LG LG-D855 - Page 83

3. TROUBLE SHOOTING
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START
No
No
Not good
OK?
Check next step
Check TP1/2/3/4
Signal is over 23dBm?
Check TP5/6
Signal is over 3.5dBm
Check Transceiver physical damage
or soldering condition
Check component above RF signal path
Check U1301 Soldering
Replace U1500
Yes
Yes