Programming. My copier has lost it's programming. This happens about once a year. I could not

Question

My copier has lost it's programming. This happens about once a year. I could not reach my regular repairman this time. The last time the copier lost it's programming, he was able to talk me through the programming over the phone. I wrote down some of the instructions, but apparently to all of them. Can you describe how to get started. The "error code" showing is
C 01.

thank you

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