SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-33
9-14. GSM900 Receiver
RX ON
RF input : CH center freq
Amp : -50dBm
Yes
No
Resolder RFS100, C102, L100
MODULE1 Pin10
>= -65dBm
Yes
Check ANT Switch
control circuit
MODULE1 pin3,4
>= -65dBm
Check MODULE1
pin13 = L, pin14= L
No
No
Yes
Yes
Resoder MODULE1
No
Resolder L101,L103,L104
U101
pin27 >= -70dBm
pin28 >= -70dBm
Yes
No
Resolder U101
or Check pins related to U101
U103 pin 1,2,3,4
>= 500mV
Yes
Check UCP200
END