Operational Check Of Lcd (Function Code 12) - Brother MFC620CN Service Manual

8.5.5 Operational Check of LCD (Function code 12)

Function
This function allows you to check whether the LCD on the control panel works normally.
For models with backlights, the light intensity also can be adjusted.
Operating Procedure
Checking the display state of the LCD:
(1) FC620CN /425CN/420CN /410CN/215C/210C
and FAX2440C
Press the 1 and 2 keys in this order in the
initial stage of the maintenance mode.
DCP315CN/310CN/120C/117C/115C/110C/
Enter 1 and 2 in the initial stage of the
maintenance mode by using the
keys.*
The LCD shows the screen given at right.
(2) Press the Black Start (Mono Start) key.
Each time you press the Black Start (Mono
Start) key, the LCD cycles through the
displays shown at right.
(3) Press the Stop/Exit key in any process of the above display cycle. The machine beeps for one
second and returns to the initial stage of the maintenance mode.
(*To enter a numerical code on models having no numerical keypad, press the
the numerical code to be entered and then press the Set key. Repeat this operation for each numerical code.)
Black Start (Mono Start)
Black Start (Mono Start)
Black Start (Mono Start)
and Set
8 - 1 7
key several times to display
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