Sony DSX-B710D - No Sound or the Sound Is very Low

Help Guide
In-Car Receiver
DSX-B700/DSX-B700W/DSX-B710D
No sound or the sound is very low.
The position of the fader control [FADER] is not set for a 2-speaker system.
The volume of the unit and/or connected device is very low.
Increase the volume of the unit and connected device.
5-004-923-11(3) Copyright 2019 Sony Corporation
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