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Mend Sharp ER-290 Er290 Cash Register

How can we fix our ER-290 cash register?

As soon as the till is switched on it makes a loud, high pitched screaming noise that would normally stop once the clear button is pressed - but nothing will stop it apart from switching off the power supply!

Trudi
January 2011
SharpSharp ER-290Office Appliances, Cash RegistersEr290 Cash Register
Hi. You have probably turned the key to the wrong mode. Try turning the key to each position until it stops. If it stops in a different mode, you must finish what you were last doing in that mode.

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If anyone needs a samsung / Sam4s ER-290 manual,

http://the-checkout-tech.com/manuals/cashregisters/Samsung1.php

Registerman
January 2011

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Sharp ER-290 Repair: Screaming Noise Fix