How can I unlock my philips video recorder vr600?

I set my video a couple of days ago on timer to record something. I have since gone to play it and it is set to Satellite (SATP) and keeps displaying a key symbol. It wont play or record/eject I cant get it to do anything. It is a few years old and the model is a VR600 Philips. I think it needs an unlock code but i cant find the manual to tell me how to unlock it. Can anyone help?