Brother MFC9100C Service Manual page 177

3.10 Setting the Sensing Reference Levels of Black Ink Empty Sensor
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Function
This function allows you to set the sensing reference levels of the black ink empty sensor which
apply when the controller judges whether there is ink in the black ink cartridge. The setting
procedure requires two types of reference cartridgesan empty cartridge and foam-empty
cartridge.
NOTE: If you replace the carriage ASSY, carry out this procedure.
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Operating Procedure
Handling notes for reference cartridges: Shown below are empty cartridge and foam-empty
cartridge to be used for setting the sensing reference levels of the black ink empty sensor. Do not
touch section "x" or "y."
If any dust or dirt is found on "x" or "y," wipe it off with a soft cloth. If "x" is scratched, replace the
cartridge with a new one. Using such a scratched cartridge will fail to set correct reference levels.
After completion of the setting procedure, store those cartridges in the container.
Empty cartridge
(1) Press the 5 and 7 keys in this order in the initial stage of the maintenance mode.
The LCD shows the "BKEMP TEST START" and "REMOVE ALL CART!" alternately.
(2) Open the scanner unit.
The carriage automatically moves left to the ink cartridge replacement position.
(3) Remove all ink cartridges, one at a time.
(4) Close the scanner unit.
(5) Press the Stop key to return to the initial stage of the maintenance mode.
(6) Press the 5 and 7 keys in this order again.
The LCD shows the "BKEMP TEST START" and "SET EMPTY CART!" alternately.
(7) Open the scanner unit.
The carriage automatically moves left to the ink cartridge replacement position.
(8) Set the empty cartridge into the black ink cartridge position.
Foam-empty cartridge
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