Brother MFC-9330CDW Service Manual

2-98
Confidential
■ One color spots or dirt
<User Check>
- Check if damp paper is used.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- Replace the drum unit or toner cartridge with a new one.
<Diameters of rollers and pitches on images>
Step Cause Remedy
1 Scratch and dirt on fuser unit Replace the fuser unit.
2 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Note:
Image defects which occur periodically may be caused by a failure of the rollers.
Use the diameters of the rollers or the pitches which appear in images shown in the table
below to identify the cause of the problem.
No. Part name Diameter
The pitch which
appears in the image
1 Develop roller
Ø 13 mm 24.7 mm
2 Exposure drum
Ø 30 mm 94.2 mm
3 Heat roller of the fuser unit
Ø 21 mm 66 mm
4 Pressure roller of the fuser unit
Ø 25 mm 78.5 mm

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