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My Casio ML-90 has been unused for some time. I

My Casio ML-90 has been unused for some time. I got new batteries, and it works, set the time OK, but cannot set the date (says "E" for Error, I assume). I tried telling it was 1999, and it accepted that, but when the time went from 11:59 to the next minute, the date went to "E". Any way to fix it?

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Posted on Jan 02, 2017

vladp995
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SOURCE: how to set date and time on a casio qa-300 calculator

Are you sure that there is such calculator, look here casio calculators manuals:
http://www.theusermanualsite.com/ex/thread/view/idThread/1647547
Rate me if it helped

Posted on Jul 08, 2009

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