LG -E450 Service Manual page 99

4. TROUBLE SHOOTING
4.3.1.4 Checking RF Flow(SAW filter)
START
Check TP1(L180) for 900band at FL101
No
Check TP2(L182) for 850band at FL101
Replace FL101
Check if there is any major difference referring
To Figure 4.1.1(b) Is any signal detected at
that point?
Yes
To Figure 4.1.1(b) Is any signal detected at
that point
No
Check L180, L181, L107, L182, L183, L110
Yes
SAW filter is OK. Replace main B/D.
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