Citizen CT-S651 Series

CT-S651 Series Service Manual
- 34 -
● Operation Panel Display Failure
Phenomenon Cause Check Method Remedies
The connector has a bad
connection or cable
disconnection.
Check the connecting
condition of the connector.
Check the cable surface.
Connect the connector
correctly.
Replace “SA, OP-PANEL
CABLE”.
The operation panel LED
does not illuminate.
“OP-PANEL PCB” is faulty. Replace the cable with a
new one and check if the
LED illuminates.
Replace “UNIT, OP-PANEL
PCB”.