Brother MFC-J3940DW User Manual

Error Message Cause Action
• Remove and reload the paper, and
then follow the LCD instructions.
See Related Information: Load Paper.
The paper was not inserted in the centre
position of the manual feed slot.
The paper was not inserted in the centre
position of the MP tray.
Remove the paper and reinsert it in the
centre of the manual feed slot, and then
follow the LCD instructions.
Remove the paper and reinsert it in the
centre of the MP tray, and then follow the
LCD instructions.
See Related Information: Load Paper in
the Manual Feed Slot.
See Related Information: Load Paper in
the Multi-purpose Tray (MP Tray).
The Jam Clear Cover is not closed
correctly.
Make sure the Jam Clear Cover is closed
evenly at both ends.
See Related Information: Printer Jam or
Paper Jam.
Paper dust has accumulated on the
surface of the paper pick-up rollers.
Clean the paper pick-up rollers.
See Related Information: Clean the Paper
Pick-up Rollers for Paper Tray #1 or
Clean the Paper Pick-up Rollers for Paper
Tray #2.
No Response
The connected USB device is
unresponsive.
Unplug the device from the USB direct
interface.
No Response/Busy
The number you dialled does not answer
or is busy.
Verify the number and try again.
Out of Fax Memory
The fax memory is full. Do one of the following:
• Clear the data from the memory. To
gain extra memory, you can turn off
Memory Receive.
See Related Information: Turn Off
Memory Receive.
• Print the faxes that are in the memory.
See Related Information: Print a Fax
Stored in the Machine's Memory.
Out of Memory
The machine's memory is full. If a fax-sending or copy operation is in
progress:
• Press or Quit and wait until the
other operations that are in progress
finish, and then try again.
• Press Partial Print to copy the
pages scanned so far.
• Clear the data stored in the memory.
To gain extra memory, you can turn
Memory Receive off.
See Related Information: Turn Off
Memory Receive.
• Print the faxes stored in the memory.
See Related Information: Print a Fax
Stored in the Machine's Memory.
Paper Size Mismatch
The paper size setting does not match the
size of paper in the tray.
-OR-
1. Check that the paper size you selected
on the machine's display matches the
size of the paper in the tray.
414

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