Brother HL-S7000DN Service Manual page 402

1.4.8 Adjustment of waste ink box sensor (Function code 19)
<Function>
This function allows you to check the operation of the waste ink box sensor and adjust the
output voltage of the waste ink box full sensor/waste ink box leak sensor. A waste ink box
having ink less than full is necessary when adjusting the output voltage of the waste ink box
full sensor/waste ink box leak sensor.
<Operating procedure>
(1) Press the 1 and 9 buttons in this order in the initial state of the maintenance mode.
"PULL BOX" is displayed on the LCD.
(2) Remove the waste ink box. If the waste ink box sensor works normally, the machine
displays "Insert BOX A" on the LCD. If the indication does not appear after removing the
waste ink box, the waste ink box sensor may be faulty.
(3) Install the waste ink box with waste ink less than full. When the waste ink box is installed,
the machine measures the output voltage of the waste ink box full sensor and displays
"FULL*.**V" on the LCD. If the displayed voltage is between 0.40 and 0.60 V, that means
the voltage is within the normal range.
(4) Press the Go button. If you press the Go button while the displayed voltage is within the
normal range of 0.40 to 0.60 V, you go to step (6). If you press the Go button while the
displayed voltage is outside the normal range, "Readjust" appears on the LCD and the
second measurement is performed.
(5) After the second measurement, the machine displays the measured voltage on the LCD.
Using the volume shown in the figure below, adjust the displayed voltage so that it
becomes within the range of 0.40 to 0.60 V. After the adjustment, press the Go button.
Volume
(6) "LEAK*.**V" is displayed on the LCD.
Press the Go button. If you press the Go button while the displayed voltage is within the
normal range of 0.40 to 0.60 V, you go to step (8). If you press the Go button while the
displayed voltage is outside the normal range, "Readjust" appears on the LCD and the
second measurement is performed.
Maintenance drive PCB ASSY
Fig. 5-4
5-14
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