Set up my new Epson 4900 last night and printed some test prints. Worked great. Checked on it this morning and found it sitting there looking like it is off - no lights, nothing on the display panel. The manual mentions a sleep mode. Anyone know if it looks off when it is asleep, or whether it has actually turned itself off. How do you wake it up when it is asleep? It is on ethernet and is offline to the computer, meaning that there is no waking it from the computer.