HP 35s Scientific Calculator Manuel d'utilisateur télécharger pdf (Page 291)

Support, Batteries, and Service A-5

3. Remove the batteries (see "Changing the Batteries") and lightly press a

coin against both battery contacts in the calculator. Replace the batteries

and turn on the calculator. It should display  .

4. If the calculator still does not respond to keystrokes, use a thin, pointed

object to press the RESET hole. Stored data usually remain intact.

Reset Hole

If these steps fail to restore calculator operation, it requires service.

 If the calculator responds to keystrokes but you suspect that it is

malfunctioning:

1. Do the self–test described in the next section. If the calculator fails the self

test, it requires service.

2. If the calculator passes the self–test, you may have made a mistake

operating the calculator. Reread portions of the manual and check

"Answers to Common Questions" (page A–1).

3. Contact the Calculator Support Department listed on page A–8.

The Self–Test

If the display can be turned on, but the calculator does not seem to be operating

properly, do the following diagnostic self–test.

1. Hold down the

 key, then press  at the same time.

2. Press any key eight times and watch the various patterns displayed. After

you've pressed the key eight times, the calculator displays the copyright

Press the keys in the following sequence:

1 2 ... 286 287 288 289 290 291 292 293 294 295 296 ... 381 382

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HP 35s Scientific Calculator Manuel d'utilisateur Page 291