No Sound/Sound From Only One Speaker/Low Sound Level - Sony SRS-ZR7 Help Manual

Help Guide
Personal Audio System
SRS-ZR7

No sound/Sound from only one speaker/Low sound level

Check that both the speaker and the connected device are turned on.
Check that the volume of both the speaker and the connected device are not too low.
Check that music is playing back on the connected device.
If the device is connected to the AUDIO IN jack, check that both stereo mini plugs of the audio cable are firmly inserted into
the speaker and the connected device.
If the device that is connected to the AUDIO IN jack is monaural, sound will only be output from the left speaker.
Keep the speaker away from metal objects.
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