Bang @ Olufsen Beogram service help needed

Hi all, I am repairing a B&O Beogram player. I have repaired a good number of players but this one is so far from the common cdp building methods that I have problems with it. The problem of the player is that it spins up the disc (very fast) but doesn't read. Play simply doesn't start and the display reads 0000. Seeing that the cd spins I guess the FOK signal is present. Can anybody tell me how I can go to some kind of a service mode with the player? Or, does anybody have the service manual? Any kind of help is appreciated. I have read somewhere that this player can very easily have connection problems at its lower board, and the clock IC gets defect easily. I'll check these, though I guess it wouldn't do anything without the clock signal. I cannot find any test points, that also can be a problem later. I don't know where the RF, TE and FE can be monitored (though I'm not there yet anyway). Thanks, m127