Samsung GT-i5700 Service Manual page 71

9-20. WCDMA900 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 C176 = 8 dBm ?
Check C177 = 5 dBm?
Check C194 = 26 dBm?
Check C186 = 24 dBm ?
Check C100 = 23 dBm ?
Tx ON
Yes
Yes
Yes
Yes
Yes
Yes
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No
Check the U100
No
Replace F103
No
Replace PAM103
No
Replace DUF102
No
Check RFS100 or
(the method like GSM)
9-47
Flow Chart of Troubleshooting
F100