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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
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25
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27
28
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31
32
33
34
16
DCP7010/7020/7025
1
2
3
4
5
6
7
8
9
10
11
12