Reciver trouble not working right

[curt69.cc]

I have a technics receiver number sa-EX 300 You can turn it on by the receiver But no other buttons work It works for my TV but I have no control over the volume or any other button And it is stuck on CD Any help would be greatly appreciated.

 

[americanaudiophile]

https/www.hifiengine.com/manual_library/technics/sa-ex300.shtml