Brother MFC-9330CDW Service Manual

2-91
Confidential
■ Poor fixing
■ Completely blank
<User Check>
- Check the machine’s environment. High temperature and high
humidity or low temperature and low humidity conditions can cause this
problem.
- Clean the corona wire of each drum unit for all four colors.
- Replace the drum unit or toner cartridge with a new one.
- Replace the belt unit with a new one.
- Clean the surface of the LED ASSY.
Step Cause Remedy
1 Fuser unit failure Replace the fuser unit.
2 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
3 Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY.
4 LED ASSY failure Replace the LED ASSY.
5 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Clean the corona wire of each drum unit for all four colors.
- Replace the drum unit or toner cartridge with a new one.
- Install the latest firmware.
Step Cause Remedy
1 Dirt on the GRID electrodes of
the main body or drum unit
Clean the GRID electrodes of the main body
or drum unit. (Refer to fig. 2-7 (P2-50) and
fig. 2-8 (P2-51))
2 LED flat cable connection
failure
Check the LED flat cable connection and
reconnect it.
3 LED ASSY installation failure Re-assemble the LED ASSY.
4 LED flat cable failure Replace the LED flat cable.
5 LED ASSY failure Replace the LED ASSY.
6 LED control PCB failure Replace the LED control PCB ASSY.
7 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
8 Main PCB failure Replace the main PCB ASSY.

Brother MFC-9330CDW Specifications

Print Specifications

print speed black	up to 23 ppm
print speed color	up to 23 ppm
print resolution	up to 600 x 2400 dpi

Copy Specifications

copy speed black	up to 23 cpm
copy speed color	up to 23 cpm
copy resolution	600 x 600 dpi

Scan Specifications

scan resolution optical	1200 x 2400 dpi
scan resolution interpolated	19200 x 19200 dpi
document glass size	8.5” x 11.7”

Fax Specifications

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

Paper Handling

auto document feeder capacity	up to 35 pages
paper size maximum	up to 8.5” x 14” (legal)
standard paper capacity	250 sheets

Power and Energy

deep sleep mode power consumption	<2W
automatic duplex printing	Yes
energy star qualified	Yes