Brother MFC-9420CN Service Manual

8-14 Confidential
8.1.4.9 Sensor Operational Check (Function code 32)


 Function
This function allows you to check whether the 9 sensors.
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
 Operating Procedure
(1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The
machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for
testing the speaker. To stop beeping, press the Menu/Set key.
Fig. 8-7
If the sensing status are as listed below, the LCD will show the following:
"DFDRFCCVTORC", "C1P1C2P2RMRAPO" and "CCMCYCKCFUOBORTR"
(which can be switched by pressing the Black Start key for machines.)
Given below is the relationship between the LCD indication, sensor names and sensor
status.
LCD Sensors Sensing status
DF Document front sensor No document detected.
DR Document rear sensor No document detected.
FC Document cover open sensor Document cover closed.
CV Front cover open sensor Front cover closed.
TC Top cover open sensor Top cover closed.
RC Back cover open sensor Back cover closed.
C1 Tray1 cassette open sensor Tray1 closed.
P1 Tray1 recording paper sensor Recording paper detected.
C2 Tray2 cassette open sensor Tray2 closed.
P2 Tray2 recording paper sensor Recording paper detected.
RM Registration sensor No recording paper detected.
RA Fuser exit sensor No recording paper detected.
PO Out put tray full sensor No paper jam.
CC* Cyan cartridge sensor Cyan cartridge loaded.
MC* Magenta cartridge sensor Magenta cartridge loaded.
YC* Yellow cartridge sensor Yellow cartridge loaded.
KC* Black cartridge sensor Black cartridge loaded.

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