Sony CAS-1 Precautions/Troubleshooting page 11

Sound is not output immediately after the unit turns on.
 It takes time for sound to output. Wait until the USB-A input LED
stops flashing and remains lit.
It takes time until the unit is available for a playback.
 It takes time for sound to output. Wait until the USB-A input LED
stops flashing and remains lit.
The USB-A input LED keeps flashing and does not remain lit.
 A non-compatible device is connected to the A (USB-A) port. The
LED remains lit after removing the device.
USB-B
The USB device is not recognized.
 Turn off the unit and remove the USB device, and turn on the unit
again. Then, reconnect the USB device.
 Connect a compatible USB device.
 The USB device might not be working properly. Refer to the
operating instructions of the USB device.
There is no sound, or the sound is output from the speakers of the
connected PC.
 Check that the sound format of the file is the supported one
(page 13).
 If you connect the PC to the B (USB-B) port on the rear side of the
unit, make sure the dedicated driver is installed to the PC.
 Check that the sound device setting of your computer is set to "Sony
Audio." If not, set it correctly.
The following setting procedures are examples. The procedures
and displays may change depending on the usage environment of
your computer.
 For Windows 7/Windows Vista:
Click the [Start] menu, select [Control Panel], [Hardware and
Sound], [Sound], [Playback] tab, select [Sony Audio] for the
playback device, then click [Set default].
 For Windows 8/8.1:
Display the charm bar on the right side of the desktop and
select [Settings], [Control Panel], [Hardware and Sound],
[Sound], [Playback] tab, select [Sony Audio] for the playback
device, then click [Set default].
 For Macintosh:
Click the [Apple] menu, select [System Preferences], [Sound],
[Output] tab, then select [Sony Audio] for [Select a device for
sound output].
Sound skips.
 Depending on the actions of other active software, the sound might
skip.
The sound of the music playback software of the PC is not output.
 Turn up the volume of the music playback software.
 Deactivate the muting function by pressing the MUTING button or
VOL +/– buttons on the remote.
 Do not activate multiple music playback software.
There is noise or distorted sound on the music playback software
of the PC.
 Do not activate multiple music playback software.
Cannot play back the songs (files) of multi channels.
 Only 2-channel songs (files) are available.
Remote
Cannot operate the unit with the remote.
 Pull out the insulation sheet from the remote when you use it for the
first time (Refer to "What's in the box" of the Operating Instructions).
 Point the remote to the remote sensor (the circuit of the  (on/
standby) button) of the unit.
 Remove any obstacles in the path between the remote and the unit.
 Replace the battery in the remote with a new one (page 7).
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