Operation Panel Problems - Citizen CL-E700 series Technical Manual

Chapter 4 Troubleshooting
4-2. Troubleshooting

4-2-6. Operation Panel Problems

Symptoms
Nothing is displayed
on the LED
No key works.
Nothing is displayed
on the LCD
CL-E700 series
Checks
1. Is the "FFC Opepane" firmly connected
between the "SA Main PCB" (J3) and
"SA Opepane PCB"?
2. Is the "FFC Opepane" inserted upside
down?
3. Failure in the "SA Opepane PCB".
4. Failure in the control circuit.
1. Is the "FFC Opepane" firmly connected
between the "SA Main PCB" (J3) and
"SA Opepane PCB"?
2. Is the "FFC Opepane" inserted upside
down?
3. Failure in the "SA Opepane PCB".
4. Failure in the control circuit.
1. Is the printer in standby mode (the LED
lights in green)?
2. Is the "FFC Opepane" firmly connected
between the "SA Main PCB" (J3) and
"SA Opepane PCB"?
3. Is the "FFC Opepane" inserted upside
down?
4. Failure in the "SA Opepane PCB".
5. Failure in the control circuit.
1. Connect it firmly.
2. Connect it in the right orientation.
3. Replace the "SA Opepane PCB".
4. Replace the "SA Main PCB".
1. Connect it firmly.
2. Connect it in the right orientation.
3. Replace the "SA Opepane PCB".
4. Replace the "SA Main PCB".
1. Press any key.
2. Connect it firmly.
3. Connect it in the right orientation.
4. Replace the "SA Opepane PCB".
5. Replace the "SA Main PCB".
4-14
Remedies