How to mend Samsung 4s 5200m

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

How do I clear an error code pp?

closed message? samsung er-4615?

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

My Samsung ER 650 screen is black?

does not print full amount on till entry?

fixing key issues on a samsung ER 5100?

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

change tax for er4940 samsung?

samsung er290 cash register?

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

Samsung ER-5100?

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

How do I mend Samsung ER4615?

Memory All Clear a Samsung ER-4615?

Samsung ER 4915 not working?

samsung 4615 cash reg ?

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

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

Samsung er290?

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

Samsung er4615 closed?

how can i fix my Samsung ER290 cash register?

I need to reset my Samsung Cash Register?

cash registers ER-4615?

How can i clear extra lines appearing on screen?

Battery?

Cash Register?

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

samsung er150?