having a machine problem...

Hi
I use Tajima 1 head 15 needles embroidery machine. Since 1 week I hear some weird annoying noise when I trim or embroidering something.It sounds like a bird noise.Sounds like two metal touches each others. Machine works very well so far. First I thought It needs oil but after I kept oiling the machine regularly, still same noise I keep hearing that. I think employee didn't put some oil a few days. Do you thing is that a big deal? Should I call somebody to repair my machine? I will really appreciate for your answers. Thank you very much.

Location: 
United States

If you have a metal to metal sound you should get it checked out if you can't trouble shoot it on your own. If you can't pinpoint where it is happening it really is better for a tech. to take a look at it before you have any permanent damage done.