LG KE820 - Page 112

5. Trouble shooting
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Checking Flow
Figure 32 Mobile SW Figure 33 FEM Control Signals
Check Pin 1, 2 of SW401
with RF Cable
Signal is OK?
Replace Mobile SW
(SW401)
Yes
No
Yes
Mobile SW & FEM is OK.
Check Antenna.
Check PMB8876 (U102)
Control Signal is
OK?
No
Yes
Check Pin 20, 21, 22 of
FL308?
Replace FEM (FL308)
Pin 16, 17 or 14,
15
No
Yes
EGSM TX
ANT SW
ANT SW2
ANT SW