how can i fix my olivetti ecr5200 cash register?

I have an olivetti ecr5200 cash register which a child slammed his hands over the keys several times and now it won t work at all. I ve tried turning it on and off and taking the batteries out and leaving it off for 15 mins. Any ideas?

Lindsay
January 2012

Olivetti Olivetti ECR5200 Office Appliances, Cash Registers

This seems to be a rare model so i don't have notes on it. Make sure none of the keys are stuck down or broken. Otherwise, the only manual I have found for the ecr5200 is here:

http://the-checkout-tech.com/manuals/cashregisters/Olivetti_ECR-5200_Instruction_Programming_manual.html

Registerman
January 2012