Moto X Pure Edition/Moto X Style
Baseband TROUBLESHOOTING GUIDES
MOTOROLA CONFIDENTIAL
If the Quaternary MIC is not functioning …
- Check MIC bias at C4530 or C4534 or C4533. This should be 1.7~1.8V when the microphone is
enabled.
- Check the 4
th
microphone sealing grommet on the 4
th
MIC part. If the grommet has been
assemble abnormally, the MIC hole could be blocked while it has been assembled.
- Check the microphone output at C4531 or C4532. The AC amplitude should increase (Output DC
bias should be around 0.7V), when audio is present.
Quaternary Microphone
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