F9 printer control

[Mick M.]

Hi;
 I did something to kill my printer in F9.
Now I cannot find out how to clear the queue, or look at jobs.

I restarted cups. and even a reboot did not bring it back.
The printer itself is fine but F9 now will not talk to it.
It is a HP C5180 all-in-one USB.

Thanks
  Mick M.