Resetting a sony deck?

My friend has an 02 civic, and just bought a used cdx-m3di. I need to reset the damn deck... anyone know how?

Everytime he touches the volume up once it blast the sound up like hell (25 notches).

You may have better luck posting your question here: http://www.automotiveforums.com/vbulletin/forumdisplay.php?f=1040