Question about HP 15C Scientific Calculator

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Have just bought a second HP 15 C calculator (the first one had a faulty 7 button) and when the ON button is pressed PR ERROR is displayed. Pressing buttons at random removes the error after which it works normally. It can be turned on or off at short intervals with no problem. However, if left off for a few minutes, PE ERROR returns when next turned on. I have performed the self-check procedures mentioned in the manual and box erratum sheet but these have not solved the problem. It's just a nuisance to have to trick the device into a working condition. Would appreciate any ideas - don't think I am doing anything wrong. Just a little disappointed in HP right now. Thanks.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

oldnovii
  • 667 Answers

SOURCE: HP 32 won't work

Hey Dave- take a look at the following link. I like to have the user actually look at the user guide instead of describing it. If this solves your problem PLEASE rate this as fixed. If this isn't exactly right or you need more help just add a comment and I'll be glad to help you further. Thanks.
http://h10032.www1.hp.com/ctg/Manual/bpia5305.pdf

Jeff

Posted on Apr 30, 2008

  • 7993 Answers

SOURCE: Too few arguments appeat when turn on the HP 48gx calculator

Hello,

This calculator uses RPN (reverse polish notation) not algebraic notation.
If say you want to calculate 12+13, you proceed as follows
12 [ENTER] 13 + : the claculator displays 25
Similarly
12 [ENTER] 13 x : displays 156

Also if you use a function like sinus or cosinus
12 [ENTER] cos displays the value (depending on the angle unit you are using).


I think you need to read a little more on the RPN before you get accustomed to this way of doing thing. The best reference is your calculator Getting started manual.


Hope it helps.

Posted on Aug 24, 2009

adnanbhatti
  • 1188 Answers

SOURCE: HP48GX Calculator "On" button works intermittently

The calculator battery may be weak. Replace 3 AAA cells and check if it works.
It is possible that sweat from your or someone else's hands hand leaked inside and dried up leaving a salt residue between the connections.
Remove the screws on the back panel to dismantle your calculator then use a piece of paper to clean the contacts between the top and bottom connector.
If you cannot get this done then take it to a watch repair shop. The person there can assist you.

Posted on Sep 09, 2009

  • 1 Answer

SOURCE: the calculator, hp49g+, will not turn on by pressing the "ON".

Hi, if pressing on and F5 together immediately starts the selftest your keyboard is OK, but one of the capacitors on the HP49G PCB are broken. I replaced all three and the turn on/off problem was gone.

Hope this helps.

Joachim

Posted on Nov 20, 2009

  • 7993 Answers

SOURCE: My HP 48G does not come on.

Hi,
Warning
In the keyboard test (below), make sure the keys are pressed in the right order. If the calculator fails the keyboard test then it needs repairs. (Ignore the begining of the post and skip to the last part For Repairs )

You can reset the calculator:

Turn the back of the calculator towards you. Extract the top left rubber pad on the back of the calculator and use a paper clip to press the Reset button. If that does not restore the calculator to health, you should perform the dagnostic tests.

Make the calculator perform a
Self test.

  1. Turn calculator on
  2. Press and HOLD the key [ON]
  3. Press and release the key with "E" to its right (the one before last in first row)
  4. Relaese the [ON] key.
It tests the RAM and ROM. You will see various patterns on screen. Afterwards you should see
IROM OK,
IRAM OK,
HP48GX OK
The self test will continue repeatedly until you perform a
System Halt
  1. Press and HOLD the [ON] key
  2. Press and release the "C" key
  3. Release the [ON] key.
The empty stack should appear.

If you do not see IROM OK and IRAM OK, the calculator requires service.

If the above procedure is successful, you may want
to test the keyboard.
  1. Turn calculator on
  2. Press and HOLD the [ON] key
  3. Press and release the "D" key.
  4. Release the [ON] key
  5. Press and release the "E" key. KBD 1 should appear on the top left corner of the screen.
  6. Starting at the upper left corner of the keyboard, and moving Left to right, press every key in sequence. If you follow the sequence and the keys are functioning properly you should hear a hight pitch sound at each press.
  7. If everything is OK, when you press the last key (+) the screen displays KBD 1 OK.
To exit the keyboard test proceed as described above under System Halt.

If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.-

For repairs
There is an HP customer self repair (CSR) which you can contact. On the site it is sais that the service is available for products under warranty or on contract. but you have nothing to lose by contacting them. Here is the link to the web site

You can also try this site. They do repairs on most models, except the newer ones.

Hope it helps and Thank you for using FixYa.
Do not forget to rate the solution.

Posted on Nov 30, 2009

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Hello,
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You should expect this kind of errors once in while, especially if batteries have been depleted for a while or have been replaced.

Hope it helps.
Thank you for rating the solution.

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