LG -E455 Service Manual page 71

4.2.1.4 Checking RF signal path (DPX)
Check TP1(L120) at FL103
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
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that point?
Yes
Is any signal detected at
that point?
Yes
No
No
Figure 4.1.1 (b)
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4. TROUBLE SHOOTING
Check C164, L120
Replace FL103
Only for training and service purposes