LG VX9100 Service Manual page 69

VX9100
4.2.1.4 Check RF Tx Dual SAW (DCN)
Test Point
(Dual PAM)
Checking Flow
Checking Flow
Start
Check pin1(TP1)
at F 101 . Referring to
Figure 4.2.1(g)
Is it similar ?
Check pin9(TP2)
at F 101 . Referring to
Figure 4.2.1(h)
Is it similar ?
Replace F 101
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Only for training and service purposes
Test Point
U105
D_OUT
F101
D_IN
U109
(RFT6150)
YES
RF Tx Dual SAW is
YES
NO
Check
U109(RFT6150)
OK
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Circuit Diagram
Circuit Diagram
TP2
TP1
Waveform
Waveform
D_IN fed up with CW signal
D_IN
Figure 4.2.1(g)
D_OUT
Figure 4.2.1(h)
LGE Internal Use Only