Brother HL-L9300CDW Service Manual page 136

4.6.3 The machine does not enter the ready state when the power is turned ON
DISABLE the function selection mode at startup by following the procedures below.
(1) Pull out the power cord and insert it again.
(2) Hold down the Home key for about 5 seconds while the machine is in the ready state.
The screen shown below is displayed on the LCD.
Memo:
If you cannot find the Home key, press the Toner key,
and the Home key lights up.
(3) Hold down the blank space at the bottom of the LCD for about 2 seconds.
The screen shown below is displayed on the LCD.
(4) Press the *, 1, 9, 3, and 7 keys on the LCD in this order.
(5) Press the 0, 0, 8, and 4 keys on the LCD in this order.
(6) Press the
(7) Press the SET key. The function selection at startup is disabled.
(8) Press the 9 key twice to return the machine to the ready state.
or key to display "FUNC_DISABLE" on the LCD.
2-116 Confidential