how can i fix samsung ER5100 ?

Hi my Samsung till ER5 100 when trying to close comes up with cal what does this mean and how can it be fixed please

rachel
July 2018

I have fault o till. ER5100. Can use the numbers but not the individual keys such as "Guinness" etc

Seamus
March 2017

'CLOSED' on the display means no one is logged on to make sales on the register. You need to use your clerk button to log on. Some versions have clerk letters, so if you have buttons just marked 'A' or 'B' or 'C' etc then they are one touch logons, so just press one to sign in. If you have a button marked CLERK or CLERK# or CLK# then you sign in by PIN number, so try the default: press 1 then CLERK

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If anyone is looking for a Samsung ER-5100 manual, c-tech collective have it here:

http://the-checkout-tech.com/manuals/cashregisters/samsung1.php

Registerman
September 2010