8.4.9 Sensor Operational Check (Function code 32); Procedure ; Sensor Operational Check (Function code 32) - Page 175

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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