Blu STUDIO 5.0S II, Руководство по обслуживанию

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3.3 Earphone Circuit
In this circuit, there are earphone_speaker and earphone_MIC, two signals channels.
If the earphone is good, plugged into the audio jack, but it doesn’t work normally,
such as no speaker audio, no mic audio please check the circuit below:
The EINT_HP is the interrupt request from the plugged earphone to the CPU.