Brother MFC-9420CN Service Manual

8-41 Confidential
[ 3 ] NVRAM Tune Up (Code 45)
 Although this mode is not used normally, it consists of the five modes which allow you to
adjust the value of each section exactly.
Always implement the operations of all these modes when replacing the engine control
board.
[ 3 ]-1 LP Tune Up
[ 3 ]-2 THV Tune Up
[ 3 ]-3 DBV Tune Up
[ 3 ]-4 CBV Tune Up
[ 3 ]-5 FBV Tune Up
[ 3 ]-6 Factory Use
[ 3 ]-1 LP Tune Up (Code 45-1)


 Function
This function is used when it is required to adjust the print density, line thickness, hue or the
like. The adjustment is implemented by changing the laser power, and it is changeable by ±7
steps from the standard value “0”.
Always implement the operation when replacing the engine control board.


 Operating Procedure
(1) Select NVM Tune UP with using the 4 or 5 key in the initial stage of the factory mode.
After selecting, press the 6 key.
The “45 NVM TUNE UP / ▲ 2 3 4 5 6 7 8 9 A B C D E F G” appears on the LCD.
(2) Select “1” with using the 4 or 5 key and press the 6 key.
(3) Select the color to be adjusted with using the 4 or 5 key and press the 6 key.
(4) Select the optional number with using the 4 or 5 key and press the 6 key.
The data is written into the NVRAM.
The value can be adjusted by ±7 steps.
(5) Press the 3 key so that the display is returned to the message described in Step (1).
When adjusting other colors, repeat Step (2) to (5).
(6) Press the 3 key again, and the machine returns to the initial stage of the factory mode.

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