Brother MFC-9340CDW Service Manual

2-112
Confidential
4.10.5 Low-voltage power supply PCB failure
4.10.6 Modem PCB failure
Step Cause Remedy
1 Harness connection failure of
the low-voltage power supply
PCB
Check the harness connection of the
low-voltage power supply PCB and
reconnect it.
2 Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY and reset the irregular power supply
detection counter.
3 Main PCB failure Replace the main PCB ASSY.
Note:
The irregular power supply detection error (Error code 0900) occurs when there is a large
distortion of the power supply voltage supplied to the machine. In this case, if the same
power supply is used, the same error might occur again even if the low-voltage power sup-
ply PCB ASSY is replaced. For this reason, be sure to ask the user to rearrange the instal-
lation environment.
Step Cause Remedy
1 Harness connection failure of
the modem PCB.
Check the harness connection of the modem
PCB and reconnect it.
2 Modem PCB failure Replace the modem PCB ASSY.
3 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