Operation Panel Problems - Citizen CL-S6621 Technical Manual

Troubleshooting
Symptoms
Paper near end alarm
does not occur for roll
paper.

4-2-6. Operation Panel Problems

Symptoms
Nothing is displayed
on the LED.
No key works.
CL-S6621
Checks
1. Are the following Paper Near End
menus set correct in the Menu
Settings?
Paper Near End Status: ON
Paper Near End Alarm: ON (by default,
this is set to OFF)
2. Is the connector of "SA PNE Sensor"
firmly connected to the "SA, Main PCB"
(J12)?
3. Failure in the PNE Sensor circuit or
cable.
4. Failure in the control circuit.
Checks
1. Is the "Cable, Opepane" (flexible cable)
connected between the "SA, Main PCB"
(J4) and the "SA, Opepane PCB"
firmly?
2. Is the "Cable, Opepane" (flexible cable)
inserted in a wrong direction?
3. Failure in the "SA, Opepane PCB".
4. Failure in the control circuit.
1. Is the "Cable, Opepane" (flexible cable)
connected between the "SA, Main PCB"
(J4) and the "SA, Opepane PCB"
(CN301) firmly?
2. Is the "Cable, Opepane" (flexible cable)
inserted in a wrong direction?
3. Failure in the "SA, Opepane PCB".
4. Failure in the control circuit.
1. Set the Paper Near End menus
correctly.
2. Connect it firmly.
3. Replace the "SA PNE Sensor".
4. Replace the "SA, Main PCB".
1. Connect it firmly.
2. Insert it in the correct direction.
3. Replace the "SA, Opepane PCB".
4. Replace the "SA, Main PCB".
1. Connect it firmly.
2. Insert it in the correct direction.
3. Replace the "SA, Opepane PCB".
4. Replace the "SA, Main PCB".
4-12
Remedies
Remedies