Brother MFC-8860DN Service Manual

Confidential
9-34
(I-6) Black and blurred vertical streaks
User Check
(1) The ADF glass is dirty. Clean the ADF glass.
(2) Clean the corona wire in the drum unit.
(3) Check that the wire cleaner is at the home position.
(4) Check that the toner cartridge is not empty.
(5) The drum unit may be damaged. Install a new drum unit.
(6) The toner cartridge may be damaged. Install a new toner
cartridge.
Possible cause
Step
Check
Result
Remedy
Dirt on the
ADF glass
1 Is the ADF glass dirt? Yes Clean the ADF glass.
2 Is the corona wire dirty? Yes Clean the corona wire with the
wire cleaner.
Corona failure
3
Is the vertical block streak
about 10mm wide?
(Check if the wire cleaner
is at its home position.)
Yes Return the wire cleaner to its
home position.
Dirt in the
paper feed
system
4 Is the paper tray or feed
system on the drum unit
dirty with toner?
Yes Clean the toner off.
Scratch on the
drum
5 Is the drum surface
scratched?
Yes Replace the drum unit.
Cleaning
failure
6 Is the drum surface dirty
with toner in streaks?
Yes Replace the drum unit.
Scratch on the
heat roller
7 Is the surface of the heat
roller scratched?
Yes Replace the fuser unit.
NOTE:
• If you print he same pattern (especially vertical streaks) continuously, electrostatic charge
performance of the drum will decrease temporarily and black vertical streaks may appear on the
paper
• This problem may occur with noise
due to the corona wire being dirty. In that case, clean the
corona wire with the wire cleaner.

Brother MFC-8860DN 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)	28 ppm
Scan to	e-mail, file, image, OCR
Grayscale levels	256
Input color depth	48 bit
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
Copy speed (black, normal quality, A4)	28 cpm
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	300
Total input capacity	250 sheets
Total output capacity	150 sheets
Auto document feeder (ADF) input capacity	50 sheets
Maximum internal memory	544 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	55 dB
Display	LCD
Market positioning	Business
Paper tray media types	Envelopes, Plain paper, Recycled paper
Non-ISO print media sizes	Executive
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Font styles	66 Scaleable fonts, Letter, Gothic 16.66, OCR-A, OCR-B, 11 Barcodes
Dimensions (WxDxH)	531 x 450 x 475 mm
Networking features	10/100 Base-TX
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	scan, n
Compatible operating systems	Windows98(SE)/Me/2000/XP/NT4.0WS Mac OS 9.1-9.2/ OS X 10.2.4 +
Standard interfaces	USB 2.0
Power consumption (standby)	85 W
Power consumption (PowerSave)	15 W
Power consumption (average operating)	1104 W
Sustainability certificates	ENERGY STAR