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Using Printer Diagnostics 4-7
Testing the Sensors
1. Tap Sensor Tests from the Print Engine Tests screen.
2. You see the values for battery voltage,
black mark sensor, on-demand sensor, and
printhead temperature. The battery voltage
range is between 7.0 and 8.4 volts. The
printer will not print if the voltage is below
7.0.
3. Open the cover to test the sensors.
♦ For the Black Mark sensor, hold a black
mark against the sensor as shown. When
you place the black mark on the sensor, the
values change on the screen. If white is
over the sensor, the values shown for the
sensor are higher. The range is between 0
and 5.0.
Black Mark Sensor
Place black mark on
supply over sensor.