Brother MFC-8860DN Servise Manual

Confidential
9-21
9.2.4.3 Malfunction
When taking countermeasures for malfunctions as described in this section, check connectors for
contact failure before measuring the voltage at the specified connector pins.
(1) No AC power supplied
Possible cause
Step
Check
Result
Remedy
Supply
voltage
1 Is the correct voltage
present at the outlet?
No Inform the user that the correct
voltage is not supplied at the
outlet.
Power plug 2 Is the power cord securely
plugged into the outlet?
No Plug the power cord securely
into the outlet.
Fuse (F1, F2) 3 Is the fuse blown? Yes If the fuse blows again
immediately after replacing the
low-voltage power supply PCB,
check that there is not a short
circuit somewhere in the AC
power supply line.
Wiring 4 Unplug the power supply
plug. Is there a broken
wire between the AC input
connector of the low-
voltage power supply and
the power plug?
Yes Replace the AC power cord.
(2) No DC power supplied
Possible cause
Step
Check
Result
Remedy
AC power
supply
1 Is AC power supplied
between terminals LIVE
and NEUTRAL when the
power plug is plugged into
the outlet?
No Follow the same check
procedure of (1) “No AC power
supplied”.
Wiring, DC
load
2 Turn on the power switch.
Measure the voltages
between the terminals. Do
the measured voltage
satisfy the prescribed
valued in the table below?
Yes Turn off the power switch,
reconnect the connector and
turn the power switch on again.
If the protector circuit is
activated, check the connector,
the wiring from the connector,
and the DC load.
Low-voltage
power supply
PCB
3 Refer to the chart * 1
below.
No Replace the low-voltage power
supply PCB.
*1
PCB +lead pin - lead pin Voltage
Main CN5-4
CN5-6
CN5-7
CN5-2
CN5-8
CN5-8
Approx. 24V
Approx. 8V
Approx. 3.3V

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