Starting the machine , S relais activates and resetting of all four score reel completed.
Reset bank resets , but as soon as power is on the machine the relais ZB and QB are activated and stays activated also after resetting of the bank.
SB relais pulling
Score motor stops
Bal not given and the only activity on playfield are the both eject holes on top.
No flippers , no bumpers and all other swiitches on playfield not working.
Playfield,lights and backbox lights are working.
Need some help

It completes six steps of this procedure, so control bank resets.

Checked step 8 and the unit goes to his zero position,
No activity on playfield or score reels

Yes i manual placed the unit in any position, and as soon i start the machine it follows the given steps of the startup sequense and it goes to,his zero position.

Further noticed that during stratup the hold rel R just pulling a second and then stays in relaxed position??

Howard,
Found the problem while,jumpering in the circuit you showed. Problem was in the R relais it was timing of the switches and adjusted and cleaned them. That solved all the other problems as well.
As said problem solved but found in the cabinet very close to,this R relais a small resistor , see attached photo,
Any sugestion where that comes from??

3C64E486-C05B-4A2D-A14E-774CEBDD769C (resized).jpeg

No nothing in the schematic, must be left over from former owner.
Anyway thanks for your help in getting it running again.
Albert