LG KF600w Service Manual page 88

4.2.2.8 Check Mobile S/W
Test Point Circuit Diagram
Test Point Circuit Diagram
RF IN
TP2
RF OUT
TP1
Checking Flow Waveform
Checking Flow Waveform
Start
RF IN
Check pin1(TP1) , 2(TP2)
Mobile S/W is
at U101 . Referring to
OK
Figure 4.2.2(l)
YES
Is it similar ?
NO
Replace U 101
RF OUT
Figure 4.2.2(l)