Panasonic CQ-5251JU Operating Instructions Manual page 30

Error Display Messages (continued)
USB
30
CQ-5251JU
A USB device is not connected or the connected device cannot be recognized.
a Use the type of USB memory that is suitable for this unit.
Your USB device has no playable file.
a Download playable file to your USB device.
A USB device the capacity of which exceeds the acceptable current was connected.
For some reason, an over-current was detected.
a
Use a USB device that has a consumption current of less than 500 mA.
a
Switch the source, and select the USB mode again.
a
Check that the USB connector section is not dirty, and that there is no foreign
material.
No operation by some cause.
a
Turn off the power and turn on the power again, or turn the key to the ACC OFF
position and turn the key to ACC ON position again. If this does not solve the
problem, unplug the power cord and plug it in again. In case the unit is still
out of order, consult your dealer.
The player for some reason cannot read the file you are trying to play. (File recorded
in an unsupported file system, compression scheme, data format, file name
extension, damaged data, etc.)
a
Confirm that the USB extension cable is firmly connected, and reconnect if
not. Select a file that the player can read. Check the type of data stored in the
USB device. Format the USB device if necessary.
A WMA file can be copyrighted.
a
The file protected by copyright is not playable.