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Flow Chart of Troubleshooting
9-51
9-20. WCDMA850 Transmitter
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Yes
Yes
Yes
Replace DUF102
Replace F103
No
No
Check C110 = 23 dBm ?
Check C1106 = 24 dBm ?
No
Check C1117 = 26 dBm?
Replace PAM103
Check RFS100 or
F100
(the method like GSM)
Check the U101
No
No
Yes
Yes
Yes
Check C196 = 8 dBm ?
Check C197 = 5 dBm?
The End
Tx ON
Battery Voltage: 3.8V
(AGC for 23dBm)
Summary of Contents for GT-B7300B
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