Hello everyone- This is a classic tale of if it isn't broke don't mess with it...
My S6000 (Black and White) was working perfectly after a battery replacement and RAM clear with chips I bought on eBay. The ticket printer would print tickets but the validator would not read them or credit the machine. I bought a TITO module but it wouldn't work because I was missing set-up settings that the seller said needs to be there: missing were 29, 19hi and lo and 17. So I bought a set of mains from eBay that the seller says many people use with tito, he didn't know if the ROMS included the missing settings but I figured I'd give it a shot. I installed the mains after a RAM clear (nothing else was done) and the machine came up with this 91NC after setting date/time. I figured no biggie I'll just do another RAM clear and re-install the old mains but now the code comes up as well and the machine is locked. I'm not sure how to clear this code, I've looked at as many prior posts as I can find but nothing so far has worked. Any ideas? Any help would be appreciated...