Brother MFC-9340CDW Service Manual

2-107
Confidential
4.7 Troubleshooting of the Toner Cartridge and Drum Unit
4.7.1 New toner not detected
<User Check>
- Be sure to install a new toner cartridge.
4.7.2 Cartridge error (Toner cartridge not detected)
4.7.3 Toner low
(Even though a new toner cartridge is set, Toner low warning remains)
Step Cause Remedy
1 Harness connection failure of
the high-voltage power supply
PCB
Check the high-voltage power supply PCB
harness connection and reconnect it.
2 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 During new toner cartridge
detection, power is turned
OFF or the joint cover ASSY
is opened
Perform toner manual reset. (Refer to "2.1
Toner Manual Reset Function" in Chapter 5.)
2 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Harness connection failure of
the high-voltage power supply
PCB
Check the high-voltage power supply PCB
harness connection and reconnect it.
2 High-voltage power supply
PCB failure
Replace the high-voltage power supply 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