4. TROUBLE SHOOTING
- 101 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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
Send Key click & Phone number click &
Call connected
START
Change the vt_cam fpcb
LCD off?
END
Yes
Check Sensor_3.0V(TP1)
& I2C3_SDA & SCL
& PROX_INT Output(TP2)
Output work well?
No
END
Yes
Change the main board
Function is OK?
END
Yes
No
No
Object moved at the
Proximity sensor