LG KU950 Service Manual page 95

4. TROUBLE SHOOTING
Set the Phone Rx is ON
Check BIAS
Over 2V ?
YES
Check TP1
Signal exist?
YES
Check TP2
Signal exist?
YES
Check TP3
Signal exist?
YES
Check TP4
Signal exist?
YES
Change the board
- 96 -
NO
Check bias block
soldering
NO
Check RF s/w
NO
Check FEM
NO
Check Duplexer
NO
Check RFR6250