Brother MFC-8860DN Service Manual

Confidential
9-6
Error Code
(Hex)
Symptom Probable Cause Solution
Thermistor defective Replace the fuser unit.
Main PCB defective Replace the main PCB.
76
The temperature of the
fuser unit is too high.
Power supply PCB
defective
Replace the power supply
PCB.
77
The power supply is
turned off when the error
76 or 78 occurs.
--- ---
Poor connection in the
harness of the thermistor
Reinsert and adjust the
harness of the thermistor.
Halogen lamp defective
Thermistor defective
Replace the fuser unit.
Main PCB defective
Replace the main PCB.
78 The temperature of the
fuser unit does not rise.
Power supply PCB
defective
Replace the power supply
PCB.
Main PCB defective Replace the main PCB. 7A Main motor does not
synchronize with the
reference clock.
Main motor defective Replace the main motor.
7B, 7C Not used.
Cleaning the corona wire.7D Dirt in the corona wire. Corona wire is dirty.
Clean the electrodes of the
main body and drum unit.
(Refer to [4] “Location of
ground contacts” in this
Chapter.)
7E, 7F
Not used.
Regist sensor actuator
does not move smoothly.
Set the regist sensor
actuator into place.
80 At the start of FAX
message printing, the
controller detects that
paper is smaller than A4
size in width.
Main PCB defective Replace the main PCB.
81, 82 Not used.
<The solution when Error Code 76, 77, 78 shown in the machine>
The heater may be overheating when these kinds of error occur. Therefore, the heater is
programmed to turn off the power for 10 minutes after the switch is on for the safety concern when
the error occurs.
To help the heater work properly, it’s necessary to follow the operating procedures as below after
taking measures against the cause of the error.
1. Turn off the switch. Wait until the temperature of the heater lowers enough.
2. Turn on the switch.
3. Either display the maintenance mode then returns to the initial original maintenance mode, or
keep the power on for 10 minutes under inspection.

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