Question about Casio CFX 9850GA Plus Calculator
Adjust contrast [MENU] Arrow till [CONT] icon is highlighted. Arrow down to highlight CONTRAST. Press + ou - to adjust.
You can also adjust colors, if you have the color version.
It this does not work, chamge batteries (main batteries).
Hope it helps.
Posted on Sep 22, 2009
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Posted on Jan 02, 2017
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