Hp 48G Instrukcja Użytkownika Pobierz pdf (Strona 110)

If you suspect that your calculator is malfunctioning:

1. Run the self-test;

a. Turn on the calculator.

b. Press and hold fON ).

c. Press and release the “E” inenukey.

d. Release (ON). The diagnostic self-test tests the internal ROM

and RAM, and generates various patterns in the display. The

test repeats continuously until you perform a system halt.

2. Halt the self-test (system halt):

a. Press and hold (ON ).

b. Press and release the “C” key (the kejf with C next to it).

c. Release (ON). The empt}'' stack display should appear.

If the self-test indicates an internal ROM or RAM failure (if

ROM OK

and I RAM OK are not displayed), the calculator requires service.

If the calculator passes the self-test, you may have made a mistake

operating the calculator. Reread appropriate sections of the

documentation and “Answers to Common Questions” in Appendix A

of the HP 48G Senes User’s Guide.

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Hp 48G Instrukcja Użytkownika Strona 110