FAQ 2259
The machine behaves sluggishly.

If the MFD is powered up but the screen is sluggish or responds unpredictably, the machine may benefit from a software reset.  Press the energy-saver button twice in quick succession , and the screen will show two options, one of which is ‘Quick restart’.  Select this and the machine will power-cycle itself.  Note:  Xeroxes do take quite a while to restart, so be patient!