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Flow Chart of Troubleshooting
9-34
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9-2-7. UMTS 2100 Receiver
**If you check the Rx chain,
Check not only RF Devices but also resistors, inductors and capacitors..
Continuous RX ON
RF Input : 10700 CH
Cell Pwr : -50dBm
Check C105
≥
-65dBm ?
Resolder RFS101
NO
YES
YES
Check U200
Check L200
≥
-65dBm ?
NO
Resolder PAM100
YES
Check C209
≥
-65dBm ?
Check & Resolder DUP200
NO
YES
Check C219
≥
-55dBm ?
NO
Check & Resolder PAM100
YES
The End