Question about HP 48gx Calculator

1 Answer

I HAVE A HP-48GX THAT WANT TURN ON.

I HAVE PUT NEW BATTERYS IN IT, IS IT POSSABLE TO DO A HARD BOOT OF THE HP48GX

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  • Anonymous Mar 05, 2009

    my calculator doesn't turn on. i put new bateries an there is only a simbol in the screen

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1 Answer

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  • HP Master
  • 7,987 Answers

Hello,

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.

The following procedure valid for the 48G should work for the HP48GX.
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.
Hope it helps.

Posted on Nov 07, 2009

  • k24674 Nov 08, 2009

    If calculator requires repairs,



    There is an HP customer self repair (CSR) which you can
    contact. On the site it is said 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.




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Need a Manual for my TDS GX card used with HP48GX


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Mar 09, 2011 | HP 48gx Calculator

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48GX has been idle for 4 years.Wont turn on. Is there an internal battery that I can replace?


The 48GX runs on three AAA type alkaline batteries. However, if the device was unused that long, the button cells used for backing up the RAM cards may also be depleted, and the calculator will report "low battery" displaying the ((.)) symbol, even with fresh AAA cells installed.

The RAM card mounted batteries are type CR2016.

Main batteries:
  • Remove the calculator battery compartment door by pressing down and sliding it off away from the calculator.
  • Turn the calculator and shake the batteries out.
  • Replace with a fresh set of AAA alkaline batteries. Polarity is marked on the bottom of the battery compartment.
  • Replace the battery compartment door by sliding it back in place.
RAM card batteries:
  • Turn the calculator over and remove the plastic cover over the plug-in card ports (display-end of the calculator).
  • HP recommends to turn on the calculator while replacing the RAM card battery to avoid memory loss. I assume, your HP48GX has no marbles to recover by now anyway, so it does not matter, I guess.
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I would like to buy another programme module topographic Topo 1 and Topo 2 for my calculature HP 48 SX giorgiombr@yahoo.it ...


Here is the link to a web site where you can find resources for the HP48GX ( apparently your calculator is an HP 48SX).

On this other site you can view surveying software for the HP 48GX that is still available for sale.

Aug 14, 2010 | HP 48gx Calculator

1 Answer

I just changed the battery in my HP 48GX that I haven't used in some time, but the alert symbol is on and nothing else is happening


Hello,
The following procedure valid for the HP 48G should work for the HP48GX.
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.
Hope it helps.

Nov 07, 2009 | HP 48gx Calculator

1 Answer

Have a 48GX that stopped working, placed new doubleA batt no response... Note a wird meshed blue line at the center of the screen... Thx jsd


Hello,
The following procedure valid for the HP 48G should work for the HP48GX.
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.
Hope it helps.

Sep 15, 2009 | HP 48gx Calculator

1 Answer

Hp48gx is autistic


Hello,
The following procedure valid for the 48G should work for the HP48GX.
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.
Hope it helps.

Jul 16, 2009 | HP 48gx Calculator

1 Answer

My HP 48GX with COGO Card is running slow.


Hello,
You should perform the dagnostic tests.

The following procedure valid for the 48G should work for the HP48GX.
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.
Hope it helps.

Nov 12, 2008 | HP 48gx Calculator

1 Answer

HP 48GX problem


Hello,
.
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.

The following procedure valid for the 48G should work for the HP48GX.
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.
Hope it helps.

Sep 03, 2008 | HP 48gx Calculator

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