Brother MFC-8370DN Service Manual

3-43
Confidential
■ Paper jam in the back cover and paper eject section
■ Paper jam in the tray 2
■ Paper jam in the Duplex unit section
Step Cause Check Result Remedy
1
Foreign object
around fuser unit
Is there a foreign object
around the fuser unit?
Yes
Remove the foreign
object.
2
Paper eject
actuator failure
Does the paper eject
actuator move smoothly?
Is it damaged?
No
Replace the paper eject
actuator.
3
Fuser cover ASSY
loose
Is the fuser cover ASSY
fitted correctly?
No
Fit the fuser cover ASSY
correctly.
4
Outer chute ASSY
loose
Is the outer chute ASSY
fitted correctly?
No
Fit the outer chute ASSY
fitted correctly.
5
Eject roller 1
malfunction
Is the eject roller 1 of the
rear chute ASSY attached
to the pinch roller
properly?
No
Replace the rear chute
ASSY.
6
Paper eject
sensor failure
Is the problem solved
after replacing the relay
rear PCB?
Yes
Replace the relay rear
PCB ASSY.
7
Main PCB failure Is the problem solved
after replacing the Main
PCB ASSY?
Yes
Replace the Main PCB
ASSY.
Step Cause Check
Result Remedy
1
LT edge actuator
catching on some
position
Does the LT edge
actuator move smoothly? No
Re-assemble the LT edge
actuator.
2
LT sensor PCB
ASSY failure
Is the problem solved
after replacing the LT
sensor PCB ASSY?
Yes
Replace the LT sensor
PCB ASSY.
3
LT solenoid failure Is the problem solved
after replacing the LT
solenoid?
Yes
Replace the LT solenoid.
Step Cause Check
Result Remedy
1
Duplex unit failure Is the problem solved
after replacing the Duplex
unit?
Yes
Replace the Duplex unit.

Brother MFC-8370DN 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
Input color depth	48 bit
Optical scanning resolution	600 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16, 25
Copy speed (black, normal quality, A4)	28 cpm
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	20 sheets
Display	LCD
Product color	Grey, White
Market positioning	Home & office
Display number of lines	2 lines
Display number of characters	16
Card reader integrated	-
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
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
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	1
Dimensions (WxDxH)	531 x 451 x 475 mm
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	Scan
Power consumption (standby)	85 W
Power consumption (average operating)	680 W
Package weight	21100 g
Digital sender	No
Maximum duty cycle	- pages per month

Weight and Dimensions

Depth	443 mm
Width	390 mm
Height	442 mm