LG KP500 Service Manual page 107

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