Data Protector Express single server Edition Error Code 3

[Muwoka]

Hi

I have a problem with a DAT72 StorageWorks SCSI giving me an error code 3 : unknown command and in the meantime the clean led blinks.
The first time this problem occured was after the drive detected a writing problem on a tape.
Everytime I insert the cleaning cartidge the led stops blinking but I am still unable to format any tape without having the error.

Unfortunately I was unable to find any document explaining the error codes

Could someone explain me this error or give me a link to the error codes ?

regards

Mwk