How to mend Lcd Dark Samsung

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

does not print full amount on till entry?

How do I clear an error code pp?

My Samsung ER 650 screen is black?

Samsung er4615 closed?

Cash Register?

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

cash registers ER-4615?

How do I mend Samsung ER4615?

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

Memory All Clear a Samsung ER-4615?

Samsung er290?

how can i fix my Samsung ER290 cash register?

I need to reset my Samsung Cash Register?

change tax for er4940 samsung?

samsung er290 cash register?

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

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

Samsung ER 4915 not working?

fixing key issues on a samsung ER 5100?

How can i clear extra lines appearing on screen?

Samsung ER-5100?

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

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

samsung 4615 cash reg ?

closed message? samsung er-4615?

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

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

samsung er150?

Battery?