WARNING: Invoking the test described below may result in the clearing of data memory, program memory, and mode settings.
The FN1000 has two separate test functions, an internal self-test, and a keyboard/display test.
To perform the internal self-test, with the calculator off, press and hold the
multiply key (or the plus key 1), press and release the ON/OFF key, then
release the multiply key. The calculator will display
To perform the keyboard/display test, with the calculator off, press and hold the divide key, press and release the ON/OFF key, then release the divide key. Then, with the exception of the ON/OFF key, press each key in order from left to right on each row, from the top row to the bottom row. Different combinations of segments and indicators in the display will be turned on as each test key is pressed. When the keyboard test has progressed to the point where the roll-down key is pressed, all segments and indicators will be turned on. When the last key, ENTER, is pressed, "End SE9" is displayed. Press any key to exit. If any key is pressed out of order, or is pressed twice, the error indicator and "9" (error 9) will be displayed.
1 While the FN1000 is curiously similar to the Hewlett-Packard HP-12C, there are differences. Unlike the HP-12C, pressing the plus and ON/OFF keys as discussed above does not initiate a continuous internal self-test. Although, pressing and holding the minus key, then pressing the ON/OFF key, and then releasing the minus key does clear memory and reset the calculator default modes, and display "Pr Error", just like the HP-12C.
Last updated September 6, 2003