LG GD510 - Page 91

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Only for training and service purposes
5. Trouble shooting
GD510 Operational Description Revision A
LG Electronics 95/116 LGE Property
Check TP1 of SW601
with RF Cable and TP2 of C608
TP1 Signal same
as C2?
Replace Mobile SW
(SW601)
Yes
No
Yes
Mobile SW & FEM is OK.
Check Antenna.
Replace BB CHIP (U101)
Control Signal is
OK
f
No
Yes
Check TP3, TP4 of FL601GfG
Replace FEM (FL601)
TP5 Signal is
OK
?
No
Yes
Checking Flow
EGSM TX
Figure 30 Mobile SW
Figure 31 FEM Control Signals
TP2
(
ANT SW2
)
TP1
(
ANT SW1
)