Oh that's European. No wonder I couldn't find it on Sony site. Found this on EURAS. Procedure: 1. From standby press OSD/5/VOL+/TV which puts set into SERVICE mode and TT_ _ will appear top right of screen. 2. The set is now waiting for instructions. Commonly used instructions: a) TT38 sets TV as a 28". b) TT24 sets TV as PAL I. c) TT79 is for widescreen. d) MENU gives you various sub-menu choices such as geometry. e) TT00 exits and stores.