Sony SVF15N26CXB - Manual (Page 199)

Personal Computer
VAIO Fit 13A/14A/15A
SVF13N2/SVF14N2/SVF15N2
Microphone
What should I do if my microphone does not work?
What should I do if I hear microphone feedback from speakers when using my microphone?
You might be looking for the following topics:
Adjusting the Microphone Volume
Notes on use
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User Guide
Troubleshooting
199