Here you go - straight from page 49 of the 1070's manual.
To perform a system reset:- Turn the rear-panel MAIN POWER switch on. The Standby /On indicator on the front panel will glow amber.
- Turn on the Model 1070 by pressing any of the input source buttons.
- Press the Menu and Mute buttons on the front panel at the same time.
“PRESS (1) TO LOAD DEFAULT” appears in the front-panel display. - Release the the Menu and Mute buttons.
- Within five seconds, press the 1 button on the remote control.
“OUTLAW AUDIO/MODEL 1070” appears briefly to indicate that the unit has been reset. The unit will then return to normal operation.
Hope that helps!