Brother MFC-8380DN Service Manual

3-59
Confidential
■ Black spots
■ Black band
<User Check>
- Damp (wet) paper might be used. Try to change to freshly unpacked
paper.
- Toner may be empty. Replace the toner cartridge with a new one.
- If the problem is not solved after printing a few pages, the drum unit
may have glue from label stock on the exposure drum surface.
Refer to the previous page, and wipe it off gently with a cotton swab.
- The drum unit may be damaged. Replace the drum unit with a new
one.
Step Cause Check
Result Remedy
1
Toner attached
on the develop
roller
Are the black spots at
42.5 mm (develop roller
circumference)
intervals?
Yes
This problem will
disappear by printing
approximate 10 pages. If
the same problem occurs,
replace the toner cartridge.
2
Dirt on the
exposure drum
Are the black spots at
94.2 mm (exposure
drum circumference)
intervals?
Yes
Clean the exposure drum
with the drum cleaning kit.
3
Drum unit
connection
failure
Are the electrodes on
the drum unit and
machine body dirty?
Yes
Clean both electrodes
(Refer to Fig. 3-2, Fig. 3-3.)
4
Scratch and Dirt
on the exposure
drum
Does not the black spots
disappear by cleaning
(procedure 2)?
No
Replace the drum unit.
5
Scratch and Dirt
on the heat roller
Are the black spots at
78.5 mm (heat roller
circumference)
intervals?
Yes
Replace the fuser unit.
6
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
7
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
<User Check>
- Clean the inside of the machine and the corona wire in the drum
unit. If the same problem occurs after cleaning, replace the drum
unit with a new one.
- The paper tray ground terminal provided in the machine body may
be dirty. Clean the contact with a dry cloth.

Brother MFC-8380DN Specifications

General

Duplex printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	30 ppm
Scan to	e-mail, FTP, OCR, USB
Input color depth	48 bit
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	4, 9, 16, 25
Copy speed (black, normal quality, A4)	30 cpm
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Total input capacity	500 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	20 sheets
Internal memory	64 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
Display	LCD
Market positioning	Home & office
Custom media sizes	(69.8 - 216) x (116 - 406.4) mm
Dimensions (WxDxH)	531 x 451 x 475 mm
Networking features	10/100 Base-TX
All-in-one functions	Copy, Fax, Scan
Maximum internal memory	0.576 GB
Color all-in-one functions	scan, n
Compatible operating systems	Linux, Windows 2000, XP/2003, Vista, XP, Mac OS X 10.3.9
Maximum print size	216 x 297 mm
Media weight (tray 1)	60 - 105 gsm
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper, Transparencies
Non-ISO print media sizes	Executive
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Supported network protocols (IPv4)	IPv4, IPv6
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	1
Power consumption (standby)	85 W
Power consumption (PowerSave)	19 W
Power consumption (average operating)	680 W
Package weight	21100 g