Brother MFC-9420CN Service Manual

Confidential
5-61
5.1.51 LV Power Supply PU / Power Supply Bracket PU ASSY
(1) Remove the setscrew (M4x6, 1 piece with star washer) of the grounding terminal.
(2) Disconnect the connector of the switch harness from the LV power supply PU.
(3) Remove the setscrew (ST3x6, 3 pieces) of the power supply bracket PU ASSY.
(4) Remove the power supply bracket PU ASSY (with the switch).
(5) Disconnect all the connectors connecting to the LV power supply PU.
(6) Remove the setscrew with washer (7 pieces) of the LV power supply PU.
(7) Remove the LV power supply from the frame.
CAUTION
This is the replacement work of the important parts pertaining to the product safety.
This work must be done by the skillful personnel having the sound knowledge on the
product safety and in the facility where the safety can be ensured. (This work requires the
insulation withstand voltage test and the measurement of the insulation resistance.)
Fig. 5-98
Frame
Setscrew
LV power supply PU
Power supply bracket PU
A
SS
Y
ST3x6
M4x6
Setscrew
ST3x6
Grounding terminal

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