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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-29
9-13. GSM Receiver
RX ON
Cell Power : -60dBm
F101 Pin13
≥ -65dBm
Yes
Resolder RFS100, C110, L106
No
Yes
No
Check F101
pin9,pin11 = L
F101 1,2
≥ -68dBm
Check ANT Switch
control circuit
No
Yes
Resolder F101
Yes
U104
pin 24 ≥ -70dBm
pin 25 ≥ -70dBm
Resolder C115, C116, L111
No
Yes
U104pin 11,12,16,29,
32,33,36 ≥2.8V
No
U104 pin 4,5,6,7
≥ 0.2Vp_p
No
Check & Resolder
C131,C134,C135
Yes
Yes
Resolder U104
Check UCP200
END