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TROUBLE SHOOTING
This model has a buzzer on the Panel PBA. If the buzzer does not sounds when button is pressed,
Forced Operation, door open and disconnection with Main PBA, check out defective soldering on PBA or
buzzer damage. (It is recommended replacing Panel PBA if components are damaged)
※ It could be unable to hear in case there is heavy noise or built-in environment.
3) If a buzzer does not sound
Start
Check & Replace a buzzer
on Panel PBA
NO
YES
"DingDond"
Sounds when a button on the
display panel is pressed
Normal
YES
Door alarm
sounds after any of doors
are open over 2 min.
NO
Buzzer Breakage
Replace Buzzer or Panel PBA
YES
The Buzzer surface is
broken or bended.
NO
YES
Buzzer lead comes off
from the vibration plate.
NO
Replace Panel PBA
Check the button press force and structural
design (Door Sensing)
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