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SGH-E630 Flow Chart of Troubleshooting
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8. Receiver Part
U702 pin 1, 5 = 1.5V?
Resolder R727, R730, U702
END
No
Yes
Yes
Receiver does not work
CN606 pin 23,25 = 1.5V?
Replace the CN606
No
Yes
Is Receiver working?
Replace the Receiver
No
Yes
No
Resolder U702
Yes
No
Resolder or replace U702
U702 pin 4, 16 = 1.5V?
Yes
CN604 pin 8, 9 = short?
No
Resolder CN604
Yes
Check the soldering of the
speaker FPC
No
Modufy the speaker FPC soldering
Yes
U702 pin 2, 10 = "H"?