Brother MFC-B7715DW User Manual

2-1
Confidential
CHAPTER 2 ERROR INDICATIONS AND
TROUBLESHOOTING
1. INTRODUCTION
Troubleshooting is the countermeasure procedures that the service personnel should follow if
an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible
troubles which may occur in future and determine the troubleshooting procedures, so this
chapter covers some sample troubles. However, those samples will help the service personnel
pinpoint and repair other defective elements.
1.1 Precautions
Be sure to observe and follow all the precautions to prevent any secondary problems from
happening during troubleshooting.
(1) Always turn OFF the power and unplug the power cable before removing any covers or
PCBs, adjusting the machine and so on. If you need to take voltage measurements with the
power switched on, take the greatest of care not to receive an electric shock.
(2) When connecting or disconnecting cable connectors, make sure that you hold the
connector body and not the cables.
(3) Static electricity charged in your body may damage electronic parts. Before handling the
PCBs, touch a metal portion of the machine to discharge static electricity charged in your
body. When transporting PCBs, be sure to wrap them in conductive sheets.
When replacing the PCBs, put on a grounding wrist band and perform the job on an
antistatic mat. Also take care not to touch the conductor sections on the flat cables.
(4) Follow the warning by all means.
Warning
Hazard labels as shown below are attached to the machine. Fully understand the
descriptions on the hazard labels and observe them during troubleshooting.
Take extreme care not to remove or damage the hazard labels.

Brother MFC-B7715DW 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
Warm-up time (from sleep mode)	9 s
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	34 ppm
Duplex print speed (black, normal quality, A4/US Letter)	16 ppm
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4
Copy speed (black, normal quality, A4)	34 cpm
Scan to	E-mail, FTP, File, Image, OCR
Scan drivers	SANE, TWAIN, WIA
Grayscale levels	256
Output color depth	24 bit
Scan speed (black)	22.5 ppm
Scan speed (color)	7.5 ppm
Output grayscale depth	8 bit
Maximum scan resolution	19200 x 19200 DPI
Faxing	Mono faxing
Fax memory	400 pages
Fax coding methods	JBIG
Fax transmission speed	33.6 sec/page
Digital sender	No
Printing colors	Black
Maximum duty cycle	15000 pages per month
Number of PostScript fonts	66
Number of print cartridges	1
Page description languages	BR-Script 3, PCL 6, PDF 1.7
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	120 sheets
Multi-Purpose tray input capacity	1 sheets
Auto document feeder (ADF) input capacity	50 sheets
Custom media width	76.2 - 215.9 mm
Custom media length	127 - 355.6 mm
Paper tray media types	Plain paper
Paper tray media weight	60 - 163 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
Multi-purpose tray media types	Executive, Legal, Letter
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 230 g/m²
Auto Document Feeder (ADF) media weight	64 - 105 g/m²
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology	10/100Base-T(X)
Security algorithms	64-bit WEP, 128-bit WEP, WPA-PSK, WPA2-PSK, WPS
Ethernet LAN data rates	10, 100 Mbit/s
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/NetBIOSnameresolution, DNS Resolver, mDNS, LLMNR responder, LPR/LPD, CustomRaw Port/Port9100, SMTP, IPP/IPPS, FTP, SNMPv1/v2c/v3, HTTP/HTTPS, TFTP, ICMP, Web Services, SNTP
Supported network protocols (IPv6)	NDP, RA, DNS resolver, mDNS, LLMNR responder, LPR/LPD, CustomRaw Port/Port9100, IPP/IPPS, SMTP, FTP, SNMPv1/v2c/v3, HTTP/ HTTPS, TFTP, ICMPv6, SNTP, Web Services
Internal memory	128 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	49 dB
Sound pressure level (quiet mode)	44 dB
Product color	Gray
Market positioning	Home & office
Display number of lines	2 lines
Mac operating systems supported	Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina
Server operating systems supported	Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Windows operating systems supported	Windows 10, Windows 7, Windows 8, Windows 8.1
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (sleep)	6.2 W
Power consumption (standby)	42 W
Power consumption (printing)	475 W
Power consumption (average operating)	- W
Energy Star Typical Electricity Consumption (TEC)	1348 kWh/week
Package depth	517 mm
Package width	580 mm
Package height	434 mm
Package weight	15100 g
Quantity per pack	1 pc(s)
Sustainability certificates	RoHS, ENERGY STAR

Weight and Dimensions

Depth	398.5 mm
Width	410 mm
Height	318.5 mm
Weight	12000 g