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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
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EGSM TX
TP2(ANT SW2)
TP1(ANT SW1)
Figure 30 Mobile SW
Figure 31 FEM Control Signals
Check TP1 of SW600
with RF Cable and TP2 of C606
TP1 Signal same
as TP2?
Repl ace Mobil e SW
(SW600)
Yes
No
Yes
Mobil e SW & FEM is OK.
Check Antenna.
Replace BB CHIP (U100)
Control Signal is
OK
No
Yes
Check TP3, TP4 of FL600
Replace FEM (FL600)
TP5 Sig nal is
OK ?
No
Yes
Checking Flow