FAQs & Troubleshooting
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MFC-9840CDW
364 Results
1.
I installed the Full Driver & Software Package, but some applications were not installed. (For Windows 10)
2.
The error message "No Supported Devices Found" appears on the Brother iPrint&Scan screen (mobile device).
3.
I cannot connect to the printer via Wi-Fi Direct using the Brother Print Service Plugin (Android™ 12 or later).
4.
When I try to scan the document, the scanner application crashes. (OS X 10.11)
5.
Duplex (two-sided) scan
6.
Unable to print or scan when using Brother iPrint&Scan from my Android™ mobile device.
7.
Scan and save a document in PDF format (Scan to File)
8.
My printed documents are incomplete or a blue screen appears when printing or using PC-FAX after a Windows 10 update (March 2021)
9.
Tips for copy/scanning and preventing document jams
10.
Use the Universal Printer Driver for BR-Script. (PostScript language emulation)
11.
Unable to print or scan when using Brother iPrint&Scan from my Windows Phone® mobile device.
12.
I am using Safari in Mac OS X. When I created a CSR or a Self-signed Certificate using the IP address to configure the "Common Name" and I try to access the Print Server using Safari with SSL communication, Safari issues an alert.
13.
Color around the edge of printing is incorrect.
14.
What is Brother iPrint&Scan?
15.
Can I print from and scan to iPhone, iPod touch and iPad?
16.
A margin appears on the right side of the scanned document when using the Brother iPrint&Scan application on my Android™ mobile device.
17.
I cannot use the Scan to E-mail with Outlook2003 or Outlook2007 after updating ControlCenter3. The error message "command line argument is invalid" appears. What can I do?
18.
Can I use voice mail on the same line as my Brother machine?
19.
White streaks or bands appear down the page.
20.
White lines or bands or ribbing appear across the page.
21.
I get an error "Print Queue is stopped". (Mac OS X 10.2 - 10.4)
22.
How do I turn off/on the Toner Save Mode?
23.
I just replaced the toner cartridge and the LCD continues to display the message "Toner Life End" or "Replace Toner".
24.
I am using Voice Over Internet Protocol (VoIP) and cannot send and/or receive faxes.
25.
I cannot install Brother drivers on Debian 10 or later (Linux)
26.
Wireless setup is requesting a WPS PIN to complete the setup
27.
I cannot print using my Brother machine on a wireless network (Mac)
28.
Can I print all PDF formats from my device (Android™) using the Brother iPrint&Scan?
29.
I still receive the error message "Replace Parts Drum" or "Drum End Soon" after I replace the drum unit with a new one.
30.
When I try to dial a One Touch or Speed Dial number, my Brother machine's LCD reads "Not Registered."