Operational Check Of Lcd (Maintenance Mode 12) - Brother MFC-J3520 Service Manual

1.3.7 Operational Check of LCD (Maintenance mode 12)

< Function >
This function checks whether the LCD on the control panel works normally.
< Operating Procedure >
(1) Press the 1 and 2 keys in this order in the initial stage of the maintenance mode.
The screens are displayed on the LCD in the order shown in the table below.
(2) Each time you press the # key, the LCD cycles through the screens as shown
below.
Pressing the * key goes back to the immediately preceding screen.
When the last screen displays, pressing the # key switches to Screen 1.
(3) Press the X key in any process of the screen cycle to return the machine to the
initial stage of the maintenance mode.
<2.7 inch LCD model>
Screen 1
Completely blank
Screen 2
All black
Screen 3
All red
Screen 4
All green
Screen 5
All blue
Screen 6
All gray
Screen 7
Red stepwise
Screen 8
Green stepwise
Screen 9
Blue stepwise
Screen 10
Gray stepwise
Screen 11
Image data
Screen 12
Stroke detection
5-17
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