Not Operating Key (Including F-3 Error) - LG LSWS305ST Service Manual

CHECKING FLOW CHART BY FAILURE MODE

Not operating Key (including F-3 error)

Key operating fail(F-3)
CN7
Check the connection key pcb's CN7 and
between display pcb and key pcb(CN6)
CN6
No
Fix the connection
Is connection OK?
Yes
Replace the control supporter(ITO film+Glass touch PCB)
No
Is Key operating OK?
Replace the Display pcb
Yes
END
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