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SGH-E700 Flow Chart of Troubleshooting
7-
17
12. GSM Receiver
F101 Pin8
>= -65dBm
Resolder RFS100, C100
END
No
Yes
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Check F101
pin11 = L, pin2 = L
F101 pin10
>= -65dBm
F100 pin1
>= -70dBm
U100 pin5, 6, 7, 8
>= 1V
U100
pin33 >= -70dBm
pin34 >= -70dBm
Check ANT Switch
control circuit
Resoder F101
Resolder F100, C106, L102
Resolder L101, C105, C107
Check U100 pin26
(RF freq.*2)+100kHz
>=-30dBm
Check & Resolder
U100, C121, R110
RF13MHz, RF PSU Part
Resolder U100
R101, R102, R105,
R106 >= 1V
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Check UCP200