Anyone know what this is, I turn it on get like 7777 on the screen, then next screen is Ser (odiously service), then the model screen pops up 3000, Then it works?
I was given this from a buddy who didn't need it. I was wondering what is this 7777 stuff, and from what i read this has auto calibration (to eliminate yearly service) any way to get rid of this some secret to reset this BS?
Sadelco displaymax jr 3000
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