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Flow Chart of Troubleshooting
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7-8
7-5. Microphone Part (Main)
Check the connection status
of HDC704
Check the inductors
L711 & L710
Re-insert the connector (HDC704)
Resolder the L711 and L710
END
No
Yes
Yes
Yes
Yes
No
Check MIC_BIAS
= ' H' ?
No
Resolder R500, R501, TA502, R505, R506
Microphone does not work
Yes
Check MIC_SEL2
= 'L' ?
No
Check the related circuit
Check the MIC
No
Replace the SPK+MIC module
Yes