Hello, my Epson P9000 wakes up from sleep after about half an hour for no reason, this happens only if ethernet cable is connected. I can't understand if there is something on my network causing the problem, I tried turning off as many devices as possible with no results (I'm in a small office and I can't turn off routers, and other devices for obvious reasons). Testing also takes an infinity since you need to wait about 30 mins every time to see the results. This printer replaced an Epson 9890 that never had this issue. Any idea?