4. Troubleshooting
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4-2 Control parts
No display
No
Ok
Make sure that power cord is
connected.
No display.
Insert the power cord.
No
Check the voltage of the Power
cord connector housing. [120V]
Replace the Power cord.
Ok
END
No
Make sure that wire harness of
LED display is connected. (CN220)
Reconnect wire securely.
END
END
Make sure that power cord is
connected
Check the voltage of the Power cord
connector housing. [L-N : 120V]
Check connection state LED Display
pin to connector [CN430]
Assemble LED display again.
Check the 5v voltage of the PCB
connector [CN430, 1-2p].
END
END
END
END
END
Replace LED Display.
Ok
Ok
Ok
No
No
Replace sub PCB.