Check Control Panel Key Operation (Function Code: 13) - Brother HL-L2300D Service Manual

1.3.5 Check control panel key operation (function code: 13)

<Function>
This function is used to check that keys on the control panel are operating normally.
<Operating Procedure>
(1) Press the [▲] or [▼] key in the initial state of maintenance mode to display
"MAINTENANCE 13" on the LCD, and press the [OK] key. "00:" is displayed on the LCD.
(2) Press the keys on the control panel according to the numbers provided in the figure
below.
Each time the key is pressed, the corresponding figure is displayed on the LCD in
decimal notation.
Check that the number and the key name displayed on the LCD matches the number
assigned to the key that has been pressed. If the keys are pressed in the incorrect order,
"INVALID OPERATE" is displayed on the LCD. Press and hold the [Go] key and try
again with the correct key.
(3) When the key operation is normal, the machine returns to the initial state of maintenance
mode when the last key is pressed. To cancel operation and return to the initial state of
maintenance mode, press and hold the [Go] key.
■ Order of pressing keys
Fig. 5-4
5-12
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