LG LG-E400 - Page 77

4. TROUBLE SHOOTING
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Check TCXO Block Refer to 1.3
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) under 6 dBm?
If DCS/PCS(TP3) over 6 dBm?
Check Tx Module
(ASM+EDGE PAM)
Refer to 4.4
Yes
No
Check RTR & PAD
Check soldering and components
No Problem
Still exist Problem
START
No