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SGH-P730 Flow Chart of Troubleshooting and Circuit Diagrams
9. GSM Receiver
Normal condition
catch the
channel ?
Yes
Check F601
pin 1 ≥ -65 dbm
?
Check F601
pin 12,13 ≥ -65
dbm ?
Check U600
pin 20,21 ≥
-65dBm ?
Check U600
pin 9, 26 = 2.8V
Resolder or change
U501
No
No
Yes
No
Yes
No
Yes
No
Yes
CONTINOUS RX ON
Check ANT1, C615
Resolder or change
Resolder or change
F601
Resolder or change
C605, C606, L602
Resolder or change
U101 pin 39, C110,R600
2-14
RF INPUT : 62CH
AMP : -50dbm
C629
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