How to mend Samsung Er 150

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

I need to reset my Samsung Cash Register?

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

Samsung ER 4915 not working?

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

Samsung er290?

does not print full amount on till entry?

cash registers ER-4615?

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

My Samsung ER 650 screen is black?

change tax for er4940 samsung?

Memory All Clear a Samsung ER-4615?

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

closed message? samsung er-4615?

Samsung er4615 closed?

how can i fix my Samsung ER290 cash register?

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

fixing key issues on a samsung ER 5100?

How do I clear an error code pp?

How can i clear extra lines appearing on screen?

Battery?

samsung er290 cash register?

samsung 4615 cash reg ?

Samsung ER-5100?

samsung er150?

Cash Register?

How do I mend Samsung ER4615?

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

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

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