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how can i fix my cash register sams er-420m?

new cash register used key went in to enginer mode by mistake cant do anthing on it now what ever i turn to i get error mode
gareth, February 2009
Hi.
You have started an operation in one mode, then tried to turn to another mode without finishing.
Try turning the key to each mode, press clear, then cash in each mode.
If this doesn't work, let me know (replies don't work, so ask a new question).

Mark, February 2009