LG LG-X230DS - Health and Environmental Safety

LGE Internal Use Only
3. TROUBLE SHOOTING
3.3.2 . All Band FEM Block (GSM 850/900/1800/1900, WCDMA B1/5/8)
3.3 FEM (Front-End Module) Block
Circuit Diagram
Image
Checking Flow
TP1(3.7~ 4.2V)
TP2(1.8V)
U3101
Main
Bot
TP1(3.7~4.2V)C1529
TP2(1.8V)C1528
Check TP1
Change or charging
the Battery
Check TP2
YES
NO
NO
Re-solder or change
YES
The Voltage of FEM is OK
START
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