Clarion DXZ785USB Owner's Manual page 44

Problem
No sound heard
Sound is
interrupted or has
noise.
The device isn't
recognized.
Can't insert the
device.
44
DXZ785USB
Cause
The device contains no MP3/
WMA/AAC files.
The files are not proper MP3/
WMA/AAC format.
Connectors are loose.
The MP3/WMA/AAC files are
improperly encoded.
The device is damaged.
Connectors are loose.
According to the state of
operation on the device, the
communication fault is
caused.
The device has been inserted
improperly.
The connector is broken.
Measure
Record MP3/WMA/AAC files properly to the device.
Use only properly encoded MP3/WMA/AAC files.
Disconnect the device and reconnect securely.
Use only properly encoded MP3/WMA/AAC files.
Disconnect the device and reconnect. If the device is
still not recognized, try replacing with a different
device.
Disconnect the device and reconnect.
Try reversing the connection direction of the device
(usually the brand name surface should be facing
left).
Replace with a new device.