Brother MFC-L6900DW User Guide

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Improve the Print Quality
If you have a print quality problem, print a test page first. If the printout looks good, the problem is probably not
the machine. Check the interface cable connections and try printing a different document. If the printout or test
page printed from the machine has a quality problem, check the examples of poor print quality in the table and
follow the recommendations.
IMPORTANT
Using non-Brother supplies may affect the print quality, hardware performance, and machine reliability.
1. To get the best print quality, we suggest using recommended print media. Make sure you use paper that
meets our specifications.
2. Check that the toner cartridge and drum unit are installed correctly.
Examples of poor print quality
Recommendation
Faint
• If the machine indicates Replace Toner status, install a
new toner cartridge.
• Check the machine’s environment. Conditions such as
humidity, high temperatures, and so on, may cause
this print fault.
• If the whole page is too light, Toner Save may be
turned on. Turn off Toner Save mode in the machine's
menu settings or the printer driver.
• Clean the drum unit.
• Clean the corona wire on the drum unit.
• Replace the toner cartridge with a new toner cartridge.
• Replace the drum unit with a new drum unit.
Grey background
• Check the machine’s environment. Conditions such as
high temperatures and high humidity can increase the
amount of background shading.
• Clean the drum unit.
• Replace the toner cartridge with a new toner cartridge.
• Replace the drum unit with a new drum unit.
Ghost
• Check the machine’s environment. Conditions such as
low humidity and low temperatures may cause this
print quality problem.
• Select the appropriate media type in the printer driver.
• Clean the drum unit.
• Replace the drum unit with a new drum unit.
• Replace the toner cartridge with a new toner cartridge.
• The fuser unit may be contaminated.
Contact Brother customer service.
Toner specks
• Make sure the media type setting in the driver
matches the type of paper you are using.
• Clean the drum unit.
• The toner cartridge may be damaged.
Replace the toner cartridge with a new toner cartridge.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• The fuser unit may be contaminated.
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Brother MFC-L6900DW Specifications

General

N-up printing	2, 4, 9, 16, 25
Secure printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Duplex printing mode	Auto/Manual
Time to first page (black, normal)	7.5 s
Print speed (black, normal quality, A4/US Letter)	50 ppm
Scan to	E-mail, E-mail Server, FTP, File, Image, OCR, USB
Scan drivers	ICA, ISIS, SANE, TWAIN, WIA
Scanner type	Flatbed & ADF scanner
Grayscale levels	256
Input color depth	48 bit
Maximum scan area	A4 (210 x 297) mm
Output color depth	24 bit
Scan speed (black)	24 inch/min
Scan speed (color)	20 inch/min
Image formats supported	JPG
Maximum scan resolution	19200 x 19200 DPI
Duplex scan speed (black)	17 ppm
Document formats supported	PDF
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4
Time to first copy (black, normal)	9.5 s
Copy speed (black, normal quality, A4)	50 cpm
Faxing	Mono faxing
Modem speed	33.6 Kbit/s
Digital sender	No
Printing colors	Black
Maximum duty cycle	150000 pages per month
Recommended duty cycle	0 - 10000 pages per month
Number of print cartridges	1
Page description languages	BR-Script 3, Epson FX, IBM ProPrinter, Microsoft XPS, PCL 6, PDF 1.7
Display	LCD
Control type	Touch
Product color	White
Display diagonal	4.8 \
Market positioning	Business
Email protocols	SMTP
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology	10/100/1000Base-T(X)
Security algorithms	64-bit WEP, 128-bit WEP, 802.1x RADIUS, EAP-FAST, EAP-MD5, EAP-PEAP, EAP-TLS, EAP-TTLS, HTTPS, IPPS, IPSEC, LEAP, PEAP, SMTP-AUTH, SNMP, SSL/TLS, WPA-PSK, WPA2-PSK
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Online services supported	Box, Dropbox, Evernote, Facebook, Flickr, Google Drive, OneDrive, OneNote, Picasa
Mobile printing technologies	Apple AirPrint, Brother iPrint & Scan, Google Cloud Print, Mopria Print Service
Supported network protocols (IPv4)	ARP, RARP, BOOTP, DHCP, APIPA(Auto IP), WINS/NetBIOS name resolution, DNS Resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, POP3, SMTP Client, IPP/IPPS, FTP Client and Server, CIFS Client, TELNET Server, SNMPv1/v2c/v3, HTTP/HTTPS server, TFTP client and server, ICMP, Web Services (Print/Scan), SNTP Client, LDAP, IMAP4
Supported network protocols (IPv6)	NDP, RA, DNS resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP/IPPS, POP3*, SMTP Client, FTP Client and Server, CIFS Client, TELNET Server, SNMPv1/v2c, HTTP/HTTPS server, TFTP client and server, ICMPv6, SNTP Client, LDAP, Web Services (Print/Scan), IMAP4
Processor family	ARM Cortex
Sound power level (standby)	35 dB
Sound pressure level (copying)	57 dB
Sound pressure level (quiet mode)	53 dB
Mac operating systems supported	Mac OS X 10.0 Cheetah, Mac OS X 10.1 Puma, Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Mobile operating systems supported	Windows Phone, Windows RT
Server operating systems supported	Windows Server 2003, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Windows operating systems supported	Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 2000, Windows 2000 Professional, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Standard interfaces	Ethernet, NFC, USB 2.0, Wireless LAN
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Package depth	526 mm
Package width	599 mm
Package height	762 mm
Package weight	23800 g
Power consumption (off)	1.6 W
Power consumption (sleep)	8 W
Power consumption (standby)	34 W
Power consumption (PowerSave)	390 W
Power consumption (average operating)	805 W
Energy Star Typical Electricity Consumption (TEC)	2.493 kWh/week
Sustainability certificates	Nordic Swan Ecolabel, Blue Angel, ENERGY STAR
Custom media width	76.2 - 215.9 mm
Custom media length	127 - 355.6 mm
Paper tray media types	Plain paper, Recycled paper, Thick paper, Thin paper
Paper tray media weight	60 - 120 g/m²
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size), Letter (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
Multi-purpose tray media types	Bond paper, Envelopes, Labels, Letterhead, Plain paper, Recycled paper, Thick paper, Thicker paper, Thin paper
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 200 g/m²
Auto Document Feeder (ADF) media weight	64 - 90 g/m²
Paper input type	Paper tray
Total input capacity	520 sheets
Total output capacity	250 sheets
Certification	GS Mark
Harmonized System (HS) code	84433100

Weight and Dimensions

Depth	427 mm
Width	495 mm
Height	518 mm