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Flow Chart of Troubleshooting and Circuit Diagrams
9-1-8. Headset Part
Headset function does not work
Check R227 is LOW ?
Mic is not operational?
Earphone is not operational?
END
YES
YES
YES
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NO
Check the headset device,
1. Check the mic path from earjack
NO
to MIC2P & MIC2N
2. Check the bias circuit
NO
Check the ear path from earjack
to EAR_R & EAR_L
9-17
or R227 crack
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