Brother MFC-J3940DW User Manual

Home > Network > Wireless Network Settings > Use the Wireless Network > Configure Your Machine for a
Wireless Network Using the Machine's Control Panel Setup Wizard
Configure Your Machine for a Wireless Network Using the Machine's
Control Panel Setup Wizard
Before configuring your machine, we recommend writing down your wireless network settings. You will need
this information before you continue with the configuration.
1. Check and record the current wireless network settings of the computer to which you are connecting.
Network Name (SSID)
Network Key (Password)
For example:
Network Name (SSID)
HELLO
Network Key (Password)
12345
• Your access point/router may support the use of multiple WEP keys, but your Brother machine supports
the use of only the first WEP key.
• If you need assistance during setup and want to contact Brother customer service, make sure you have
your SSID (Network Name) and Network Key (Password) ready. We cannot assist you in locating this
information.
• If you do not know this information (SSID and Network Key), you cannot continue the wireless setup.
How can I find this information?
- Check the documentation provided with your wireless access point/router.
- The initial SSID could be the manufacturer's name or the model name.
- If you do not know the security information, consult the router manufacturer, your system
administrator, or your Internet provider.
2. Press [Settings] > [Network] > [WLAN(Wi-Fi)] > [Find Wi-Fi Network].
3. When [Enable WLAN?] appears, press [Yes].
The wireless setup wizard starts. To cancel, press [No].
4. The machine searches for your network and displays a list of available SSIDs. When a list of SSIDs appears,
press a or b to select the SSID you want. Press [OK].
5. Do one of the following:
• If you are using an authentication and encryption method that requires a Network Key, enter the Network
Key you wrote down in the first step, and then press [OK] to apply your settings.
• If your authentication method is Open System and your encryption mode is None, go to the next step.
6. The machine attempts to connect to the wireless device you have selected.
If your wireless device is connected successfully, the LCD displays [Connected].
You have completed the wireless network setup. To install the drivers and software necessary to use your
machine, go to your model's Downloads page at support.brother.com.
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Brother MFC-J3940DW Specifications

General

Card reader integrated	No
Sound power level (printing)	65.4 dB
Sound pressure level (printing)	50 dB
Scan to	E-mail, E-mail Server, FTP, File, Image, OCR, USB
Scan drivers	SANE, TWAIN, WIA
Scanner type	ADF scanner
Duplex scanning	Yes
Grayscale levels	256
Input color depth	48 bit
Output color depth	24 bit
Input grayscale depth	16 bit
Output grayscale depth	8 bit
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	1200 x 2400 DPI
N-up printing	2, 4, 9, 16
Print technology	Inkjet
Maximum resolution	4800 x 1200 DPI
Duplex printing mode	Auto/Manual
Print speed (ISO/IEC 24734) mono	28 ipm
Print speed (ISO/IEC 24734) color	21 ipm
Time to first page (black, normal)	4.4 s
Time to first page (color, normal)	4.6 s
Print speed (black, normal quality, A4/US Letter)	- ppm
Display	LCD
Control type	Buttons, Touch
Product color	Gray
Display diagonal	3.5 \
Market positioning	Home & office
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology	10/100Base-T(X)
Security algorithms	802.1x RADIUS, APOP, SMTP-AUTH, SNMPv3, SSL/TLS
Ethernet LAN data rates	10, 100 Mbit/s
Mobile printing technologies	Apple AirPrint, Brother iPrint & Scan, Google Cloud Print, Mopria Print Service
Printing colors	Black, Cyan, Magenta, Yellow
Duplex functions	Copy, Fax, Print, Scan
Maximum duty cycle	- pages per month
Number of print cartridges	4
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	999 copies
N-in-1 copy function (N=)	2, 4
Time to first copy (black, normal)	5 s
Time to first copy (color, normal)	6 s
Package depth	561 mm
Package width	681 mm
Package height	493 mm
Package weight	26600 g
Quantity per pack	1 pc(s)
Paper input type	Paper tray
Total input capacity	650 sheets
Paper tray 1 input capacity	250 sheets
Multi-Purpose tray input capacity	100 sheets
Auto document feeder (ADF) input capacity	50 sheets
Cables included	Phone
Faxing	Color faxing
Fax memory	150 pages
Modem speed	33.6 Kbit/s
Fax forwarding to	E-mail, Fax, PC
Fax speed dialing (max numbers)	150
AC input voltage	220 - 240 V
Power consumption (off)	0.03 W
Power consumption (sleep)	0.9 W
Power consumption (copying)	29 W
Power consumption (standby)	6 W
Envelopes sizes	Com-10, DL, Monarch
Photo paper sizes	9x13, 10x15, 13x18 cm
Custom media width	105 - 297 mm
Custom media length	148 - 431.8 mm
Paper tray media types	Coated paper, Envelopes, Glossy paper, Photo paper, Plain paper, Recycled paper
ISO A-series sizes (A0...A9)	A3, A4, A5, A6
Maximum ISO A-series paper size	A3
Multi-Purpose Tray media weight	64 - 220 g/m²
Auto Document Feeder (ADF) media weight	64 - 120 g/m²
Mac operating systems supported	Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.15.3 Catalina, Mac OS X 10.9 Mavericks, Mac OS X 11.0 Big Sur
Other operating systems supported	ChromeOS
Server operating systems supported	Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Windows operating systems supported	Windows 10, Windows 7, Windows 8, Windows 8.1

Weight and Dimensions

Depth	477 mm
Width	576 mm
Height	375 mm