Samsung SGH-T429 Service Manual page 55

9-14. DCS Receiver
RX ON
RF input : CH center freq :
Amp : -50dBm
Yes
F100 Pin7
>= -65dBm
Yes
F100 Pin3
>= -68dBm
Yes
F100 pin3
>= -70dBm
Yes
U101 pin 4,5,6,7
>= 1V
Yes
Check UCP200
END
+67.7kHz
No
Resolder
No
No
Resolder
No
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CN100,C104
Check F100
pin10,pin12 = L
Yes
C108, C109, L110
U101 pin12,13,28,29
>=2.8V
Yes
9-23
Flow Chart of Troubleshooting
No
Check ANT Switch
control circuit
Resolder F100
No
Check & Resolder
U101, RF PSU Part
Resolder U101