FAQs & Troubleshooting
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MFC-L3770CDW
339 Results
1.
I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
2.
Replace the Waste Toner Box
3.
I cannot repair the wired or wireless connection using the Network Connection Repair Tool (Windows)
4.
The printer status is Offline or Paused.
5.
Set Telephone Line Compatibility for Interference and VoIP Systems
6.
Replace Fuser
7.
(Video) Replace the Toner Cartridge
8.
Brother iPrint&Scan cannot find my Brother machine (macOS)
9.
Replace the Belt Unit
10.
What can happen if the wrong paper is used in your machine.
11.
What is the recommended paper?
12.
Set the F/T Ring Time (Fast Double-ring)
13.
Confirm the results about faxes that I sent and received.
14.
My printed documents are incomplete or a blue screen appears when printing or using PC-FAX after a Windows 10 update (March 2021)
15.
Set up your Brother machine on a wireless network.
16.
(Video) Load Envelopes (MP Tray)
17.
Adjust color settings by using the custom setting in the printer driver
18.
Set the Number of Rings Before the Machine Answers (Ring Delay)
19.
Secure Print (Windows®)
20.
Cannot print after a Windows 10 update (June 2020)
21.
I cannot print using my Brother machine on a wired network. (Windows/macOS)
22.
I cannot print on a wireless (Wi-Fi) network (Windows)
23.
I cannot print using my Brother machine on a wireless network (Mac)
24.
Print on Both Sides of the Paper Automatically (Automatic 2-sided Printing)
25.
How can I use my NFC-enabled Android™ device with the Brother NFC-enabled machine?
26.
I cannot find some options in the Print dialog box. (For OS X v10.7 to 10.15)
27.
I still receive the error message "Replace Drum", "Drum End Soon" or "Drum Stop" after I replace the drum unit with a new one.
28.
The message "ERROR" or "NG" appears on the Transmission Verification Report when I try to send a fax.
29.
Ghosting images
30.
Add your Brother machine with AirPrint (macOS)