Checking Mobile S/W & Fem Circuits - LG T5100 Service Manual

4.3.6 Checking Mobile S/W & FEM circuits
- See RX Part "Check Mobile S/W & FEM circuit"
Checking Flow
Check Pin 1,2 of
SW404 with
RF Cable : Open?
Yes
GSM?
VC1 : High
VC2 : Low
VC3 : Low
Yes
Check RF Level of
FEM Output
FL700.13
Yes
EGSM : ~33dBm
DCS : ~30dBm
Yes
FEM is OK
Redownload
The Phone S/W
No
Replace SW404
For this RF level test case,
Rx Stand alone mode
is needed
DCS?
No
VC1 : Low
VC2 : High
VC3 : High
No
Change FL700
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4. RF PART TROUBLESHOOTING