Brother MFC-9420CN Service Manual

Confidential
9-11
Error Code
(Hex)
Symptom Probable Cause Solution
The paper ejection
roller does not rotate
correctly
Replace the paper ejection
roller.
Foreign materials in the
paper path.
Remove foreign materials.
Registration sensor
actuator caught on the
surrounding parts
Correct the surrounding
parts on which the
actuator caught.
Registration sensor
broken
Replace the sensor PCB.
84 Recording paper jam.
(The registration sensor stays
ON after completion of paper
ejection operation.)
Engine controller board
PCB defective
Replace the engine
controller board PCB.
85 No paper tray loaded.
---
---
86 Tray2 Open
87 Paper Type Error
---
---
Recording paper not
loaded correctly
Instruct the user to load
the recording
Registration sensor
broken
Replace the registration
sensor.
Separation pad
damaged
Replace the paper tray.
Objects, such as bits of
paper or chips, are in
the paper tray or paper
tray
Remove the objects from
the paper tray.
Paper pick up roller
defective
Replace the paper pick up
roller.
Main motor broken Replace the main motor
ASSY.
88 Recording paper jam. (Even
after paper pulling-in
operation, the registration
sensor is still OFF.)
Engine controller board
PCB defective
Replace the engine
controller board PCB.
89 Not used.
8A The main motor does not
rotate. (Not used.)
---
---
8B The main motor stops
suddenly. (Not used.)
--- ---
8C Not used.
8D-A0 Not used.

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