Samsung SGH-A737 Service Manual page 65

9-2-10. UMTS850 Transmitter
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Tx ON
RF output : 9800 CH
OUT PWR : 22dBm
U104 check
pin#46 ≥ -10dBm
YES
F201 check
pin#1 ≥ -10dBm ?
YES
PAM201 Check
Pin#8 ≥ 24dBm ?
YES
U201 Check
Pin #2 ≥ 22dBm ?
YES
F203 Check
Pin #2 ≥ 22dBm ?
YES
THE END
NO
NO
NO
NO
NO
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U104 Resolder or change
F201 Resolder or change
PAM201 Resolder or change
U201 Resolder or Change
F203 Resolder or Change
9-31
Flow Chart of Troubleshooting