Brother MFC620CN Service Manual page 276

Adjusting the light intensity of the backlight:
(1) MFC620CN
Press the 1 and 2 keys in this order
in the initial stage of the
maintenance mode.
DCP315CN/310CN
Enter 1 and 2 in the initial stage of
the maintenance mode by using the
and Set keys.*
(2) MFC620CN
To increase the intensity, press the
key; to decrease it, press the
DCP315CN/310CN
Enter or by using the
keys.*
NOTE: The light intensity can be
adjusted to five levels.
(3) Press the Black Start (Mono Start)
key.
(4) No key operation for one minute returns the machine 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.)
key.
and Set
Black Start (Mono Start)
8 - 1 8
/
5
/
4
/
3
/
2
/
1
key several times to display
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