Nejsi sám, těmito dotazy se to jen hemží.
Google: "Warming Up" PSC 950
Zkusil jsi reset tímto způsobem?
you can try to make a reset..
Unplug the power cord from the all-in-one.
Press and hold the button # and 6
While still holding the buttons down, plug the power cord back in. Release the buttons after the all-in-one begins to initialize.