Motorola Moto Z Play Troubleshooting Manual page 98

Speaker Boost IC Circuit
If the speaker output sound include handset voice call rx voice is not functioning, even though the speaker part and circuit is no
problem.
- Check input battery voltage at C6421.
- Check input analog power at C6418, it should be 1.8Vdc.
- Check voltage boost output level at C6425 during play audio (Multimedia or voice call), it should be battery voltage to 8.5Vdc.
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