I found a thread earlier and tried to hold the reset switch while turning on the machine, but same error code A occurs.

Initially It worked at first until I got a jackpot, so I looked in the back and found some thin cardboard purposely jammed in the jackpot release chute, and after that I started to play again.

At some point, probably during a pocket win, the LCD started showing Please call Attendent warning and the stop light repeatedly began blinking.

Now anytime I turn on the machine it won't that Error code A blinks in the back and the LCD warning message occurs.

Anyone familiar with this rig!