How to mend Samsung Cash Register Error

How can i clear extra lines appearing on screen?

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

how can i fix my Samsung ER290 cash register?

Samsung ER 4915 not working?

cash registers ER-4615?

Battery?

change tax for er4940 samsung?

How do I mend Samsung ER4615?

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

How do I clear an error code pp?

samsung er150?

Samsung er290?

samsung er290 cash register?

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

Samsung er4615 closed?

samsung 4615 cash reg ?

closed message? samsung er-4615?

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

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

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

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

I need to reset my Samsung Cash Register?

Memory All Clear a Samsung ER-4615?

Cash Register?

does not print full amount on till entry?

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

Samsung ER-5100?

fixing key issues on a samsung ER 5100?

My Samsung ER 650 screen is black?

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