Analogue-sequencer

Hello,

I just finished my P3 and I can't get it to boot. First time I 
powered it up it did a small flash show and ended up with all lights 
on the step row on. Then I remembered I had read somewhere that a 
conbination of keys had to be held down the first time I power it up. 
I checked the manual and tried to hold down F1 and step 7 but nothing 
happened (the same sequence was played again and stopped at all 
lights on). I tried again and now something happened... the lightshow 
didn't start and just two leds were lit, the "tie" and "x".

I haven't seen any text in the display yet.

ANybody who can help me?

THanks

Robert