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Flow Chart of Troubleshooting
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9-27
9-17. DCS Transmitter
U100 pin 11,29,36
>=2.8V
Yes
Resolder U100
Check UCP200
END
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Resolder or Change F100
Check F100, OK?
Yes
U101 pin 4,5,6,7
>= 1V
Resolder or Change PAM100
Check ANT Switch
control circuit
Change or Resolder
C132,C112,C113
PAM100 pin1
<= -11dBm
PAM100 pin10
>= 18dBm
F100 pin13
>= 18dBm
Check F100
pin11= L (2.6V), 9=
H
TX ON (5Level)
Resolder RFS100,C103
F100 Pin13
>= 20dBm