That's the AX relay, Peach.

From memory, when the AX is pulled in, it is held closed by a tab on the end of the AX Reset. So the contacts on the AX will be CLOSED.

when the AX Reset coil is energized, it RELEASES the contacts that were pulled in by the AX.

MAYBE the problem is MECHANICAL - The AX is not being held in - as that is a physical action, not electrical. The AX should energize ONCE - then HOLD on the contacts in the stack CLOSED - and not OPEN until AX Reset energizes - "freeing" the closed AX stack.

Soooo..

With the relay in your hand - you should be able to force the action of the AX coil - the switches in its stack should stay CLOSED. If they are not - you have a physical problem with the mechanism. Then force the AX Reset, and the AX should spring back and OPEN it's stack

Do all of this with the machine OFF

I don't have a 4 player to reference - I'm only going off what I remember years ago - Maybe someone can confirm the action of the AX - Daniel ..