Manual HP HP-12c (page 198 of 218) (English)

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198 Appendix F: Battery, Warranty, and Service Information

Note: Tests of the calculator’s electronics are also performed if the = key

or the z key is held down when ; is released.

These tests are

included in the calculator to be used in verifying that it. is operating

properly during manufacturing and service.

If you had suspected that the calculator was not working properly but the proper

display was obtained in step 2, it is likely that you made an error in operating the

calculator. We suggest you reread the section in this handbook applicable to your

calculation – including, if appropriate, appendix A. If you still experience diffi-

culty, write or telephone Hewlett-Packard at an address or phone number listed

under Service (page 200).

Warranty

HP 12C Platinum Financial Calculator; Warranty period: 12 months

1. HP warrants to you, the end-user customer, that HP hardware, accessories

and supplies will be free from defects in materials and workmanship after

the date of purchase, for the period specified above. If HP receives notice

of such defects during the warranty period, HP will, at its option, either

repair or replace products which prove to be defective. Replacement

products may be either new or like-new.

2. HP warrants to you that HP software will not fail to execute its

programming instructions after the date of purchase, for the period

specified above, due to defects in material and workmanship when

properly installed and used. If HP receives notice of such defects during

the warranty period, HP will replace software media which does not

execute its programming instructions due to such defects.

3. HP does not warrant that the operation of HP products will be

uninterrupted or error free. If HP is unable, within a reasonable time, to

repair or replace any product to a condition as warranted, you will be

The ;/= combination initiates a test that is similar to that described above, but continues

indefinitely. The test can be terminated by pressing any key, which will halt the test within 25

seconds. The ;/z combination initiates a test of the keyboard and the display. When the

; key is released, certain segments in the display will be lit. To run the test, the keys are

pressed in order from left to right along each row, from the top row to the bottom row. As

each key is pressed, different segments in the display are lit. If the calculator is operating

properly and all the keys are pressed in the proper order, the calculator will display 12 after

the last key is pressed. (The

\ key should be pressed both with the third-row keys and

with the fourth-row keys.) If the calculator is not working properly, or if a key is pressed out

of order, the calculator will display Error 9. Note that if this error display results from an

incorrect key being pressed, this does not indicate that your calculator requires service. This

test can be terminated by pressing any key out of order (which will, of course, result in the

Error 9 display). Both the Error 9 display and the 12 display can be cleared by pressing any

key.

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HP HP-12c Manual

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