3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
3.15.2 Proximity
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
START
Proximity function Check.
End
Check
+2V85_VREG_L19 (C8400)
TP1
+1V8_VREG_LVS1 (R8400)
TP2
OK?
Sensor Woks OK ?
Sensor Woks OK ?
Check I2C Line.
(R2207, R2208)
TP3
OK?
No
No
No
Yes
Yes
Yes
Change PM8926. (U4100)
Change Main Board.
Change the proximity sensor
(U8400).
Yes