No Key Input - LG LRE30451 Service

FAILURE MODE FLOW CHART

No key input

Key does not input
Reconnect the main PCB connector
CN11 and CN20 more than two times
Yes
END
Some keys or
Replace the main PCB
Replace the keypad assembly
Normal?
No
All
All keys?
Some
Yes
Normal?
No
END
6-11
Replace the main PCB(009A)
END
END