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Samsung GT-B7320L Servise Manual page 67

Gsm telephone
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Flow Chart of Troubleshooting
9-2-7. PCS1900 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 : 661 CH
Amplitude : -50dBm
Normal Condition
Normal Condition
Catch the channel?
Catch the channel?
Check L114 >= -55 dBm?
Check L114 >= -55 dBm?
Resolder U100 or Change
Resolder U100 or Change
Yes
Yes
Yes
Yes
Yes
Yes
The End
The End
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
No
Check Antenna Contact
Check Antenna Contact
No
No
Replace RFS102
Replace RFS102
9-52

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