Hi
I had this problem with my printer saying it was offline even though I keep it plugged in permanently. I found that to change the status to online, I had to press either the black or colour photocopy button to wake it up so that my documents would print.
It is annoying considering the whole point of being wireless was that you didn't need to go near the printer to print.
My only problem now is that with Windows 8.1 my documents print half a page and then stop printing, with my laptop telling me that there was an error but no explanation to it.
Any ideas how I can overcome this? I installed straight on to Windows 8.1 as I upgraded my windows 8 before I bought the printer!
Hope this helps,
Shannon