Hard reset xperia active (satsuma)

I found my old phone and it was password protected but I forgot what it was. It`s an xperia active (satsuma). How do I hard reset my phone? I have ... - I found my old phone and it was password protected but I forgot what it was. It s an xperia active (satsuma). How do I hard reset my phone? I have checked everywhere online and I found nothing. I have this phone: http://www.boeboer.com/wp-content/uploads/2011/10/SonyEricssonXperiaActiveManualUserGuideST17iExtendedSpecsOverview.jpg