Brother MFC-J6935DW Service Manual

5-18
Confidential
1.3.8 Updating of Firmware Using a USB flash memory (Maintenance mode 28)
< Function >
This function updates firmware stored in the flash ROM on the main PCB using a USB
flash memory. It enables updating of firmware without connecting the machine to a PC.
TIP: For instructions on how to update firmware when the main PCB has been
replaced or for operations using a PC, refer to Chapter 4, Section 1.3 "Install the
firmware (Maintenance mode 28)."
< Operating Procedure >
(1) Switch your PC ON and insert a USB flash memory.
(2) Create a folder named "BROTHER" in the top layer of the USB flash memory's
directory and copy the firmware file having the extension ".djf" into that folder.
Note: Before copying, check that the firmware file name having the extension ".djf"
matches your machine. The number of files having the extension ".djf" in the
"BROTHER" folder should be 100 or less.
Tip: If a firmware file not matching the machine is used, the firmware cannot be
updated, but note that you can superficially continue the operation until step
(5) below without any error.
(3) Remove the USB flash memory from the PC and insert it into the machine in the
initial stage of the maintenance mode.
(4) On the machine, press the 2 and 8 keys in this order.
The file name "********.djf" appears on the LCD.
(5) Press the
▲ or ▼ key to select the target firmware file.
(6) Press the Mono Start key.
"Program Updating" appears on the LCD.
Note: Never remove the USB flash memory from the machine when updating is in
progress.
(7) Updating will complete in a few minutes, and the machine automatically restarts
and returns to the standby state.
Remove the USB flash memory from the machine and store it in a safe place.
Note: If any of the error messages listed below appears, press the X key, and the
machine returns to the initial stage of the maintenance mode.
Error Message Cause
Card is used
The USB flash memory is being used by another
operation.
Insert Card
No USB flash memory is inserted.
No file
No file with the djf extension. / No "BROTHER" folder
exists.
Card Error
USB flash memory defective

Brother MFC-J6935DW Specifications

General

Type	all in one, copier, fax, scanner
Color	gray
Touch Screen	yes
Display Size	3.7 inches
Tray Capacity	500
Output Tray Capacity	100
Automatic Document Feeder Capacity	50 sheets
Paper Size	letter, ledger, executive, envelope (com-10, dl envelope, monarch), a3, a4, a5, a6 photo 4"x6", 3.5"x5", 5"x7", 5"x8", manual by-pass: 3.5" x 5" to 11" x 17"
Printing Method	color
Color Print Speed	20 pages per minute
Mono Print Speed	22 pages per minute
First Page Print Time	6 seconds
Print Resolution Mono	up to 4800 x 1200
Print Resolution Color	up to 4800 x 1200
Two-Sided Printing	no
Maximum Number of Pages Per Month	up to 30, 000
Photo Printing	yes
Scanner Type	flatbed
Scan Resolution	up to 19200 x 19200
Duplex Scan	yes
Fax Function	yes
Cartridges	lc3029bk/c/m/y inkvestment super high-yield cartridges
Number Of Cartridges	4
Number of Ink Tanks	0
Internal Memory	yes
Memory Card	no
Network	wired, wireless
Connectivity	apple airprint, brother iprint&scan, ethernet, google cloud print, mopria print service, nfc, usb, wi-fi direct
OS Compatibility	windows 10, 8.1, 8, 7, vista; windows server 2012, 2012 r2, 2008, 2008 r2; os x v 10.11.x, 10.10.x, 10.9.5.x; hdd space for drivers and apps
Mobile Devices Connection	yes

Weight and Dimensions

Depth	22.7 inches
Height	14.7 inches
Width	22.6 inches
Net Weight	51.8 pounds