Sensor Operational Check (Function Mode 32) - Brother MFC-9420CN Service Manual

8.4.9

Sensor Operational Check (Function mode 32)

Function
This function allows you to check whether the 9 sensors.
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.
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
DF
DR
FC Document cover open sensor
CV
TC
RC
C1
P1 Tray1 recording paper sensor
C2
P2 Tray2 recording paper sensor
RM
RS
PO
CC
MC
YC
KC
Fig. 8-7
Sensors
Document front sensor
Document rear sensor
Front cover open sensor
Top cover open sensor
Rear cover open sensor
Tray1 cassette open sensor
Tray2 cassette open sensor
Registration front sensor
Registration rear sensor
Paper ejection sensor
Cyan cartridge sensor
Magenta cartridge sensor
Yellow cartridge sensor
Black cartridge sensor
8 -1 4
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Sensing status
No document detected.
No document detected.
Document cover closed.
Front cover closed.
Top cover closed.
Rear cover closed.
Tray1 closed.
Recording paper detected.
Tray2 closed.
Recording paper detected.
No recording paper detected.
No recording paper detected.
No paper jam.
Cyan cartridge loaded.
Magenta cartridge loaded.
Yellow cartridge loaded.
Black cartridge loaded.
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