Brother MFC-9340CDW Service Manual

2-111
Confidential
4.10 Troubleshooting on the PCB
4.10.1 Main PCB failure
<User Check>
- Turn OFF and ON the power switch.
- Install the latest firmware.
4.10.2 Full memory
Memory is full.
<User Check>
-Press Cancel key and delete the accumulated data.
- Reduce the amount of data or lower the resolution.
4.10.3 Print overrun
Data deployment is too late.
<User Check>
- Reduce complication of the data or lower the resolution.
4.10.4 High-voltage power supply PCB failure
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Harness connection failure
between the high-voltage
power supply PCB and main
PCB ASSY
Check the harness connection between the
high-voltage power supply PCB and main
PCB ASSY, and reconnect it.
2 Contact failure of electrode
terminal(s) of high-voltage
power supply PCB
Clean the each electrode terminal of
high-voltage power supply PCB.
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4 Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY.
5 Main PCB failure Replace the main PCB ASSY.

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