Check Dcn Rf Tx Saw - LG VX8610 Service Manual

VX8610

4.2.1.4 Check DCN RF Tx SAW

Test Point
Test Point
RF_IN
F104
RF_OUT
Checking Flow
Checking Flow
Start
Check pin1(TP1)
at F 104 . Referring to
Figure 4 .2 .1(g)
Is it similar ?
Check pin4(TP2)
at F 104 . Referring to
Figure 4 .2 .1(h)
Is it similar ?
NO
Replace F 104
Copyright © 2007 LG Electronics. Inc. All right reserved
Only for training and service purposes
Check
U111(RFT6150)
YES
RF Tx SAW is
OK
YES
- 67 -
Circuit Diagram
Circuit Diagram
TP2
Waveform
Waveform
RF_IN fed up with CW signal
RF_IN
Figure 4.2.1(g)
RF_OUT
Figure 4.2.1(h)
LGE Internal Use Only
TP1