Samsung GT-B7300 Service Manual page 77

9-21. WCDMA2100 Receiver
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Continous Rx ON
RF Input : 10700CH
Amplitude : -50dBm
Normal Condition
Catch the channel?
Check C131 = -56 dBm?
Check C138 = -59 dBm?
Resolder U101 or Change
Yes
Yes
Yes
Yes
The End
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No
Check Antenna Contact
No
Check RFS100 or
(the method like GSM)
No
Replace DUF100
9-53
Flow Chart of Troubleshooting
F100