LG KS660 Service Manual page 100

Mobile SW (R403)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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
TP5~8 Signal is
OK ?
Yes
Mobile SW & FEM is OK.
Check Antenna.
Replace Mobile SW
No
(SW600)
Replace U100
No
No
Replace FEM (FL600)
DCS/PCS RX
FEM Control Signals
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4. TROUBLE SHOOTING
FE1
FE2
LGE Internal Use Only