I just replaced the little white plastic feeder piece (the little hook part broke off of mine) and when I went to turn it on to test it it showed "Print error EC" message on the front and said to turn the printer off and on again. I turned off and on multiple times but it keeps showing the error code. It doesn't make the normal whirring noises it usually does at startup. What did I do wrong? And how do I fix it? I was so proud of myself for potentially fixing this problem and now I'm sad again... :(