LG -P970 Service Manual page 124

Set the phone Rx is On
Check BIAS over .85V
Yes
Check TP1 Signal exist?
Yes
Check TP Signal exist?
Yes
Check TP3 Signal exist?
Yes
Check TP4 Signal exist?
Yes
Check TP5 Signal exist?
Yes
Change the board
LGE Internal Use Only
No
Check bias block soldering
No
Check RF Switch (M/S)
No
Check TX Module Refer 1.4
No
Check Duplexer
No
Check LNA
No
Check PMB5703 and Rx SAW filter
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4. TROUBLE SHOOTING
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