LG KP500 - Page 98

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5. Trouble shooting
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Only for training and service purposes
Check TP1 of SW600
with RF Cable and TP2 of C606
TP1 Signal same
as TP2?
Replace Mobil e SW
(SW6
00)
Yes
N
o
Yes
Mobil e SW & FEM is OK.
Check Antenna.
Replace BB CHIP (U100)
Control Signal is
O
K
N
o
Yes
Check TP3, TP4 of FL600
Replace FEM (FL600)
TP5 Signal is
OK
?
N
o
Yes
EGSM TX
TP2
(
ANT SW2
)
TP1
(
ANT SW1
)
Figure 30 Mobile SW
Checking Flow
Figure 31 FEM Control Signals