5.
How to identify your Operating System (OS).
6.
Toner Low
7.
I cannot repair the wired or wireless connection using the Network Connection Repair Tool (Windows)
8.
Set Telephone Line Compatibility for Interference and VoIP Systems
9.
Easy Scan to E-mail
10.
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.
11.
Calibrate Color Output
12.
Toner scatter or toner stain
13.
I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
14.
Colors are light or faint on the whole page
15.
The color of your printouts is not what you expected
16.
Clean the Drum Unit
17.
Short Paper
18.
Drum !
19.
Document Jam
20.
Replace the Belt Unit
21.
Clean the Corona Wires
22.
I cannot print using my Brother machine on a wireless network (Mac)
23.
Setup a Brother machine on a wireless (Wi-Fi) network.
24.
Curled or wavy
25.
Set up your Brother machine on a wireless network.
26.
(Video) Load Envelopes (MP Tray)
27.
Set the F/T Ring Time (Pseudo/Double-ring)
28.
Paper is Jammed in the Back of the Machine
29.
Export the Certificate and Private Key
30.
I cannot save a file downloaded from the Brother support website (For Windows)