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Flow Chart of Troubleshooting
9-2-12. WCDMA1900 Transmitter
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Battery Voltage: 3.8V
(AGC for 23dBm)
Check C221 = 8 dBm ?
Check C219 = 7.5 dBm ?
Check C220 = 5 dBm?
Check L207 = 26 dBm?
Check C224 = 25.5 dBm ?
Check L205 = 24 dBm ?
Check C100 = 23 dBm ?
Tx ON
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
The End
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No
Check the U100
No
Replace RFS201
No
Replace F201
No
Replace PAM201
No
Replace CPL201
No
Replace DUF201
No
Replace RFS102
9-64
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