Flow Chart of Troubleshooting
9-
21
9-12. GSM900 Receiver
C100
≥ -65dBm
Resolder RFS100
END
No
Yes
RX ON
RF input : CH center freq
Amp : -50dBm
C111
≥ -65dBm
U100 pin
11,12,13,14
≥ 500mV
L103
≥ -70dBm
Resolder F100
Resolder U100
or Check pins related to U100
Yes
Yes
Yes
Yes
No
No
No
Check U1102
Resolder U101
Summary of Contents for SGH-Z310
Page 37: ...8 PCB Diagrams 8 1 8 1 PCB Top Diagram ...
Page 38: ...PCB Diagrams 8 2 8 2 PCB Bottom Diagram ...
Page 41: ...Flow Chart of Troubleshooting 9 3 ...
Page 45: ...Flow Chart of Troubleshooting 9 7 ...
Page 67: ...Flow Chart of Troubleshooting 9 29 ...