Casio Tk-3200 All In One Cash Register "error 004" Questions

...cash register Error 004 What is Error 004 This error occurs when you turn the key when you have not completed a sale or x/z reading. Turn key to last know position hit Subtotal or Cash to

pcr-t470 error code 004 e004 change the comms port

How to clear error 004 on Casio SE S-300 Press clerk button