Table of Contents
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Flow Chart of Troubleshooting
9-8. Speaker Part
(When MP3 file is played)
U502 Pin 1A, 2A ≥ 2V?
(When MP3 file is played)
(When MP3 file is played)
Speaker does not work
Yes
C513, C515 ≥ 2V?
Yes
Yes
HDC600 Pin 56, 58 ≥ 2V?
Yes
Check the signals of
speaker input
OK
Is Speaker working?
Yes
END
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No
No
Resolder U502, C513, C515
No
No signal
Check the circuit related to
No
9-14
Check UCP300
Resolder U501
melody signal
Change the Speaker
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