Brother MFC-9340CDW Service Manual

4-8
Confidential
3. IF YOU REPLACE THE LOW-VOLTAGE
POWER SUPPLY PCB ASSY
■ What to do when replacing the low-voltage power supply PCB ASSY
- Reset of Irregular Power Supply Detection Counter
■ What you need to prepare
(1) A USB cable
(2) Computer (Window
®
XP or later)
Create a temporary folder in the C drive.
(3) The download utility (FILEDG32.EXE)
Copy it into the temporary folder that has been created in the C drive.
(4) The Brother maintenance USB printer driver (MaintenanceDriver.zip)
If the maintenance printer driver is not installed, copy it into the temporary folder created
in the C drive and decompress and expand the file. Refer to APPENDIX 3 INSTALLING
THE MAINTENANCE PRINTER DRIVER to install the driver.
(5) Irregular power supply detection counter PJL file (SQWAVE.PJL).
3.1 Reset of Irregular Power Supply Detection Counter
The irregular power supply detection counter is counted up when the machine detects
irregular power supply. When the counter reaches the limit and the irregular power supply
detection error is displayed, replace the low-voltage power supply PCB ASSY which may have
been damaged by repeated irregular power supply and reset the irregular power supply
detection counter.
In this case, if the same power supply is used, the same error might occur again even if the
low-voltage power supply PCB ASSY is replaced. For this reason, be sure to ask the user to
rearrange the installation environment.
(1) Enter the maintenance mode.
(Refer to "1.1 How to Enter the Maintenance Mode" in chapter 5.)
(2) Connect the computer to the machine with the USB cable.
(3) Double-click the "FILEDG32.EXE" to start. Select the "Brother Maintenance USB Printer".
(4) Drag and drop SQWAVE.PJL on the "Brother Maintenance USB Printer" icon.
(5) Turn OFF the power of the machine.

Brother MFC-9340CDW Specifications

Printing Specifications

print speed (black)	up to 23 ppm
print speed (color)	up to 23 ppm
print resolution	up to 600 x 2400 dpi
automatic duplex printing	Yes

Copying Specifications

copy speed (black)	up to 23 cpm
copy speed (color)	up to 23 cpm
copy resolution	600 x 600 dpi
copy reduction/enlargement	25% - 400% in 1% increments

Scanning Specifications

scanner type	Color Flatbed with ADF
document glass size	8.5” x 11.7”
scan resolution (optical)	1200 x 2400 dpi
scan resolution (interpolated)	19200 x 19200 dpi

Fax Specifications

fax modem	33.6k bps
fax page memory	up to 500 pages
speed dial locations	200

Memory and Interfaces

memory (standard/max)	192MB / 192MB
standard interfaces	Wireless 802.11b/g/n, Ethernet, Hi-Speed USB 2.0
usb direct interface	Yes

Supplies and Accessories

black toner cartridge yield	2, 500 pages
cyan toner cartridge yield (standard)	1, 400 pages
magenta toner cartridge yield (standard)	1, 400 pages
yellow toner cartridge yield (standard)	1, 400 pages
cyan toner cartridge yield (high capacity)	2, 200 pages
magenta toner cartridge yield (high capacity)	2, 200 pages
yellow toner cartridge yield (high capacity)	2, 200 pages
drum unit yield	15, 000 pages
belt unit yield	50, 000 pages
waste toner box yield	50, 000 pages
multi-purpose paper	Letter, 500 sheets