Decimals on the display indicate there is an error in the game. Pressing the accounting button will display the error on the games display. See below for the error codes for the games and their meanings.
Error Number = Error Description
3 = L/R Motor ; No Left and Right movement.
4 = F/B Motor ; No Forward and backwards movement.
5 = Up ; Claw up switch not seen.
6 = Down ; Claw down switch not seen.
7 = Prize Sensor Failure ; Prize sensor malfunction.
8 = SD Card ; Unable to read SDCARD.