Brother MFC-9420CN Service Manual

Confidential
5-8
(1) Open the back cover and scanner unit.
(2) Release the two lock knobs to remove the fusing unit from the machine.
Fig. 5-3
Fig. 5-4
(3) Remove the setscrew (A) (BT3x6, 1 piece), the shoulder screw (A’) and pull up the two
release levers to remove the top fuser cover FU.
(4) Remove the screw (B) to remove the lock knob KIT FU. (2 places)
(5) Remove the setscrew (C) (BT3x8, 2 pieces) of the front fuser cover FU.
(6) Remove the front fuser cover FU.
(7) Remove the setscrew (D) (ST3x6, 1 piece and FU shoulder screw, 2 pieces) of the bottom
fuser cover FU.
(8) Remove the setscrew (E) (SM3x6 with washer, 1 piece) from the bottom fuser cover FU.
(9) Remove the setscrew (F) (ST3x6, 1 piece) to remove the ground wire.
(10) Remove the setscrew (G) (SM3x6 with washer, 1 piece) of the fuser lamp from the terminal;
Pull out the tube from the harness.
(11) Remove the bottom fuser cover FU from the fuser roller ASSY FU.
(12) Remove the setscrew (H) (SM3x6 with washer, 1 piece) of the fuser lamp terminal from the
terminal.
(13) Remove the setscrew (I) (SM3x6 with washer, 2 pieces) of the lamp holder, and then
remove the lamp holder.
Fusing unit
Lock leve
r
Lock lever

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