> Hi, I've just bought a new A-109 which doesn't produce any sound out
> of the left channel of the panning unit. There doesn't look like
> there's any break in the connection to the socket itself, though there
> is a jumper (J9) that isn't connected. Should it be If so I'll have a
> hunt round for a jumper; presumably if it shouldn't then the unit is
> defective and will need to be returned

I'd recommend to return the module for replacement or repair if it's bought
new.

One of the panning output sockets (PAN OUT L) should be wired to JP10/JP11
or JP9 (alternatively). You may take a look if this applies to you module.

Best wishes
Dieter Doepfer