Both channels playing on channel 1

Hi, I'm sure this has been covered but cannot find it
Gear: DVS MKII - U46
Technics 1210
HP dv6 AMD quad core
Allen & Heath Xone 2
Numark CDX
Everything sets up fine, when using timecode vinly both decks are recongnised, load tracks on both decks but when channel 2 (deck 2) is played it comes out of channel 1 and so does deck 1. Same happens when I use the timecode CD.
I have checked the leads are correct in the U46 (I have been DJ for nearly 30 years) and reloaded the driver software. Checked the mixer and thats working fine. Can anyone help?
Gear: DVS MKII - U46
Technics 1210
HP dv6 AMD quad core
Allen & Heath Xone 2
Numark CDX
Everything sets up fine, when using timecode vinly both decks are recongnised, load tracks on both decks but when channel 2 (deck 2) is played it comes out of channel 1 and so does deck 1. Same happens when I use the timecode CD.
I have checked the leads are correct in the U46 (I have been DJ for nearly 30 years) and reloaded the driver software. Checked the mixer and thats working fine. Can anyone help?