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Flow Chart of Troubleshooting
9-30
9-19. PCS Receiver
Check UCP200
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Resolder U101
or Check pins related to U101
Resolder L110,C116,L135
Resoder U100
Check ANT Switch
control circuit
U101
pin22 >= -70dBm
pin23 >= -70dBm
U101 pin 1,2,3,4
>= 500mV
U100 pin7,8
>= -65dBm
Check U100
pin14 = L, pin13= L
RX ON
RF input : CH center freq
Amp : -50dBm
Yes
No
END
Resolder RFS100, C144, L106
U100 Pin10
>= -65dBm