Brother Facsimile Equipment MFC7420 - Manual (Page 175)

8 - 1 8 Confidential
8.4.9 Sensor Operational Check (Function code 32)
„ Function
This function allows you to check whether the 9 sensors.
„ Operating Procedure
(1) MFC7420/7820N
Press the 3 and 2 keys in this order in the initial stage of the maintenance mode.
DCO7010/7020/7025
Press the key or key several times to display the “MAINTENANCE 32” code on
the LCD. Then press the Set key .
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 (Set) key.
If the sensing status are as listed below, the LCD will show the following:
"DFDRCV" and "NTMNRSTNKOFU" (which can be switched by pressing the 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.
CV Cover sensor Front cover closed.
NT New toner sensor New toner detected.
MN Manual insertion sensor No paper detected.
RS Registration sensor No paper detected.
TN Toner sensor Toner detected.
KO Tail edge sensor No paper detected.
FU Fixing sensor No recording paper detected.
* MFC7420/7820N and DCP7020/7025 ONLY