Periodically the register will shutoff during a transaction. The amount is entered into the dept key and validated, then the machine shuts off. We turn the machine back on and the display is 0.00 and we cannot push any buttons to make it work. We unplug and replug the power cord and log back on and then we can operate the machine again; this has a 50% success rate. This has been happening for about a week sometimes several times a day. Any suggestions?

Lisa, March 2012

Most commonly I've had the printer motor cause this. Might have an intermittent motor.
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If anyone needs information for the TEC MA-1450, the manual is here:

http://the-checkout-tech.com/manuals/cashregisters/TEC2.php

Registerman, March 2012