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Flow Chart of Troubleshooting
9-18
9-11. GSM900 Receiver
C108
≥ -65dBm
Resolder RFS100
END
No
Yes
RX ON
RF input : CH center freq
Amp : -50dBm
C158
≥ -65dBm
U102 pin
11,12,13,14
≥ 500mV
L106
≥ -70dBm
Resolder F100
Resolder U102
or Check pins related to U102
Yes
Yes
Yes
Yes
No
No
No
Check U102
Resolder U100
Summary of Contents for SGH-Z400
Page 32: ...8 PCB Diagrams 8 1 Top ...
Page 33: ...PCB Diagrams 8 2 Bottom ...