Citizen CLP-631 - Page 136

4-2. Troubleshooting
4-11 CLP-621 & CLP-631
Symptoms Checks Remedies
Black mark on tag is
not detected.
(Reflective sensor
problem)
Or
Paper end is not
detected.
1. Is the Media Sensor menu correct?
2. Does the Reflective Sensor match with
the black mark?
3. Is the sensor adjustment is performed
against media to be used?
4. Is the Reflective Sensor Cable SA firmly
connected between the Reflective
Sensor PCB SA and the Main PCB SA
(CN6)?
5. Is dust on the LEDs or photo transistor
of the Reflective Sensor?
6. Failure in the Reflective Sensor.
7. Failure in the control circuit.
1. Set it to “Reflect”.
2. Move the sensor in the center of
black mark.
3. Perform the sensor adjustment.
See 2-3-2 (1-1) “Sensor
Adjustment mode”.
4. Connect it firmly.
5. Clean the LEDs to remove dust.
6. Replace the Reflective Sensor
PCB SA.
7. Replace the Main PCB Unit.
4-2-6. Operation Panel Problems
Symptoms Checks Remedies
Nothing is displayed
on the LED.
1. Is the Ope-pane Cable connected
between the Main PCB Unit (CN12)
and the Ope-Pane PCB SA firmly?
2. Is the Ope-pane Cable inserted upside
down?
3. Failure in the Ope-Panel PCB SA.
4. Failure in the control circuit.
1. Connect it firmly.
2. Insert it in the correct direction.
3. Replace the Ope-Pane PCB SA.
4. Replace the Main PCB Unit.
No key works.
1. Is the Ope-pane Cable connected
between the Main PCB Unit (CN12)
and the Ope-Pane PCB SA firmly?
2. Is the Ope-pane Cable inserted upside
down?
3. Failure in the Ope-Pane PCB SA.
4. Failure in the control circuit.
1. Connect it firmly.
2. Insert it in the correct direction.
3. Replace the Ope-Pane PCB SA.
4. Replace the Main PCB Unit.