Proximity Sensor On/Off Trouble - LG -E960 Service Manual

4.17 Proximity Sensor on/off trouble

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
Change the Upper FPCB.
LGE Internal Use Only
START
Send Key click & Phone number click
& Call connected
Object moved at the Proximity sensor
LCD off?
No
VREG_L9_3V(TP1)
& I2C_SDA(TP2) & I2C_SCL(TP3)
& PROX_AMBIENT_INT _N(TP4)
Output work well?
Change the main board
No
Function is OK?
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4. TROUBLE SHOOTING
Yes
Yes
No
Yes
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Only for training and service purposes
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