LG KF510C Service Manual page 104

with RF Cable and TP9 of C403
Check TP1, TP2 of FL400 ? ?
Mobile SW & FEM is OK.
Mobile SW (R403)
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Only for training and service purposes
Check TP10 o f SW400
TP10 Sign al
same as TP9?
Yes
Yes
Cont ro l Sign al is
OK ?
Yes
TP5~8 Sign al is
OK ?
Yes
Check A ntenna.
No
Replace Mobile SW
(SW400)
Check NC7WV16P6X
(TP3, TP4 fo r U400)
No
Replace FEM (U400)
No
EGSM RX
FEM Control Signals
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5. Trouble shooting
VC1
VC2
LGE Internal Use Only