18
TROUBLESHOOTING
CHAPTER 6
TROUBLESHOOTING
If you are encountering problems with using your Sonoma M1 system, it could be the result of something
simple. Please consult the following checklist first, and perform only the specific remedy for a particular
symptom. If the remedy does not resolve your problem, please contact our Customer Service team (see
Page 20) to assist you further. There are no user-serviceable parts inside, and any attempt at repair will
invalidate the warranty.
SYMPTOM
REMEDY
Red light on amplifier/DAC
Headphone cable is not connected properly either to the
amplifier/DAC unit or to each ear cup. Please check for a
good connection.
No sound via analog connection
First check whether the analog/digital source selector is in
the analog position. If it is, then check that the Hi/Low rear
panel selector switch is in the appropriate position. If it is,
then check your source component to ensure it is operating
correctly (is the volume set to mute on a portable audio
player, for example?).
No sound via S/PDIF digital input
First check whether the analog/digital source selector is
in the digital position. If it is, then check whether the S/
PDIF digital output of your source has NOT been turned off
via a menu function. If not, try a different S/PDIF cable to
eliminate breakages/connection issues.
No sound via USB input
First check whether the analog/digital source selector is
in the digital position. If it is, then check whether a S/PDIF
signal is also present—if it is, either power off the S/PDIF
source or use a menu function to disable the S/PDIF digital
output. If a S/PDIF signal is NOT present, check whether the
XMOS USB driver has been selected on your computer and
in your playback software. Check also whether the output
has been muted within your playback software!
Stuttering/glitching in USB playback
Is the USB connection made via a USB hub? We have found
that some inexpensive or poor quality hubs can introduce
playback issues. Try connecting the M1 directly to your
computer. Very long USB cables (> 2 meter) and some poor
quality USB cables can also compromise USB connectivity,
and should be avoided.
If no hub is used, check the activity level/number of open
programs on your computer, it could be that something
else needs computer resources which interrupts playback.
