Brother HL-L9300CDW Service Manual page 289

Color laser printer
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CHAPTER 5 SERVICE FUNCTIONS
1.
MAINTENANCE MODE
The maintenance mode is exclusively designed for the checking, setting and adjustments of the
machine by using the keys on the control panel. You can check the operations of sensors, perform
a print test, display the log information or error codes, and modify the worker switch (WSW).
1.1
How to Enter the Maintenance Mode
1.1.1
How to Enter the Maintenance Mode Exclusive to Service Personnel
<Operating procedure>
Model without touch panel
(1) Press the OK key and then the Go key while the machine is in the ready state.
Next, press the
Note:
To enter the maintenance mode, you must press the Go key within 2 seconds after
pressing the OK key. Also, you need to press the
pressing the Go key.
(2) The machine displays "
the initial state of the maintenance mode. In this mode, the machine is ready to accept
entry from the keys.
(3) To select one of the maintenance-mode functions listed in
Functions", press the
Then press the OK key.
Model with touch panel
(1) Hold down the Home key for about 5 seconds while
the machine is in the ready state. The screen shown
on the right is displayed on the LCD.
Memo:
If you cannot find the Home key, press the Toner key, and the Home
key lights up.
(2) Hold down the blank space at the bottom of the LCD
for about 2 seconds. The screen shown on the right
is displayed on the LCD.
key four times to enter the maintenance mode.
or
key to display any function code on the LCD.
5-1
key within 2 seconds after
" on the LCD, indicating that it is placed in
"1.2 List of Maintenance-mode
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