Key Operation Test Sequence - LG LDE4415ST Service Manual

■ How to check button operation
1. Keys should be accessed according to the above sequence and check the beep
sound when key is accessed.
If Key is the normal operation will be the number that corresponds to the Key
displayed on the VFD
2. If the key access order was changed, the buzzer make double beep sound
3. The buzzer does NOT beep when a key was accessed, it would be defected.
■ How to stop - Key Test mode
- Press 1st  2nd ...  35th (Lower CLEAR/OFF)
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KEY OPERATION TEST SEQUENCE

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