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Posts Tagged ‘Keyboard’

How does HP Laptop Keyboard 441541-001 work

07 Aug

Keyboard is the most widely used computer input devices, which consist of keys, conductive plastics, as well as the encoder interface circuits so on.

On the keyboard usually has hundreds of buttons, each button is responsible for a function, when the user presses one, the keyboard encoder can quickly this button corresponding to the code transmitted to the computer through the interface circuit in the keyboard buffer by the CPU for recognition processing. In layman’s terms that is, when the user presses a button, it will be the circuit board through the conductive plastic cable connected to this key generated signal, the signal generated by the keyboard interface, quickly sent to the CPU.

“Keyboard key failure” Trouble Shooting

“Keyboard key failure” This is what we often encounter problems. This phenomenon usually occurs because the circuit board or a conductive plastic on the dirt, making between the two can not be properly connected. Other factors may also be, for example: the keyboard plug is damaged, circuit problems, damage to the motherboard, CPU is not working properly and so on, but not the main reason. Therefore, we only need to carry out descaling their work.

Take HP Laptop Keyboard 441541-001 as an example, operation steps are as follows:
1. Disassemble the keyboard. Note that when you open the keyboard, be sure to button surface (that is, our operations side) down, circuit board up, otherwise, each key on the conductive plastic may have come off, giving you repair trouble.

2. Opening circuit boards, circuit boards are generally made of soft plastic film, the top row of buttons marked with lines, with the concentration of alcohol, preferably more than 97% of cotton (75% of medical alcohol can also be cotton, because I had used , but the best is to use high concentrations of alcohol, cotton) and gently scrub two times in the circuit board. Key part of the line for the failure to take care of several times more.

3. View key failure part of the conductive plastic, if the above accumulated a lot of dirt, the same use of alcohol scrub. Suppose conductive plastic is damaged, then I suggest that you can not key on the commonly used conductive plastic for the damaged part, although this initiative not allow the keyboard to play out all functions, but the most at least it can extend the life of commonly used keys.

4. Remove the keyboard in a corner in the dirt, tools can be a brush, small brush and so on, but note that some action should be gentle.

5. See the module whether the cold solder joint or Sealing-off welding can be carried out repair welding work (using tools such as conductive silver paint, concrete repairs please refer to the next section notebook keyboard repair examples).

6. Install a good keyboard. It should be noted here that we have to wait and then to clean the alcohol evaporates.

More information about laptop keyboards available at http://www.hootoo.com

 
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Laptop Keyboard Maintenance Can Save You Costly Keyboard Repairs

05 Aug

Regular maintenance on your computer can extend its life and save you from needing costly laptop keyboard repairs. Who knows – perhaps it can even extend your own life too.

consider the germs harboring on your keyboard for instance. More than likely you do not rinse your hands everytime before you start to type, not a great deal of folk do. If you have got a white keyboard it is simple to discover how much dust has amassed on the keys but if it’s’s black you do not have a clue.

there’s a constant flow of dust and mud in the air. If you clean your own house, you’ve got a sensible idea of how much dust accumulates in a short amount of time. In some parts of the country where it is more dry and you leave your windows open, you can dust one day and find the dust is back the next . If your table collects that much dust in such a short amount of time, consider how much has built up between your keys over a year or more. It is time to do your personal computer spring cleaning even if spring is long past.

the very first thing you wish to do is disconnect the keyboard from the computer and you may want to label the slot so you remember where to plug it back in. Then turn the keyboard over and very gently shake the board and press the keys to free any particles of dust, dirt or food that dropped between the keys. Turn the keyboard upright again and spray around the keys with a can of compressed air acquired from any computer store. This may dump any remaining particles. Now it’s time to clean off the keys.

There are three ways that you can clean the keys. Do not spray any cleaner immediately onto the keyboard. Take a clean soft material and spray it with a disinfectant then wipe the keys or use disinfecting wipes or dip swabs in rubbing alcohol and wipe each individual key. You’ll be dazzled at how much dust comes off. This straightforward process could save your cash. After everything is clean and dry, plug the keyboard back into its slot. Who knows you may find you can now even type a lot quicker – but don’t count on it.
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Working on my site http://www.bestcomputerrepairinchicago.com

 
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Get To Know The Components Of The Keyboard

28 Jul

Your computer use output devices such as your Monitor to send data to the computer user.This same user must also use input devices to send data to the computer.

Even though you won’t open your keyboard to make any repairs other than to unstuck a stuck key or replace a broken retainer,its a good idea to study every part of your keyboard. If you’re blessed enough to have an extra keyboard, take the time to open the case and study each component in great detail.

