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how to remove error message 1E-03 on a Uniwell NX-5400?

how to remove error message 1E-03 on a Uniwell NX-5400
Saverio, March 2013
Error 3 is always a sign on problem on Uniwells. Enter your PIN number then press the clerk button. If you need to change the PIN number, one of our users has the programming manual here:

http://the-checkout-tech.com/manuals/cashregisters/Uniwell_NX-5400_type_01_programming_manual.html

Registerman, April 2013
link Click here to see other fixes for Uniwell NX-5400.