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Flow Chart of Troubleshooting
9-28
9-17. DCS Receiver
END
Check UCP200
U100 Pin10
>= -65dBm
Resolder RFS100, C144, L106
No
Yes
RX ON
RF input : CH center freq
Amp : -50dBm
Check U100
pin14 = L, pin13= L
U100 pin5,6
>= -65dBm
U101 pin 1,2,3,4
>= 500mV
U101
pin24 >= -70dBm
pin25 >= -70dBm
Check ANT Switch
control circuit
Resoder U100
Resolder L109,C113,L136
Resolder U101
or Check pins related to U101
Yes
Yes
Yes
Yes
Yes
No
No
No
No