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TP1 signal is exist?
TP2 signal is exist?
TP4 is over 21dBm?
TP3 signal is exist?
Signal is over 3dBm?
or soldering condition
OK?
LGE Internal Use Only
START
Check TP1
Yes
Check TP2
Yes
Check TP3/TP4
YES
No
Check TP3
No
Check Transceiver
physical damage
Check next step
No
Check FL1103 Soldering
No
Check FL1203 Soldering
Yes
Check FL1203 Soldering
No
Yes
Check U1300 Soldering
Replace U1500
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3. TROUBLE SHOOTING
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