Samsung SGH-P960 Service Manual page 64

Flow Chart of Troubleshooting
9-2-4. DCS1800 Transmitter
**If you check the tx chain,
Check not only RF Devices but also resistors, inductors and capacitors.
Tx ON
(Level : 0)
battery voltage : 3.8V
Check C123
≤ 2.5V ?
YES
Check R102
≤ 2dBm?
YES
Check C101
≥ 25dBm ?
YES
RFS100 Check
Pin#2 ≥ 30dBm?
YES
Check UCP300
YES
THE END
NO
NO
NO
NO
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Check UCP300
Resolder U200
Resolder or Change PAM100
Resolder or Change RFS100
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