There is probably a self test similar to the PSR3000.
Press C#2 F2 and G#2 all at once while pressing the power on button.
Press Tempo + or - to go to test.
Test 41 is the USB check.
Press start/stop to execute the test.
Check the manual.
Regards,
Jerry
[This message has been edited by Jerryghr (edited 10-11-2007).]