Fruit Machine Chat

I'm having intermittent problems with Rainbow Riches - Dublin Yer Money. Machine will work ok for a while and then the alarm will go off and the following errors are shown on the screen:

CCTALK C 2 F2
SERIAL COIN MECH
ALARM 10 - 70

What do these error messages point to and is there an easy remedy?

it's a tampler or coin jam alarm on the coinmech.

if nothing is jammed in it, i would replace it.