Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I presume you mean this model:
That is a Simplex model 1403-9110, and error codes for it are not listed in any source I can find.
Since the punch / print action does not trigger on inserting a card, I suspect it's as simple as either:
A. The switch (whether a 'solid' or mechanical switch, or an optical (beam interrupted) switch) is not triggering, or is 'broken'.
B. the switch triggers, but the control circuitry and/or the relay triggered by that switch, is not working. So that relay does not activate the punch/print action.
You might have to locate a Simplex tech in your region... if you're not in a hurry, you could advertise on craigslist.com for one, to advise you in more detail.
(If this answers your question and completes the case as far as you are concerned, please rate my answer. Thanks.)