Brother MFC-9330CDW Service Manual

2-109
Confidential
4.8 Troubleshooting of the Fuser Unit
4.8.1 Fuser unit failure
Step Cause Remedy
1 Harness connection failure
between the connector of the
fuser unit and eject sensor
PCB
Check the harness connection between the
connector of the fuser unit and eject sensor
PCB, and reconnect it.
2 Harness connection failure
between the connector of the
fuser unit and low-voltage
power supply PCB
Check the harness connection between the
connector of the fuser unit and low-voltage
power supply PCB, and reconnect it.
3 Harness connection failure of
the eject sensor PCB
Check the harness connection of the eject
sensor PCB and reconnect it.
4 Eject sensor PCB failure
Refer to "1.4.10 Operational check of sensors"
in Chapter 5 and check the operations of
sensors.
If sensor operation failure occurs, replace the
eject sensor PCB ASSY.
5 Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY.
6 Fuser unit failure Replace the fuser unit.
7 Main PCB failure Replace the main PCB ASSY.
Note:
- Turn the power OFF and then ON again. After the machine is left as it is for about 10
minutes, this problem may be resolved.
- If test print is performed in maintenance mode for service personnel, the machine may
recover from the error. However, note that if this operation is performed while the heater
has not cooled down, the fuser unit may melt.

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