Having had to dump two tills (Sharp and a Casio) with permanent "paper jam" error codes after trying to service them myself - futile exercise - I discovered that the memory-back up may have been the problem. With the most recent paper jam problem - no paper jam, just the error code all the time - I removed the data back-up batteries and replaced them. Problem gone! It appears that the memory was retaining the error message - or that's my guess. Nuts! I bet the previous two tills were ok.

Hi.
On the Sharps, you must press CLEAR after you remove the paper jam. I've never heard of it going away with a reset if there was still an issue with the printer. Casios clear their paper error message as sson as you clear the jam and close the paper holder again. I have had the TE-4000 series give the problem of not clearing the message though. Happened the other day. Did a half reset and it worked again. Apart from that, the message usually indicates a printer fault that might return.

Mark