Brother HLL3290CDW Service Manual page 360

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Switching of black toner discharge compensation
< Function >
When this setting is ON, in order to improve the fogging of the black printing, if a certain
number of sheets are printed after replacing the black toner cartridge, the black toner is
discharged at the next printing and before printing. When this setting is OFF, the discharge is
not executed.
< Operating Procedure >
(1) For models with touch panel
Press the [4], and then the [5] in the initial state of maintenance mode. "USBNo." is
displayed on the LCD.
For models without touch panel
Press the [▲] or [▼] in the initial state of maintenance mode to display "MAINTENANCE
45" on the LCD, and press the [OK]. "USBNo." is displayed on the LCD.
(2) Press the [▲] or [▼] to display "Purge K toner" on the LCD, and press the [SET] or [OK].
"PurgeKtoner ON*" or "PurgeKtoner OFF*" is displayed on the LCD.
(3) Press the [▲] or [▼] to select "ON" or "OFF" on the LCD, and press the [SET] or [OK].
"Accepted" is displayed on the LCD, and the machine returns to the initial state of
maintenance mode.
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