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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-21
9-12. GSM Receiver
Check ANT Switch
control circuit
Resolder F100
Check & Resolder
C117,L123,C126
And PMU Part
Resolder U102
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
F100 Pin13
≥ -65dBm
No
Resolder CN205,C103,L102
Yes
F100 1,2
≥ -68dBm
Check F100
pin9,pin11 = L
No
No
Yes
Yes
No
Resolder C108, C109, L105
U101
pin 24 ≥ -70dBm
pin 25 ≥ -70dBm
Yes
No
U101pin 16,17,29
32,36 ≥2.8V
pin10≥1.8V
U101 pin 4,5,6,7
≥0.2Vp_p
No
YesYes
Check UCP200
END