When the game encounters an error the top row of clowns will turn red. To determine the error on the game press the "UP" button located in the front center door when the game is in attract mode. See the listing below from the game manual showing the error codes and possible solutions.
Error 1 Ticket Error DISPLAY SHOWS TIC.
Solution: Refill Tickets! See section “When “Tic” appears in the display”
Error 2 CF Error ; Compact flash error
Solution: Reseat Flash card or replace.
Error 3 Ball Gate Closed Error; Game didn’t see the sensor for closed.
Solution: Check for proper ball gate operation. See section “Ball Gate Assembly”
Error 4 Ball Gate Open Error; Game didn’t see the sensor for open.
Solution: Check for proper ball gate operation. See section “Ball Gate Assembly”
Error 5 Top Motor/Switch Error; Top Row switch not seen.
Solution: Check Clown Reset Bracket sensor.
Error 6 Bottom Motor/Switch Error; Bottom Row switch not seen.
Solution: Check Clown Reset Bracket sensor.