Thanks Shekar,
the boards under the crt are ok:
BOard1: FX562 - no led and no jumper is set
Board2: FX84 no lights on
Board3= FX32 one Led is on
Board4= FX52 led is blinking
When I put the "I" on the crt to make the machine on, the F keys are blinking up shortly, but then I cannot push them.
I just saw that the leds from the F-Keys are a little bit on, I can see a dimly light. I guesss thats not usual.
When I pull out the FX01 card from the rack the lights are off.
So could it be that one? Or could it be just the missing paramters?