LG T5100 Service Manual page 76

Checking Flow
Check Pin 1,2 of
SW404 with
RF Cable : Open?
Yes
VC1 : Low
VC2 : Low
VC3 : Low
Yes
Check RF Level of
FEM Output
For EGSM : FL700.1
For DCS : FL700.3
Yes
Pin1 : ~ -67dBm
Pin3 : ~ -67dBm
Yes
FEM is OK
Go to the next stage
No
Replace SW404
For this RF level test case,
Rx Stand alone mode
is needed
No
Redownload
The Phone S/W
No
Change FL700
On the just one line of the
balanced Signal Line
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4. RF PART TROUBLESHOOTING