MAN Roland 202 TOB stops suddenly while printing

Hello, I have this problem and cant see what it could be . The machine just stops while printing, I have to turn off and on to continue printing.

Anybody has had something similar.. ?

 

try to reseat computer boards in cabinet may be loose also check for loose wires in sheet overun detector in deivery.

 

Thanks for the reply spikeboy, turned out to be oil related, we cleaned the oil filter and everything working again.