LG LG-E400 - Accounts & Sync

4. TROUBLE SHOOTING
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4.14 Proximity Sensor on/off Trouble Shooting
Proximity Sensor is worked as below :
Call connected → Object moved at the sensor → Control the screen’s on/off operation automatically
Measurement
VREG_MSME_1.8V
VREG_PROX_2.6V
PROX_OUT
PROX_I2C_SCL / SDA
Call Connect & Object moved at the
Proximity Sensor
LCD off?
No
No
Yes
Work well?
START
END
Change the
Proximity Sensor (U602)
No
Yes
Chang the main board
Yes
Check PROX_I2C_SDA /
SCL Output & Prox_out
(TP1,2,3)