barcrest royal exchange alarm any idea

[royal exchange club]

Hey peeps any idea just brought a barcrest royal exchange club machine and been playin for a few days but this alarm comes up and no idea on where to star any ideas pls this is the alarm code ALARM 19-7F
thanks

[dazzer]

Has the machine got an MPU 5 fitted as it looks to me being A coin mech Error alarm also if the status on the mpu flashers 7 times red and then 15 green this would confirm this error this alarm would be caused by a coin input error