LG -E450 Service Manual page 86

4.2.2.4 Checking RF signal path (DPX)
Check TP1(L169) at FL102
Check if there is any major difference referring
To Figure 4.1.1(b) Is any signal detected at
DPX is OK. See next page to check PAM
Center Frequency : 836.4MHz
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that point?
Yes
Is any signal detected at
that point?
Yes
Figure 4.1.1 (b)
No
Check L169, L116
No
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4. TROUBLE SHOOTING
Replace FL102
Only for training and service purposes