Indication for CD Player
•The disc is dirty or upside down.
-Press the 
button and eject the CD.
If not ejecting, consult your Alpine dealer.
•The disc has scratches.
-Press the 
button and eject the CD.
If not ejecting, consult your Alpine dealer.
•Mechanism error.
-Consult your Alpine dealer.
•A sampling rate/bit rate not supported by the unit is used.
-Use a sampling rate/bit rate that is supported by the unit.
Indication for USB memory
•No song (file) is stored in the USB memory.
-Connect the USB memory device after storing songs (files).
•A USB device that is not supported by the unit is connected.
-Connect a USB device that is supported by the unit.
•Abnormal current is run to the USB connector device (an error message may be displayed if the USB device that is not compatible with the unit is connected).
USB memory is a malfunction or it is shorted.
-Disconnect the USB memory device and turn off the power and turn on Connect another USB memory.
•Communication error.
-Turn the ignition key off, and then set to ON again.
•A sampling rate/bit rate not supported by the unit is used.
-Use a sampling rate/bit rate that is supported by the unit.