Earphone Part - Samsung SGH-ZV50 Service Manual

Flow Chart of Troubleshooting

9-8. Earphone Part

Receiver does not work
U601 pin#16 is "H" :
TP : nSD_EARAMP
U601 pin 1, 9 (R727) = "H"?
U601 pin 8, 14 ="H"
EAR500 pin 4, 5, 6 = short?
Is Receiver working?
Yes
Yes
Yes
Yes
Yes
Yes
END
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No
Resolder UCP300
No
Resolder R727 and
Resolder U601 if Fail again
No
1. Check U503 pin 14 (C549) = 2.8V
No
Resolder EAR500
No
Replace the Receiver
9-14