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10-1-6. Speaker Part
Speaker does not work
Is there sinewave
signal on the UCD401 pin 39,
during window
media playing?
Check the
Pin 1,13 of U401 is High
Is there signal
on the U401 Pin 4,6,16,18
during window media playing
Check the speaker
= out of order or not
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Yes
41
Yes
Yes
Yes
Yes
END
Flow Chart of Troubleshooting and Circuit Diagrams
No
Check UCD401 or Resolder
No
Check U401 or Resolder
No
Check U401 or Resolder
No
Replace the speaker
10-13
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