How to mend Reset Samsung Closed

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

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

how can i fix my Samsung ER290 cash register?

Samsung ER 4915 not working?

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

Samsung er290?

does not print full amount on till entry?

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

Battery?

fixing key issues on a samsung ER 5100?

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

I need to reset my Samsung Cash Register?

How do I mend Samsung ER4615?

Memory All Clear a Samsung ER-4615?

samsung 4615 cash reg ?

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

change tax for er4940 samsung?

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

My Samsung ER 650 screen is black?

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

samsung er150?

How do I clear an error code pp?

Samsung ER-5100?

closed message? samsung er-4615?

How can i clear extra lines appearing on screen?

Samsung er4615 closed?

Cash Register?

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

samsung er290 cash register?

cash registers ER-4615?