Tally Dascom 7010 Series Maintenance Manual page 144

4-2. Troubleshooting
Symptoms
Black mark on tag is
not detected.
(Reflective sensor
problem)
Or
Paper end is not
detected.
Checks
1. Is the Media Sensor menu correct?
2. Is the Adjustable Sensor positioned to
an appropriate position where a black
mark on tag can be detected? (When
adjustable sensor is to be used)
3. Is the sensor adjustment is performed
against media to be used?
4. Is the following connector of the SA,
Sensor Bottom firmly connected to the
SA, Main PCB?
For Adjustable Sensor: J22
For Front Fixed Sensor: J21
5. Is dust on the LED or phototransistor of
the Reflective Sensor?
6. Failure in the Reflective Sensor.
7. Failure in the control circuit.
1. Set it to "Reflect".
2. Move the Adjustable Sensor by
turning the adjustable sensor
position knob so that it is set to the
center of black mark.
3. Perform the sensor adjustment for
user. See "Sensor Adjustment for
user (Transparent Sensor/
Reflective Sensor)" on the next
page.
4. Connect it firmly.
5. Clean the LED/phototransistor to
remove dust.
6. Replace the SA, Sensor Bottom.
7. Replace the SA, Main PCB.
4-12
Remedies