» HP Calculator Tutorial » hp 12c (platinum) - Performing Complete Self Test 

To perform a complete test of the hp 12c electronic circuity:

  • Turn off the calc.
  • Press and hold [x] (multiply) button and at the same time press the [ON] button.
  • Release the [ON] button.
  • And then release the [x] button.
  • You should see the "half Running" message flashing on the display
  • After about 10 secs, it should display -8,8,8,8,8,8,8,8
    88888888
  • Off and On the calc, it should display 0.00

If you see "Error9" on the display, then the self-test was unsuccessful. You may want to go on to the following section, to perform a system reset.

If you like do run this test infinitely.......

  • Press and hold [+] (multiply) button and at the same time press the [ON] button.
  • Release the [ON] button.
  • And then release the [+] button.

To stop the test, press any key and waif for a couple of seconds, it should display -8,8,8,8,8,8,8,8.

Happy Testing.

Updated On: 13.09.15


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