Control board MA-774 is a drop-in for MA-647

On System 80B games the control board MA-774 directly replaces the older MA-647 and already has the spot for the MA-689 piggyback board that carries the game PROM.

Systems

• Gottlieb System 80B

Related tips

• Intermittent bookkeeping RAM (Z5) errors: reset cable MA-796

Source: Premier Technology Parts Catalog (System 80, 80A and 80B), Gottlieb / Premier