How to mend Switch Samsung Side

Samsung ER-5100?

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

Memory All Clear a Samsung ER-4615?

How can i clear extra lines appearing on screen?

closed message? samsung er-4615?

samsung 4615 cash reg ?

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

Samsung er4615 closed?

how can i fix my Samsung ER290 cash register?

samsung er150?

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?

Battery?

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

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

cash registers ER-4615?

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

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

samsung er290 cash register?

How do I mend Samsung ER4615?

fixing key issues on a samsung ER 5100?

Samsung ER 4915 not working?

My Samsung ER 650 screen is black?

does not print full amount on till entry?

I need to reset my Samsung Cash Register?

Cash Register?

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

change tax for er4940 samsung?

How do I clear an error code pp?

Samsung er290?