Earphone Part - Samsung SGH-Z310 Service Manual

Flow Chart of Troubleshooting

9-8. Earphone Part

Receiver does not work
Yes
No
Resolder R726
U705 pin#16 is "H"
Yes
No
Resolder U702
U702 pin 1, 9 = "H"?
Yes
No
Resolder C749, C750, R829, 830
U702 pin 8, 14 ="H"?
Yes
No
Resolder EAR700
EAR700 pin 4, 5, 6 = short?
Yes
No
Replace the Receiver
Is Receiver working?
Yes
END
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