4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
4.20 Proximity Sensor on/off trouble
Proximity Sensor is worked as below:
Send Key click Î Phone number click Î Call connected Î Object moved at the sensor
Î Control the screen’s on/off operation automatically
Measurement
PROXI_VCC
1.8V_VIO
PROXI_LEDA
PROX_OUT
I2C3_SCL
I2C3_SDA
Object moved at the Proximity Sensor
LCD off?
No
Check PROXI_SDA /
SCL output & Prox_out
No
Yes
Work well?
START
END
No
Yes
Send Key click & call connected
Yes
Change the upper FPCB
Change the main board
(TP3)
(TP1)
(TP2)
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