D. Checking Black Line Sensor
Switch the multimeter to the DC gear. Connect the black wire to DC GND, and the red
wire to PIN2 of JP4. Load black line label on the printer.
1. When black line is detected by the black line sensor, the measured voltage should
be 5 Vdc.
2. When black line is not detected by the black line sensor, the measured voltage
should be 0 Vdc.
The black line sensor is normal if the checking complies with the two cases above. Or
else, the black line sensor is out of order.
E. Checking Peel Off Sensor
Switch the multimeter to the DC gear. Connect the black wire to DC GND, and the red
wire to PIN6 of JP3.
1. When label is detected by the peel off sensor, the measured voltage should be 0
Vdc.
2. When label is not detected by the peel off sensor, the measured voltage should be 5
Vdc.
The peel off sensor is normal if the checking complies with the two cases above. Or
else, the peel off sensor is out of order.
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