Brother MFC-8860DN Service Manual

Confidential
9-43
(I-17) Black band
Possible cause
Step
Check
Result
Remedy
Ground
contacts
Corona failure 1 Is the wire cleaner at its
home position?
No Return the wire cleaner
to its home position.
(2)
Corona dirty 2 Is the corona wire dirty? Yes 1) Clean the corona
wire.
2) If the problem still
appears after cleaning,
replace the drum unit.
(2)
(I-18) Gray background
Possible cause
Step
Check
Result
Remedy
No
Recommend to use the specified
types of paper.
Print paper 1 Does the paper being used
meet the paper
specification (weight, etc.)
Yes Recommend to change to freshly
unpacked paper.
Toner sensor
failure
(machine side)
2 Is the error indication
displayed when the toner
cartridge and drum unit is
taken out of the machine?
(The front cover is closed.)
No Toner sensor failure. Clean the
toner sensor and check the toner
sensor connection.
Toner
cartridge
failure
3 Is the problem solved after
replacing the toner
cartridge?
Yes Replace the toner cartridge.
Yes
Replace the drum unit.
Drum unit
failure
4 Is the problem solved after
replacing the drum unit?
No
Replace the high-voltage power
supply PCB.
NOTE: The following cases increase the possibility of this problem.
• Acid paper is being used.
• The drum unit is at the end of its life.
• There is dust or paper powder.

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