EasyManuals Logo

Brother MFC-J6720DW Service Manual

Brother MFC-J6720DW
365 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #24 background imageLoading...
Page #24 background image
xxi
Confidential
Precautions for Troubleshooting and/or Disassembly/Assembly
Be sure to observe the following warnings and precautions to prevent any secondary troubles
from happening by mishandling the machine during troubleshooting and/or disassembly/
assembly.
Precautions
Be sure to observe the following to prevent any secondary troubles from happening during
troubleshooting and/or disassembly/assembly.
(1) Power codes must be removed from their outlets before starting any removal of covers
and PCBs, adjustments and conductivity test using a tester.
(2) Be careful not to lose screws, washers, or other parts.
(3) Apply grease to the points specified in Chapter 3.
(4) When using soldering irons and other heat-generating tools, take care not to damage the
plastic parts such as wires, PCBs, and covers.
(5) When disconnecting the connectors, hold the connector housings. Do not pull the lead wires.
(6) After disconnecting flat cables, check that each cable is not damaged at its end or
shortcircuited.
(7) When connecting flat cables, do not insert them at an angle. After insertion, check again
that the cables are not at an angle.
(8) When connecting or disconnecting harnesses, hold the connector bodies not the cables.
If the connector has a lock, always unlock it.
(9) After repairs, check not only the repaired portion but also that the harnesses are routed
properly. Also check that the other related portions function properly.
(10) 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 a
conductive mat.
Also take care not to touch the conductor sections on the flat cables.
(11) Once the head/carriage unit prints, it will start head locking operation after five seconds
from the end of printing. The head locking operation will take five to ten seconds. NEVER
unplug the power cord before the machine completes the head locking operation; doing
so will make the head/carriage unit unusable and require replacement with a new head/
carriage unit. When you receive the machine from the user or when you pack it for
sending it back to the user, check the head locking state.
(12) If ink gets on your skin or gets into your eyes or mouth, you need the following treatment.
- If ink gets on your skin, wash it off immediately with soap and water.
- If ink gets into your eyes, flush them immediately and thoroughly with water. If left
untreated, the eyes may become bloodshot or mildly inflamed. If you feel any discomfort,
consult a doctor immediately.
- If ink gets into your mouth, immediately spit it out and consult a doctor.
(13) Be sure to observe the warnings.
(14) After completion of reassembly, it is recommended that the dielectric voltage withstand
test and continuity test be conducted.
(15) After repairing the defective section, be sure to check again if the repaired section works
correctly.

Table of Contents

Other manuals for Brother MFC-J6720DW

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Brother MFC-J6720DW and is the answer not in the manual?

Brother MFC-J6720DW Specifications

General IconGeneral
Duplex printingYes
Print technologyInkjet
Maximum resolution6000 x 1200 DPI
Duplex printing modeAuto
Print speed (ISO/IEC 24734) mono22 ipm
Print speed (ISO/IEC 24734) color20 ipm
Print speed (black, normal quality, A4/US Letter)35 ppm
Print speed (color, normal quality, A4/US Letter)27 ppm
Copier resize25 - 400 %
Maximum copy resolution1200 x 2400 DPI
Maximum number of copies99 copies
N-in-1 copy function (N=)2, 4
Copy speed (black, normal quality, A4)23 cpm
Copy speed (color, normal quality, A4)20 cpm
Scan toCIFS, E-mail, E-mail Server, Fax, File, FTP, Image, Memory Card, OCR, USB
Scan driversICA, TWAIN, WIA
Scanner typeFlatbed & ADF scanner
Grayscale levels256
Input color depth48 bit
Maximum scan area297 x 432 mm
Output color depth24 bit
Image formats supportedBMP, JPG, PCX, PNG, TIF
Maximum scan resolution19200 x 19200 DPI
Document formats supportedHTM, PDF
Optical scanning resolution2400 x 2400 DPI
FaxingColor faxing
Fax memory200 pages
Modem speed33.6 Kbit/s
Fax resolution (black)203 x 196 DPI
Fax transmission speed3 sec/page
Digital senderNo
Printing colorsBlack, Cyan, Magenta, Yellow
Maximum duty cycle26000 pages per month
Recommended duty cycle250 - 1500 pages per month
Number of print cartridges4
Page description languagesGDI
Paper input typePaper tray
Total input capacity500 sheets
Total output capacity50 sheets
Total number of input trays2
Multi-Purpose tray input capacity1 sheets
Auto document feeder (ADF) input capacity35 sheets
Envelopes sizes10, C5, DL, Monarch
Photo paper sizes10x15 cm
Custom media width89 - 297 mm
Maximum print size210 x 297 mm
Custom media length127 - 431.8 mm
Paper tray media typesCoated paper, Glossy paper, Plain paper, Transparencies
Non-ISO print media sizes2L, Executive (184 x 267mm), Folio (media size), Index card, L, Ledger (media size), Letter (media size)
ISO A-series sizes (A0...A9)A3, A4, A5, A6
Photo paper sizes (imperial)4x6 \
Borderless printing media sizesLedger, 4x6, 10x15, 2L, A3, A4, A6, Index card, L, Letter
Maximum ISO A-series paper sizeA4
DisplayLCD
Control typeTouch
Product colorBlack, White
Display diagonal2.7 \
Market positioningBusiness
Standard interfacesEthernet, USB 1.1, USB 2.0, Wireless LAN
USB 2.0 ports quantity1
Fax compatibilityITU-T G3
Wi-Fi standards802.11b, 802.11g, Wi-Fi 4 (802.11n)
Security algorithms128-bit WEP, 64-bit WEP, SSID, TKIP, WPA-AES, WPA-PSK, WPA-TKIP, WPA2-AES, WPA2-PSK
Mobile printing technologiesApple AirPrint, Brother iPrint & Scan, Google Cloud Print
Compatible memory cardsmicroSD (TransFlash), microSDHC, miniSD, miniSDHC, MMC, MMC Mobile, MMC+, MS Duo, MS Micro (M2), MS PRO Duo, SD, SDHC, SDXC
Sound pressure level (printing)50 dB
AC input frequency50 - 60 Hz
Power consumption (off)0.04 W
Power consumption (standby)4.5 W
Power consumption (PowerSave)1.5 W
Power consumption (average operating)28 W
Package depth497.84 mm
Package width657.86 mm
Package height414 mm
Package weight19912 g
Storage temperature (T-T)10 - 35 °C
Operating relative humidity (H-H)20 - 80 %
Mac operating systems supportedMac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion
Windows operating systems supportedWindows 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 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
Sustainability certificatesBlue Angel, ENERGY STAR
Weight and Dimensions IconWeight and Dimensions
Depth433 mm
Width553 mm
Height310 mm

Related product manuals