8.4.8 Operational Check of Control Panel PCB (Function code 13); Procedure ; 8.4.8 Operational Check of Control Panel PCB (Function code 13) - Page 174

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8.4.8  Operational Check of Control Panel PCB (Function code 13) 

„

 Function 

This function allows you to check the control panel PCB for normal operation. 

„

 Operating 

Procedure 

(1) MFC7420/7820N 

Press the 

1

 and 

3

 keys in this order in the initial stage of the maintenance mode. 

DCP7010/7020/7025 
Press the   key or   key several times to display the “MAINTENANCE 13” code on 
the LCD. Then press the 

Set

  key .

The "00    " will appear on the LCD. 

(2)  Press the keys and buttons in the order designated in the illustration shown below. 

The LCD shows the corresponding number in decimal notation each time a key or  
button is pressed.  Check that the displayed number is correct by referring to the  
illustration below. 
If a key or button is pressed out of order, the machine beeps and displays the  
"INVALID OPERATE" on the LCD.  To return to the status ready to accept key &  
button entry for operational check, press the 

Stop/Exit

 key. 

(3)  After the last number key or button is pressed, the machine beeps for one second and 

returns to the initial stage of the maintenance mode. 

To terminate this operation, press the 

Stop/Exit

 key.  The machine returns to the initial  

stage of the maintenance mode. 

MFC7420/7820N 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

18

17

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

16

DCP7010/7020/7025 

1

2

3

4

5

6

7

8

9

10

11

12