DJ:error: L-EC or CIRC; Plz Help me

Hi,
As I try to copy self-booting already on cd, DJ give me the following error, all 30 second (disc time):

17793 (cdb: bee 0000334...., Status: 04002,
Sense: 031106) L-EC or CIRC unrecovered read error

Follow a warning message
17596 Suppling 2 dummy blocs at address 34:03:34 MSF

If anyone know how I can change this,... Because know the backup are loading but stop working in the main menu.
Thanks

My recorder is yamaha 4X4X16XS and I worker under Me