RX400H radio volume problems

[MickyV]

Hi All, Im not it Australia or NZ Im in the UK, but Im trying to find out why, after a battery change, my radio will not respond to the volume control, the display shows the radio stations and all controls work apart from the volume, also the CD load is not working, I press it for a few seconds as stated in the manual and no orange or green lights come on and the cd door does not open, I have checked all fuses and none are blown, does anyone have any Idea, its a Mark Levinson system.