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Flow Chart of Troubleshooting
9-37
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9-2-8. UMTS 2100 Transmitter
**If you check the tx chain,
Check not only RF Devices but also resistors, inductors and capacitors.
Tx ON
RF output : 10700 CH
OUT PWR : 23dBm
NO
Check F200
pin#1
≥
-5dBm
Resolder or change U200
YES
Check C207
≥
-5dBm ?
Resolder or change F200
NO
YES
Resolder or change PAM200
NO
Check L201
≥
20dBm ?
YES
NO
Resolder or Change DUP200
Check L200
≥
20dBm ?
YES
NO
Resolder or Change PAM100
Check C105
≥
20dBm ?
YES
Resolder or Change RFS100
NO
Check RFS100
pin #2≥
20dBm ?
YES
THE END
YES
Check UCP300
Check F201
pin #2
≥
20dBm ?
YES
NO
Resolder or change F201