LG GT350 - Page 102

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4. TROUBLE SHOOTING
LG Electronics 99/115 LGE Property
Check
T
P1 of SW600
with RF Cable
and TP2 of C606
T
P1 Signal same
as TP2
?
Replace Mobile SW (SW600)
Yes
No
Yes
Mobile SW & FEM is OK.
Check Antenna.
Replace BB CHIP (U100)
Control Signal is
OK ?
No
Yes
Check
T
P3, TP4 of FL600 ?
Replace FEM (FL600)
T
P5 Signal is O
K
?
No
Yes
Checking Flow
EGSM TX
Figure 31 FEM Control Signals
Figure 30 Mobile SW (R403)
TP2(ANT_SW2)
TP1(ANT_SW1)