How to mend Samsung Cash Register Er4940

I need to reset my Samsung Cash Register?

closed message? samsung er-4615?

cash registers ER-4615?

samsung er150?

how can i fix my Samsung ER290 cash register?

How do I get the register key to turn to "P" for updating the sales tax?

On screen is 'PCo' and nothing is functioning, how to correct?

samsung 4615 cash reg ?

How do I mend Samsung ER4615?

Operator's Manual - Samsung ER-290 Electronic Cash Register?

My Samsung ER 650 screen is black?

Samsung er4615 closed?

How can i clear extra lines appearing on screen?

Paper in my Samsung ER4915 jammed. Now it doesn't work at all?

Cash Register?

Why does the error code E1 show on screen and high pitched?

does not print full amount on till entry?

I can't open the drawer. It has a squeal like a key is stuck?

can non-upc codes function be disabled for samsung sps 520 register?

Samsung ER 4915 not working?

samsung er290 cash register?

clear E3 error code on samsung er-290 cash register?

Memory All Clear a Samsung ER-4615?

change tax for er4940 samsung?

How do I clear an error code pp?

Samsung er290?

my samsung er-150 cash register makes a high pitched alarm sound on switch ?

Battery?

Samsung ER-5100?

fixing key issues on a samsung ER 5100?