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Flow Chart of Troubleshooting
9-26
9-13. GSM Receiver
RX ON
RF input : 62CH
Amp : -50dBm
Yes
Module100 pin8
>= -65dBm
No
Resolder RFS101, C101
Yes
Module100 pin5,pin6
>= -65dBm
Check Module100
pin10,pin12 = L
No
No
Check ANT Switch
control circuit
Yes
Resolder Module100
Yes
UPL102
pin29 >= -70dBm
pin30 >= -70dBm
No
Resolder C103, C105, L106
Yes
No
No
Check & Resolder
UPL102, C109
RF26MHz, RF PSU Part
Check UPL102
pin23,26,28 >=2.7V
UPL102 pin7,8,9,10
>= 1V
Yes
Yes
Resolder UPL102
R117,R118,R119,R120
>= 1V
Yes
Check UCP200
END
Summary of Contents for SGH-E500
Page 32: ...8 PCB Diagrams 8 1 8 1 Top ...
Page 33: ...PCB Diagrams 8 2 8 2 Bottom ...