How to mend Samsung Er-550

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

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

how can i fix my Samsung ER290 cash register?

How do I mend Samsung ER4615?

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

Memory All Clear a Samsung ER-4615?

Samsung ER-5100?

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

samsung er290 cash register?

Samsung ER 4915 not working?

cash registers ER-4615?

does not print full amount on till entry?

Cash Register?

samsung 4615 cash reg ?

Samsung er4615 closed?

fixing key issues on a samsung ER 5100?

I need to reset my Samsung Cash Register?

How do I clear an error code pp?

My Samsung ER 650 screen is black?

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

How can i clear extra lines appearing on screen?

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

samsung er150?

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

Samsung er290?

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

closed message? samsung er-4615?

Battery?

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

change tax for er4940 samsung?