No Key Input - LG LSGL6337F Service Manual

CHECKING FLOW CHART BY FAILURE

No key input

Key does not input
Check the Control Lock operation.
Nomal: unlock
Normal?
Yes
Check the control panel and
Find the mechanical malfunction of key
Normal?
Yes
Replace the main PCB
END
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Only training and service purposes
No
(press the Control Lock key for three seconds)
No
10-17
Cancel the Control Lock
No
Normal?
Yes
END
Replace the control panel
END