LG VX9100 Service Manual page 83

VX9100
4.2.2.4 Check RF Tx Dual SAW
Test Point
(Dual PAM)
Checking Flow
Checking Flow
Start
Check pin4(TP1)
at F 101 . Referring to
Figure 4.2.2(g)
Is it similar ?
Check pin6(TP2)
at F 101 . Referring to
Figure 4.2.2(h)
Is it similar ?
Replace F 101
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Only for training and service purposes
Test Point
U105
P_OUT
P_IN
F101
U109
(RFT6150)
YES
RF Tx Dual SAW is
YES
NO
Check
U109(RFT6150)
OK
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Circuit Diagram
Circuit Diagram
TP2
Waveform
Waveform
D_IN fed up with CW signal
P_IN
Figure 4.2.2(g)
P_OUT
Figure 4.2.2(h)
LGE Internal Use Only
TP1