Soft Reset
Unplug unit and leave unplugged for 10 min. Then, while replugging the power cord, HOLD THE POWER BUTTON ON FRONT OF UNIT until you see "P-On" in the front-panel display.
Hard Reset
Press SKIP 123 buttons on remote within 3 sec. At FW Versions screen, press OK button on remote.
Hard Reset + Format
Press SKIP 079 buttons on remote within 3 sec. After Self-Check screen fills in (2-3 sec), press OK button on remote.