Brother MFC-9420CN Service Manual

Confidential
9-8
Error Code
(Hex)
Symptom Probable Cause Solution
Toner cartridge
defective
Replace the toner
cartridge
Toner retract solenoid
assy defective
Replace the toner retract
solenoid assy
3B Black switching solenoid error
Engine controller board
defective
Replace the engine
controller board.
Transfer unit
defective
Replace the transfer unit
Marker sensor defective Replace the marker sensor
3C Transfer belt error
Engine controller board
defective
Replace the engine
controller board.
Transfer roller solenoid
defective
Replace the transfer roller
solenoid
3D
Transfer roller solenoid error.
Engine controller board
defective
Replace the engine
controller board.
Transfer belt cleaning
solenoid defective
Replace the transfer belt
cleaning solenoid
3E
Transfer belt cleaning solenoid
error.
Engine controller board
defective
Replace the engine
controller board.
Fuser unit clutch
defective
Replace the fuser unit
clutch
3F
Fuser unit clutch error.
Engine controller board
defective
Replace the engine
controller board.
Belt marker sensor
defective
Replace the belt marker
sensor
40 Belt marker sense error
Engine controller board
defective
Replace the engine
controller board.
LV Power Supply PCB
defective
Replace the LV Power
Supply PCB
41 HVU connection error
Engine controller board
defective
Replace the engine
controller board.
Toner sensor defective Replace the toner sensor
42
43
Toner empty sensor
connection error 1, 2
Engine controller board
defective
Replace the engine
controller board.
Lower feeder unit
connector damaged
Replace the lower feeder
unit
44 Lower feeder unit connection
error
Engine controller board
defective
Replace the engine
controller board.

Brother MFC-9420CN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 2400 DPI
Economical printing	Yes
Print speed (black, normal quality, A4/US Letter)	31 ppm
Print speed (color, normal quality, A4/US Letter)	8 ppm
Digital sender	No
Number of print cartridges	4
Scanner type	Flatbed scanner
Scanner features	Scan to: e-mail, image, OCR, file
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Copy speed (black, normal quality, A4)	31 cpm
Copy speed (color, normal quality, A4)	8 cpm
Faxing	Color faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	200
Total input capacity	750 sheets
Maximum input capacity	250 sheets
Auto document feeder (ADF) input capacity	35 sheets
Maximum internal memory	576 MB
Bundled software	ScanSoft PaperPort Presto! PageManager
I/O ports	IEEE-1284 USB 2.0
Dimensions (WxDxH)	483.5 x 514 x 530 mm
Printer management	BRAdmin Professional, MIB-II
Networking features	10Base-T/100Base-TX
All-in-one functions	Fax, Scan
Color all-in-one functions	copy, fax, print, scan
Compatible operating systems	Windows 98(SE)/ Me/ NT WorkStation 4.0/ 2000 Professional/ XP Mac OS 9.1 - 9.2, Mac OS X 10.2.4+
Sustainability certificates	ENERGY STAR
Power consumption (standby)	85 W
Power consumption (PowerSave)	16 W
Power consumption (average operating)	1090 W
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	20 - 80 %
Market positioning	Business