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Re: The 7, 8 and 9 keys do not work on my 48sx. The
Hello, In the keyboard test, 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.
The following procedure valid for the 48G should work for the HP48GX. Make the calculator perform a Self test.
Turn calculator on
Press and HOLD the key [ON]
Press and release the key with "E" to its right (the one before last in first row)
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
Press and HOLD the [ON] key
Press and release the "C" key
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.
Turn calculator on
Press and HOLD the [ON] key
Press and release the "D" key.
Release the [ON] key
Press and release the "E" key. KBD 1 should appear on the top left corner of the screen.
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.
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.
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1.Make sure the "Caps Lock" key is not on. Though this will be obvious to most people, if your keyboard is typing in only upper-case letters it can't hurt to check. Look at the "Caps Lock" indicator light on the top right corner of your HP keyboard. If the light is on, strike the "Caps Lock" key on the left side of your keyboard. This will turn the "Caps Lock" off, allowing you to type in lower case letters again.
2.Make sure the "SHIFT" keys on your HP keyboard are not stuck. Dust and dirt can build up on a keyboard over time, which can cause certain keys to stick. If either of your keyboard's "SHIFT" keys get stuck, your computer will type in only capital letters. Use a toothpick or cotton swab to remove the gunk from the key, which should help it return to its normal position.
3.Unplug your HP keyboard and then plug it back it. This will remove the device from your operating system and then automatically add it back in. This can have the same effect, essentially, as restarting your computer. If your keyboard was typing in capital letters due to an error being stored in your operating system's memory, that error will now be cleared and the HP keyboard will function as normal again.
4.Update your HP keyboard driver. Click "Start" and then right click on "Computer." Click "Properties" and then "Device Manager." Right click on the listing for your keyboard and then click "Update Driver." This will update the computer software that is associated with your HP keyboard. If your keyboard was typing in all capital letters as a result of an error with this driver, the error will now be fixed and you can use your keyboard normally again
Go into System Preferences and select Keyboard & Mouse • Under Keyboard click on Change Keyboard Type... button • Follow the basic steps to reset your Keyboardvia the screen prompts. Once you have done that select the Keyboard Shortcuts tab. • Click the Restore Defaults button.
Now test your keyboard's return key. If this still does not resolve the Return key not functioning in the normal return key functionality, Click Show All and go to the Universal Access pane in System Preferences and under Keyboard tab, make sure the Sticky Keys radio button is turned off.
Try these steps and let me know if there is any change.
This could be an issue of a wear and tear, you could run a test on the keyboard:
1. Turn on computer 2. Tap F12 3. Select Diagnostic 4. Follow the on screen instruction (until test finished aproximately 10-15min.) 5. If prompts " do you want to run remaining memory test 6. Select " No" 7. Select Test System 8. Select Custom Test 9. Run keyboard test
If there is an error message about the keyboard it means, you need to replace it. If you are still covered by the warranty, just call dell techsupport and they will replace the keyboard. Hope this helps
You can try to perform the self-test. Procedure is as follows.
To perform the self test on units with two batteries:
Turn the calculator off.
Press and hold the and keys; keep both keys held down for the next step.
Press the key so the and keys are held down simultaneously.
Release the key.
Release the key, followed by the key. The main test screen displays the following: '1.L 2.C 3.H'.
Press to perform the LCD test (all LCD segments will be turned on). Press any key to exit.
Press to perform the checksum test and see the copyright messages. Press any key to go from one screen to the next until the main test screen, '1.L 2.C 3.H', is displayed again.
Press to perform the keyboard test. Press EVERY key on the keyboard until all the keys have been pressed at least once. The screen will progressively turn off with each key press. Once all the keys have been pressed and the screen is clear, press any key to return to the test screen.
Press to exit the test system. This will also turn the calculator off.
If the calculator detects an error at any point, it will display an error message.
For the HP 12c financial calculators with one battery, to perform the LCD self test:
Turn the calculator off.
Press and hold the key, and simultaneously press and hold the key.
Release then .
After a few moments, all elements of the screen should be displayed. Press any key to exit.
I finally solved the problem. In HP laptops some keys of the keyboard have two functions. I had accidentally change the function of those keys while cleaning the keyboard with a paint brush. So, I solved the problem by trial and error, pressing on the alt key, while pressing another key. I think it was the alt and the k, but i'm not sure. While pressing these two keys a light in the keyboard flashed and it made a sound, and the problem was solved.
This is a system board POST/BIOS error code (nothing todo with Windows). The ERROR 210: is a standard POST (Power On Self Test) errormessage that indicates an error with the keyboard. The error condition is thata keyboard scan code was received from the keyboard when none was expected,after the keyboard was reset.
If this occurs most of the time when you power on yoursystem, then it indicates that a key is sticking down or the key mechanical orelectrical parts are broken. Sometimes blowing out and cleaning out around thekeys will resolve this problem. Otherwise, you need to replace your keyboardwith a new (or at least a working) one.
This keyboard is horrible. Several of the keys stick or will not work. I called customer support which was not very helpful. They told me to take the batteries out of the keyboard then retry the keyboard and if it still did not work return it to the store I bought it from.. I like the set up of the keyboard but? to bad it does not work. As I am typing this with my old keyboard because I can not use the the s520
Try in safe mode:
Switch on the laptop and start tapping 'F8' key multiple times (especially when you get the dell logo.Locate safe mode and hit enter (by using the down/up error key).Open a notepad and check all the keybaord keys one by one and confirm if it works.
Switch off the laptop (if it is already switched on). Press "Fn" and power key together, this will launch a test (psa), wait for a message "where the color bars displayed",press 'Y' to continue the test. follow onscreen instructions till you rach a window with four options,(express test,symptop test,custom tes,,,,,), click on custom test and select keyboard, click on run test.....and confirm if keybaord works while running the test.
examine the keyboard for dirt caught under the keys, this maybe diffucult to spot. this is not going to be easy at first, as the problem may lie further and at a more difficult angle, check also for damage to the keyboard and try to find a mechanical solution before suspecting the drivers here, as this looks like it may just be something caught under the keys, or the keys being dragged down together rather than a major electronic foulup.if you find nothing, then suspect drivers. after that, try checking for programming errors.