LG L601i Service Manual page 81

4. TROUBLE SHOOTING
Set the Phone Rx is ON
NO
Check bias1
Over 2V ?
YES
NO
Check TP1
Signal exist?
YES
NO
Check TP2
Signal exist?
YES
NO
Check TP3
Signal exist?
YES
NO
Check TP4
Signal exist?
YES
Change the board
- 82 -
Check bias block
soldering
Check RF s/w
Check FEM
Check Duplexer
Check RFR6250