LG LG-K430DSF - Page 32

32
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3. TROUBLE SHOOTING
3.6 WCDMA RF PART
3.6.3 Checking RF Signal RX path(WCDMA B1)
Checking Flow Image
TP2
TP1
Circuit Diagram
TP1
TP2
START
Check TP1/TP2 Signal
exist?
NO
Replace
U1002
YES
Check Transceiver
physical damage
or soldering condition
Replace
U1500
NOT
GOOD
OK?
Check next step