LG LG-X230DS - App Management

LGE Internal Use Only
3. TROUBLE SHOOTING
3.12.2 Checking proximity sensor Block
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
Image
Checking Flow
Start
Check U801
Soldering
Check
TP1&TP2
Voltage
Re-solder or change
U801
Re-solder or change
U401
P Sensor function ok
Re-solder or change
R302,R307,U101
Check TP3
&TP4 signal
No
Yes
No
Yes
No
Yes
U801
TP1
TP2
3.12 Checking sensor Block
TP3
TP4
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rved. Only training and service purposes
TP1
TP2
TP3
TP4
Circuit Diagram
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