LG MG120a Service Manual page 44

4. TROUBLE SHOOTING
(3) Checking Mobile SW & FEM
TEST POINT
Figure 8
CIRCUIT
VC_DCSPCS(VC1)
U104
VC_GSM(VC2)
WAVEFORM
(VC_EGSM)
(VC1) (VC1) (VC1)
(VC_GSM)
(VC_DCSPCS)
(VC_DCSPCS)
(VC2) (VC2) (VC2)
Graph 5(a) GSM Tx mode
(VC_GSM)
(VC_EGSM)
(VC1) (VC1) (VC1)
Table 4-2
(VC2) (VC2) (VC2) (VC_DCSPCS)
(VC_DCSPCS)
Graph 5(b) DCS,PCS Tx mode
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R104
U104.12
U104.10
R103