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how can i fix my sam4ser420m?

My cash register has just stopped scanning.
The scanner itself, seems to be working, but it's not
registering through to the till.
Phil, August 2011
Sounds like a broken cable. Only settings would stop it working and you haven't changed any.
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If anyone needs more information, the sam4s ER-420m manual is here:

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

Registerman, August 2011