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Flow Chart of Troubleshooting
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7-
15
7-8. Receiver Part
U601 pin2 = L during
call established?
Ceck U601
END
No
Yes
Yes
Receiver does not work
Is Receiver working?
Replace the Receiver
No
Yes
No
Resolder or replace
U601
Yes
U601 pin 3, 9 = 1.5?