Brother MFC-9420CN Service Manual

8-27 Confidential
8.2 ENGINE SERVICE MODE
The machine provides the functions described in the following sections so that the operation status
of the printer itself is easily obtained in maintenance work.
They are the dedicated maintenance modes for service, and two types of the function are provided,
which enables to check the operation status (code 31 to 38) and enables to check and set the
performance of the main components in maintenance work.
8.2.1 Entry into the Engine Service Mode
 Operating Procedure
(1) Turn the power switch ON while holding down the * and 1 keys or * and 2 keys.
NOTE: The contents of the test print vary depending on pressing the * and 1 keys or * and
2 keys. Press either of them according as the pattern you want to print.
(For other functions, the contents are the same.)
(2) The machine displays “SERVICE MODE / ► TEST PRINT” on the LCD.
 Operation key position
Fig. 8-11
LCD: 16 characters by 2 lines
Cancel ke
y
Select ke
y
Scroll (Right) ke
y
Scroll (Left) ke
y

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