Proximity Sensor - LG -E450 Service Manual

4.10 Proximity Sensor

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
Object moved at the Proximity sensor
LGE Internal Use Only
START
Send Key click & Phone number click
& Call connected
LCD off?
Check +3V_PROX_AMBIENT(TP1)
& I2C_SENSOR_SDA & SCL
& PROX__INT
Output work well?
Change the main board
Function is OK?
Yes
No
Yes
No
Yes
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4. TROUBLE SHOOTING
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Only for training and service purposes