In that link that Candace gave, you'll see that the cord has 2 different ends, it's very important that the right cord is gotten. When they went from 150, to 150E they used whatever 'Selectronic' is, which is what the 600 Series had new
You know, now that I think about it, maybe it's not the best machine for a beginner. I know it took me a lot of time to dig up all that info that if one did't knowcould end up in a machine that doesn't work.