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Check TP1 Signal exist?
Check TP2 Signal exist ?
Check TP3/5 Signal exist?
Check TP4/6 Signal exist?
Check Transceiver physical damage
LGE Internal Use Only
START
Yes
Yes
Yes
Yes
or soldering condition
OK?
Check next step
No
Check FL1102 Soldering
No
Check C1107 Soldering
No
Check FL1201 Soldering
No
Check component above RF Signal path
between FL1201 and U1500
NOT GOOD
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3. TROUBLE SHOOTING
Replace U1500
Only for training and service purposes
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