How to mend Error Samsung Cash Register

cash registers ER-4615?

My Samsung ER 650 screen is black?

Samsung er4615 closed?

How can i clear extra lines appearing on screen?

Battery?

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

samsung er150?

does not print full amount on till entry?

Samsung ER 4915 not working?

I need to reset my Samsung Cash Register?

fixing key issues on a samsung ER 5100?

Memory All Clear a Samsung ER-4615?

how can i fix my Samsung ER290 cash register?

change tax for er4940 samsung?

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

How do I clear an error code pp?

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

samsung er290 cash register?

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

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

Samsung ER-5100?

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

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

Samsung er290?

Cash Register?

closed message? samsung er-4615?

How do I mend Samsung ER4615?

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

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

samsung 4615 cash reg ?