Turn the calculator on with the ON button. If anyone reading this has an fx-82EX or fx-350EX, please see if these instructions work for those models and post the results with the title "Casio CLASSWIZ fx-82EX Diagnostics" or "Casio CLASSWIZ fx-350EX Diagnostics" so that a google search will find it.īefore you start testing, clear the calculator memory by pressing SHIFT, then 9 (it has RESET printed above it), 3 (initialize all), = (Yes), AC (exit). Both models have have the same display, electronics and software, and the diagnostics are the same for both. The fx-570EX is 25% thicker and 10% heavier because of the different batteries. The Casio CLASSWIZ fx-991EX and the Casio CLASSWIZ fx-570EX are almost identical, except the fx-991EX is powered by an LR44 battery and a solar cell, while the fx-570EX is powered by a AAA battery. Released under the Creative Commons CC0 "No Rights Reserved" license.
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