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Flow Chart of Troubleshooting
9-20
9-12. GSM Receiver
RX ON
RF input : 62CH center freq : 947.4MHz
Amp : -50dBm
Yes
F100 Pin13
>= -65dBm
No
Resolder RFS100, C103, L106
Yes
Check ANT Switch
control circuit
F100 pin1,2
>= -68dBm
Check F100
pin9,pin11 = L
No
No
Yes
Yes
Resolder F100
No
Resolder C108, C109, L105
U101
pin 24 >= -70dBm
pin 25 >= -70dBm
Yes
No
U101 pin 11,12
16,17,32,33>=2.8V
U101 pin 4,5,6,7
>= 1V
No
Check
U101, OSC100
RF26MHz, RF PSU Part
Yes
Yes
Resolder U101
Check UCP200
END
Summary of Contents for SGH-E200
Page 31: ...8 PCB Diagrams 8 1 Top ...
Page 32: ...PCB Diagrams 8 2 Bottom ...