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Flow Chart of Troubleshooting
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9-13
9-8. Earphone Part
U601 pin H3 "L"?
Check UCP303
END
No
Yes
Yes
Receiver does not work
Replace the Receiver and check UCP303
No
Yes
Is Receiver working?
No
Resolder U601
Yes
No
Resolder IFC400
IFC400 pin 5, 7 short?
Yes
U602 pin C7, C8 ≥ 1V?