Key Operation Test - LG LSRG309ST Service Manual

CHECKING FLOW CHART BY FAILURE

Key operation Test

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How to check Key operation
1. Keys should be accessed according to priority and check the buzzer operation when key is
accessed
2. If change the key access order, the buzzer make another beep
3. The buzzer has no operation when key accessed, , it would be defected.
How to stop - Key Test mode
- Press 1st 2nd ...
- Press 'CLEAR'
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28th 26th (CLEAR)
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[Fig.1]
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