Fruit Machine Chat

dosh and pecks £25 jp
ive just bought this machine and when i try and use it in the cash play mode i get an alarm and the codes of

alarm 17-83
pnd opt blocked
tamper
does any kind soul know what it means please.
thanks Nick

Disconnect then reconnect the hopper

i fixed the hopper system but now coin mech doesnt recognise any other coin except £1 and then it thinks it's a 10p