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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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7-25
7-12. GSM Receiver
Yes
F102 Pin8
>= -65dBm
No
Resolder RFS100,
RFS101,C101,L107
Yes
Check ANT Switch
control circuit
U102 pin29, 30
>= -68dBm
Check F102
pin10,pin12 = L
No
No
Yes
Yes
Resolder F102
No
Resolder C104, L105, C107
U102
pin LBIA >= -
70dBm
Yes
No
L100,R111,R101 >=2.
7V
U102 pin 7,8,9,10
>= 1V
No
Check & Resolder
U102
RF26MHz, RF PSU Part
Yes
Yes
Resolder U102
Check UCP200
END
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm