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Flow Chart of Troubleshooting
9-2-9. WCDMA900 Receiver
**Please Check the Main Antenna ,rear, front case, and screws, and then follow the chain below.
If you check the tx chain, Check the not only RF Device but also resistor, inductor and capacitor.
Continous Rx ON
RF Input : 4408 CH
Amplitude : -50dBm
Normal Condition
Catch the channel?
Check C201 = -56 dBm?
Check C229 = -59 dBm?
Resolder U100 or Change
Yes
Yes
Yes
Yes
The End
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No
Check Antenna Contact
No
Replace RFS102
No
Replace DUF200
9-60
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