LG LG-E730 - Page 103

4. TROUBLE SHOOTING
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Check XO Block Refer to 4.3
Check TP1
If GSM over 31 dBm?
If DCS/PCS over 28 dBm?
GSM/DCS/PCS Tx is OK
Check other part
Yes
No
Change the board
Check TP2, 3
If GSM(TP2) over 31dBm?
If DCS/PCS(TP3) over 28 dBm?
Check Rx Dual Module
Refer to 4.4
Yes
No
Check QTR8200 & PAD
Check soldering and components
No Problem
Still exist Problem
START
No
Check TP4, 5
If GSM(TP4) under 9 dBm?
If DCS/PCS(TP5) over 7.5 dBm?
Check GSM PAM block
Yes
No