3.1.2.4 Checking RF signal path (Duplexer)
Check TP1(C1620) at FL1601
Check if there is any major difference referring
To Figure 3.1.2(d) Is any signal detected at
Is any signal detected at that point?
All WCDMA_B1 Rx check is complete.
If the phone sill do not work ,replace main board
TP1
LGE Internal Use Only
START
that point?
Yes
Yes
Center Frequency :
942.4MHz
Figure 3.1.2 (d)
No
Check L1620, C1619, L1604
No
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3. TROUBLE SHOOTING
Replace FL1601
Only for training and service purposes