ipod classic error 1434 no restore

hi i dropped my ipod and it stopped working, then it came up connect to itunes to restore, it wouldnt let me restore as it comes up (the ipod "ipod" could not be restored. An unknown error occurred (1434).) i then tried to do a disk diagnostic of my ipod classic and it came up with ERROR! Diag Halt. what does it mean? and can i fix it?