Proximity Sensor On/Off Trouble Shooting - LG -D618 Service Manual

3.15 Proximity Sensor on/off Trouble Shooting

Proximity Sensor is worked as below:
Send Key click -> Phone number click -> Call connected -> Object moved at the sensor -> Control the screen's on/off
operation automatically
LGE Internal Use Only
START
Send Key click & Phone number click
& Call connected
Object moved at the Proximity sensor
LCD off?
Change the main board
Function is OK?
Yes
No
Yes
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3. TROUBLE SHOOTING
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Only for training and service purposes