Question about HP 48gx Calculator
.The selft tests will show you what is wrong, and if the calculator requires repairs.
You can reset the calculator:
Turn the back of the calculator towards you. Extract the top left rubber pad on the back of the calculator and use a paper clip to press the Reset button. If that does not restore the calculator to health, you should perform the dagnostic tests.
The following procedure valid for the 48G should work for the HP48GX.
Make the calculator perform a
The self test will continue repeatedly until you perform a
If you do not see IROM OK and IRAM OK, the calculator requires service.
If the above procedure is successful, you may want
to test the keyboard.
If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.
Hope it helps.
Posted on Nov 07, 2009
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Posted on Jan 02, 2017
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