Update: I had a cash game last night in the barn. The shuffler had its first hiccup. The red light comes on. The message says Push red to clear cards. There are no cards to clear . When I hit the red button the door opens and stays open. I messaged minedelta and read through the guide. He said it probably has something to do with the #4 wire. I used the link Buge provided to order the cable and supplies to replace.
Tonight I removed the cover to become more familiar with the unit. I pressed each cable connection down to make sure everything was connected solid. A couple of the connections felt loose or slightly crooked which happened to include the #4 connection. I plugged in the unit to see what would happen and now it is working as it should. I am transporting the shuffler in my vehicle to the game so maybe moving it around has caused the connections to shift.
The only other hiccup that happens is every once in a while a card with flip up sideways and the shuffler will stop with the red light coming on. I occasionally hear a loud clatter during the shuffle like a card may have tried to flip. Any thoughts on that? Does something need to be adjusted?