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Tec Ma1400 service key?

I need to find my S key, and the printer does turn clearly 1 second on R when I switch register on. After that it begins buzzing. What does that mean? Does not Clear in any mode.
Denice, June 2012
If the printer turns, that is a good sign. Next step is find the service key so you can turn to the blank position on the mode lock and we'll try a half reset.

Registerman, June 2012
link Click here to see other fixes for TEC.