Sony CMT-SBT40D Operating Instructions Manual page 31

DVD/CD-DA/MP3/WMA
"LOCKED" appears in the display window 
and the disc cannot be removed from the
disc slot.

The tray lock feature is activated. Turn the
feature off (page 13).
The disc or file will not play.

The disc has not been finalized (a CD-R or CD-
RW disc to which data can be added).
The sound skips, or the disc will not play.

The disc may be dirty or scratched. When the
disc is dirty, wipe it clean.

Move the system to a location away from
vibration (for example, on top of a stable
stand).
Play does not start from the first track or file.

Make sure the current play mode is correct. If
the play mode is "SHUFFLE" or "PROGRAM,"
change the setting (page 13).
Starting playback takes more time than
usual.

The following discs can increase the time it
takes to start playback:
 a disc recorded with a complicated tree
structure
 a disc recorded in multi-session format
 a disc that has many folders
Picture
There is no picture.

The video connecting cord is not connected
securely.

The unit is not connected to the correct TV
input jack.

The system is not selected via the video input
of the TV.

Make sure you connect the system and your
TV using the video cord (supplied) so that you
can view the pictures.
Even though you set the aspect ratio in "[TV
Type]" under "[SCREEN] settings," the
picture does not fill the TV screen.

The aspect ratio is fixed on the disc.
Color irregularity occurs on the TV screen.

The system's speakers contain magnetic
parts, so magnetic distortion may occur.
When color irregularity occurs on the TV
screen, check the following items.
 Install the speakers at least 0.3 meters away
from your TV set.
 If the color irregularity persists, turn off the
TV set once, then turn it on after 15 to 30
minutes.
 Reposition the speakers farther away from
your TV set.
The [TV System] setting does not match
your TV.
 Reset the setting (see "[Default]" under
"[PREFERENCE] settings").
USB device
For details on compatible USB devices, see
"Compatible USB devices and versions"
(page 35).
An unsupported USB device is connected.

The following problems may occur.
 The USB device is not recognized.
 File or folder names are not displayed on
this system.
 Playback is not possible.
 The sound skips.
 There is noise.
 A distorted sound is output.
There is no sound.

The USB device is not connected correctly.
Turn off the system, and then reconnect the
USB device.
There is noise, skipping, or distorted sound.

An unsupported USB device is connected.
Connect a supported USB device.

Turn off the system, then reconnect the USB
device and turn on the system.

The music data itself contains noise, or the
sound is distorted. Noise may have been
entered when creating music data due to the
conditions of the computer. In this case,
delete the file and send the music data again.

The bit rate used when encoding the files was
low. Send files encoded with higher bit rates
to the USB device.
31 GB