Brother MFC-9420CN Service Manual

6-26 Confidential
6.6 IF YOU REPLACE THE FUSING UNIT
Reset the fusing unit life counter when replacing the fusing unit.
When replacing the fusing unit due to repair before its life.
 Resetting the fusing unit life counter from the normal standby status (supporting ver.0.35 or
later of the firmware)
(1) Press the 2 and 8 keys at the same time.
The “Fusing unit/1. Reset 2 Exit” message appears on the LCD.
(2) Press the 1 key.
The fusing unit life counter is reset, and the machine returns to the normal standby status.
 Resetting the fusing unit life counter from the maintenance mode (supporting all versions of
the firmware)
(1) Press the Menu/Set and Black Start keys. Next press the
key four times to make the
machine enter the maintenance mode.
(2) Press the 8 and 0 keys in this order.
(3) Press the Black Start key a few times so that “Fusing unit” appears on the LCD.
(4) Press the 2, 7, 8, 3 keys in this order. Then, the fusing unit life counter is reset.
(5) Press the Stop/Exit key so that the machine returns to the initial status of the
maintenance mode.
(6) Press the 9 key twice to exit from the maintenance mode.
When replacing the fusing unit due to end of its life. (The steps below are described in the user’s
guide.)
When “Replace Fuser” appears on the LCD, you must replace the f
using unit and reset the
f
using unit life counter.
(1) Press Menu/Set key, 7 key and 4 key.
(2) Press
key to select “Fusing Unit” and press Menu/Set key.
The “Fusing unit/1. Reset 2 Exit” message appears on the LCD.
(3) Press the 1 key.
The fusing unit life counter is reset, and the machine returns to the normal standby status.

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