Phillips 37in flatscreen TV with integrated digital tuner?

I have a flat philips tv with integrated freeview tuner which I have connected to an LiteOn DVD/HD recorder. Please could anyone help me with advice on recording from the digial tuner? The guide is not that helpful - just says make sure recorder is contacted by 'Ext 2' (which it is by Scart). However I still can't seemm able to tune the recorder to the digital output