Brother MFC-9420CN Service Manual

6-22 Confidential
(13) Secure the top side R with the screw (1piece).
(14) Close the front cover and back cover.
(15) Install the paper tray.
Fig. 6-31
< How to reset the 120K Kit >
(1) Press the Menu/Set, Black Start, , , and keys in this order to enter the maintenance
mode.
(2) Press the 8 and 0 keys in this order to indicate the LOG INFO message on the LCD, and
press the Black Start key several times until the “120K_CH:” message appears.
(3) Press the 2, 7, 8 and 3 keys in this order to reset the counter of the 120K Kit.
(4) Press the 9 key twice so that the printer returns to the standby status.
CAUTION
• This work is one of periodic replacement jobs, but cannot be the customer. This should be
implemented upon request of customer or at periodic maintenance.
• After the replacement, confirm the feeding of media such as plain paper, OHP, and stack
paper.
Screw
Top side R
Back cover

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