Brother HL-4040CN - Operational Check of LCD (Function Code 12)

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1.4.4 Operational Check of LCD (Function code 12)
<Function>
This function allows you to check whether the LCD on the control panel works normally.
<Operating Procedure>
(1) Press the or button to display “MAINTENANCE 12” on the LCD in the initial stage of
the maintenance mode. Then, press the OK button.
(2) Each time you press the Go button, the LCD cycles through the displays as shown below.
(3) Press Cancel button in any process of the display cycle. The machine returns to the initial
stage of the maintenance mode.
Backlight : Orange lighting
Data LED : Orange blinking
Direct Print LED : Blue blinking
Backlight : Red lighting
Data LED : Orange blinking
Direct Print LED : Blue blinking
Backlight : Green lighting
Data LED : Orange blinking
Direct Print LED : Blue blinking
Fig. 5-3
<Display 1>
< Display 2>
< Display 3>