LG KS660 Service Manual page 110

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with RF Cable and TP2 of C606
Mobile SW (R403)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Checking Flow
Check TP1 of SW600
TP1 Signal same
as TP2?
Yes
Check TP3, TP4 of FL600 ?
Yes
Control Signal is
OK ?
Yes
TP5 Signal is
OK ?
Yes
Mobile SW & FEM is OK.
Check Antenna.
No
Replace Mobile SW
(SW600)
?
Replace BB CHIP (U100)
No
Replace FEM (FL600)
No
EGSM TX
EGSM TX
FEM Control Signals
FEM Control Signals
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4. TROUBLE SHOOTING
TP2(ANT SW2)
TP2(ANT SW2)
TP1(ANT SW1)
TP1(ANT SW1)
LGE Internal Use Only

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