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Flow Chart of Troubleshooting
9-38
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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 F201
pin#1
≥
-5dBm
Resolder or change U200
YES
Check C255
≥
-5dBm ?
Resolder or change F201
NO
YES
NO
Resolder or Change F202
Check L203
≥
20dBm ?
YES
NO
Resolder or Change PAM100
Check C101
≥
20dBm ?
YES
Resolder or Change RFS100
NO
Check RFS100
pin #2≥
20dBm ?
YES
THE END
YES
Check UCP300