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Check TP1/3
Signal is over 21dBm?
Check TP2/4
Signal is over 21dBm?
Signal is over 3.5dBm
Signal is over 3.5dBm
Check Transceiver physical damage
or soldering condition
Check next step
LGE Internal Use Only
START
No
No
Check TP6
No
Check TP7
No
NOT GOOD
OK?
Yes
Check FL1201 Soldering
Yes
Check component above RF signal path
between FL1201 and U1500
Yes
Check U1300 Soldering
Yes
Check component above RF signal path
between U1300 and U1500
Replace U1500
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3. TROUBLE SHOOTING
Only for training and service purposes
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