Brother MFC-J3940DW User Manual

Cause Action Interface
machine and the mobile
device.
There is a wireless
computer, Bluetooth
®
-
supported device,
microwave oven, or digital
cordless phone near the
Brother machine or the
mobile device.
Move other devices away from the Brother machine or the mobile
device.
Wi-Fi Direct
You have checked and tried
all of the above, but your
Brother machine still cannot
complete the Wi-Fi Direct
configuration.
• Turn your Brother machine off and back on. Then, try to
configure the Wi-Fi Direct settings again.
• If you are using your Brother machine as a client, confirm how
many devices are allowed in the current Wi-Fi Direct network,
and then check how many devices are connected.
Wi-Fi Direct
For Windows
If your wireless connection has been interrupted, and you have checked and tried all of the above, we
recommend using the Network Connection Repair Tool.
My Brother Machine Cannot Print, Scan, or PC-FAX Receive over the Network
Cause
Action Interface
Your security software
blocks your machine's
access to the network.
(The Network scanning
feature does not work. )
• Windows
Configure the third-party Security/Firewall Software to allow
Network scanning. To add port 54925 for Network scanning, type
the information below:
- In Name:
Type any description, for example Brother NetScan.
- In Port number:
Type 54925.
Type 137.
Type 161.
- In Protocol:
UDP is selected.
See the instruction manual that came with your third-party
Security/Firewall Software or contact the software manufacturer.
• Mac
(Brother iPrint&Scan)
In the Finder menu bar, click Go > Applications, and then double-
click the Brother iPrint&Scan icon. The Brother iPrint&Scan
window appears. Click the Select your Machine button, and then
follow the on-screen instructions to reselect your network machine.
Wired/Wireless
Your security software
blocks your machine's
access to the network.
(The network PC-Fax
Receive feature does not
work.)
(Windows)
Set the third-party Security/Firewall Software to allow PC-FAX Rx. To
add port 54926 for Network PC-FAX Rx, type the information below:
• In Name:
Type any description, for example Brother PC-FAX Rx.
• In Port number:
Type 54926.
• In Protocol:
UDP is selected.
See the instruction manual that came with your third-party Security/
Firewall Software or contact the software manufacturer.
Wired/Wireless
457

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