Flow Chart of Troubleshooting
9-6. Speaker Part(Melody)
Speaker does not work
Is the terminal of speaker
OK?
Yes
Check the
SPK_P & SPK_N "HIGH"
Yes
Check the output circuit of U401(Audio AMP)
Yes
Check the input circuit of
U401(Audio AMP)
Yes
Is speaker OK?
Yes
END
No
check the specker
①
No
Resolder SPK_P & SPK_N
②
No
Change or resolder around U404
③
No
Change or resolder around U403,
U404
No | Change speaker |
|
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