LG -P715 Service Manual page 71

LGE Internal Use Only
Start
Check TCXO BlockRefer to 1.3
Check TP1
If GSM over 31 dBm ?
If DCS/PCS over 28 dBm ?
No
Check TP2, 3
If GSM(TP2) under 6 dBm ?
If DCS/PCS(TP3) under 6 dBm ?
No
Check RTR & PAD
Still exist Problem
Change the board
Yes
GSM/DCS/PCSTx is OK
Check other part
Yes
Check Tx Module(ASM+EDGE PAM)
No Problem
Check soldering and components
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4. TROUBLE SHOOTING
Refer to 4.4
Only for training and service purposes