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10-1-8. Headset Part
Headset Function does not work
Check the
Pin 20,21 of UCD401 = some
signal on
Check the
Pin 35,36 of UCD401=
some signal on
Check the
Pin 5,7 of U409 = some
signal on
Check the
TA409,TA410 =
some signal on
Check the
Ear401 connection = Out of
order or not
Check the Ear mic
= Out of order or not
END
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Yes
Yes
Yes
Yes
Yes
Yes
Flow Chart of Troubleshooting and Circuit Diagrams
No
Check UCD401 or Resolder
No
Check UCD401 or Resolder
No
Check U409 or Resolder
No
Resoldering TA409,TA410
No
Resoldering Ear401
No
Use other Ear mic
10-19
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