Brother MFC-J3940DW User Manual

Difficulties Suggestions
One or more ink cartridges have reached the end of their life.
See Related Information: Replace the Ink Cartridges.
If old, unprinted data remains in the printer driver spooler, it will prevent new print
jobs from printing. Open the printer icon and delete all data as follows:
• Windows 10, Windows Server 2016, and Windows Server 2019
Click > Windows System > Control Panel. In the Hardware and Sound
group, click View devices and printers > Printers.
• Windows 8.1
Move your mouse to the lower right corner of your desktop. When the menu
bar appears, click Settings > Control Panel. In the Hardware and Sound
group, click View devices and printers > Printers.
• Windows Server 2012 R2
Click Control Panel on the Start screen. In the Hardware group, click View
devices and printers > Printers.
• Windows Server 2012
Move your mouse to the lower right corner of your desktop. When the menu
bar appears, click Settings > Control Panel. In the Hardware group, click
View devices and printers > Printers.
• Windows 7 and Windows Server 2008 R2
Click /Start > Devices and Printers > Printers and Faxes.
• Windows Server 2008
Click (Start) > Control Panel > Hardware and Sound > Printers.
• Mac
Click the System Preferences > Printers & Scanners.
The headers or footers appear
when the document is displayed
on the screen but do not appear
when the document is printed.
There is an unprintable area on the top and bottom of the page. Adjust the top
and bottom margins in your document to allow for this.
See Related Information: Unprintable Area.
Cannot perform ‘Page Layout’
printing.
(Windows )
Check that the paper size setting in the application and in the printer driver are
the same.
Print speed is too slow. (Windows)
Try changing the printer driver setting. The highest resolution needs longer data
processing, sending, and printing time. Try the other quality settings in the printer
driver as follows:
In the printer driver, clear the Colour Enhancement check box on the Advanced
tab.
Turn the Borderless feature off. Borderless printing is slower than normal printing.
See Related Information: Print Settings (Windows).
Turn the Quiet Mode setting off. Print speed is slower in Quiet Mode. See
Related Information: Reduce Printing Noise.
Make sure the Media Type setting in the printer drivers, your application, or the
Paper Type setting on the machine matches the type of paper you are using.
See Related Information: Change the Paper Size and Paper Type.
See Related Information: Print Settings (Windows).
Print Quality Difficulties
Difficulties
Suggestions
Poor print quality Check the print quality.
440

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