LG D690 - Proximity Sensor Troubleshooting

3. TROUBLE SHOOTING
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3. 15 Proximity Sensor troubleshooting
Proximity Sensor is worked as below:
Send Key click -> Phone number click -> Call connected -> Object moved at the sensor
-> Control the screen’s on/o operation automatically
Start
Object moved at the
Proximity sensor
Send Key click
& Phone number click
& Call connected
Change the main board
LCD o?
Function is OK?
END
END
No
Yes
Yes