Brother MFC-J3940DW User Manual

Error Message Cause Action
See Related Information: Print the
Network Configuration Report.
Touchscreen Init.
Failed
The touchscreen was pressed before the
power on initialisation was completed.
Make sure nothing is touching or resting
on the touchscreen, especially when
plugging the machine in.
Debris may be stuck between the lower
part of the touchscreen and its frame.
Insert a piece of stiff paper between the
lower part of the touchscreen and its
frame and slide it back and forth to push
out the debris.
Tray Settings
Tray 1 Settings
Tray 2 Settings
MP Tray Settings
This message is displayed when the
setting to confirm the paper type and size
is enabled.
To not display this confirmation message,
change the setting to Off.
See Related Information: Change the
Check Paper Setting.
Unusable Device
Disconnect device
from front connector
& turn machine off &
then on
A broken device is connected to the USB
direct interface.
Unplug the device from the USB direct
interface. Turn the machine off and then
on again.
Unusable Device
Please disconnect USB
device.
A USB device or USB flash drive that is
not supported has been connected to the
USB direct interface.
Unplug the device from the USB direct
interface.
Wrong Tray Settings
The machine's paper size settings and
tray select settings do not match the size
of paper in the tray you are using.
Follow the instructions on the touchscreen
and try to print again.
Configure the paper size setting for the
tray according to the LCD instructions.
Related Information
• Troubleshooting
• Transfer Your Faxes or Fax Journal Report
Related Topics:
• Touchscreen LCD Overview
• Print the Network Configuration Report
• Replace the Ink Cartridges
• Telephone Line Interference/VoIP
• Load Documents in the Automatic Document Feeder (ADF)
• Document Jams
• Caller ID
• Load Paper
• Load Paper in the Manual Feed Slot
• Printer Jam or Paper Jam
• Remove Paper Scraps
• Clean the Paper Pick-up Rollers for Paper Tray #1
• Clean the Paper Pick-up Rollers for Paper Tray #2
• Turn Off Memory Receive
• Print a Fax Stored in the Machine's Memory
• Print Settings (Windows)
• Paper Handling and Printing Problems
• Change the Check Paper Setting
416

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