Some of the special features of newer keyboards are that they can be Cordless and is often used with such devices as the cordless Mouse.Special keyboards may be used when the user may want have the freedom of movement. The average user will have very little use for the cordless keyboard or mouse.

The keyboard come in layouts which refer to how to keys are arranged.The Alphanumeric Key layout are the letters, numbers,and symbols.This is the most commonly used type the keyboard layout. The QWERTY Layout is the most popular Alphanumeric layout

The keyboard must have power to operate and it get this power from the motherboard.The operation of led indicators let you know the keyboard is receiving power.

Use the right rool,usually a screwdriver to open the case and study the components inside.You will not replace these components but it will boost your understanding of computers when you know every part of every device in your computer.

THE KEYBOARD CASE

Yea,I know,this is going to be exciting to discuss. While there is nothing much to discuss about the case of the keyboard,we don’t want to cut corners.

You may have to help someone with their ailing keyboard so you want to be on your toes. With that in mind,let’s get hyped up as we begin our keyboard case discussion.

Ready,the keyboard case is almost always plastic. I told you this would be exciting.This case holds the keycaps,the internal controller and other chips.

Keyboard LED Indicators will have a set of three LED indicators. They are used to display the current operation of the keyboard. NUM LOCK, CAPS LOCK,and SCROLL LOCK are the three standard led indications found on most keyboards.

The most popular keys such as the Enter Key and the Space Bar will get used often.These keys may be the ones that will need to be replaced.The springs or clips underneath may give in to wear and tear over time.

INSIDE THE KEYBOARD

As the CPU is the brains of your computer,the brains of your keyboard is the circuitry inside.These circuits and chips process the operation of every keystroke.

The keyboard has its own Microprocessor and ROM or Read Only Memory that the micropressor use to transfer data.

Some keyboards are programmable and uses the EEPROM or Electrically Erasable Programmable Memory, which holds data,acting like a very small hard drive.

CABLES AND CONNECTIONS

Wired keyboards will have a cable that connects to the rear of the computer through a serial connector. There are two types of keyboard connectors.The large 5-DIN connector or Deutsche Industrie Norm was used on the first systems up to the mid 1990s.

The smaller 6-DIN was made by IBM for the PS/2 and later model computers.Each pin provides a special function to transfer data to the computer.

INSTALLING THE KEYBOARD

Unless you’ve invested in one of those super duper special featured keyboards which will reqiure the installation of software,you simply connect the keyboard to the rear of your computer.

When the system is booted up,the new keyboard will be recognized and you’re on your way.Notice the Led indicator lights to verify the keyboard is receiving power.

And that’s it.The functions of the keyboard can even be replaced if you have Windows XP.Special features help you should your keyboard decide it want to quit.www.ultimatepcrepair.com/photos.html is where to see all components of your computer.

Gather as much information and data about your system now,while it is still running smoothly.Prepare for computer breakdown before it happens.

Otis F. Cooper is solely dedicated to boosting the knowledge and confidence of every computer user. Use his informative articles and videos to understand all about the PC. Read more in depth articles for pc training and repair at http://www.repairarticles.com

 
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What To Do When Your Keyboard Fail

26 Jul

Do you think the keyboard is important?Try using your computer without it.Your computer will be almost useless without the keyboard.And like all other PC peripherals,the keyboard can and will put you down.

The keyboard is a simple peripheral and when it does go on the blink,you will be much better off pyrchasing a new one rather than considering repairing it,unless the problem is something simple like a stuck key.

TROUBLESHOOTING BASICS

As we look into problems with the keyboard,remember the check the obvious first and as with all problem solving procedures,don’t be tempted to take shortcuts. Follow these procedures to resolve common keyboard problems.

KEYBOARD WILL NOT RESPOND

1st. Restart the computer. This sometimes will resolve a computer that has froze or locked up during the first boot up.

2rd. Look behind the system unit and check to see if the cable is fully inserted into the connector. Check to see if it is in the keyboard connector and not the mouse connector.

Shut the computer off and remove the cable from the system unit.Check to see if any pins or connectors have been bent or broken.

If all pins and connectors are good.Try connecting another keyboard and restart the computer. If the new keyboard works,replace the old keyboard.

CHECK FOR KEYBOARD ERROR IN WINDOWS

If the new keyboard should fail as well,check the resource conflicts if your operating system is Windows 98 or Me.Click on Start,Settings,Control Panel,System, and Device Manager Tab in System Properties.

Windows displays your devices attached to your PC. Click the plus sign and scan the list for the keyboard. If you notice an exclamation point or a red X beside the keyboard,the keyboard has a problem.

Now highlight the keyboard,click the remove button, and click OK in the confirmation window. Close the Device Manager and restart the computer. The operating system will reconfigure the keyboard.

WINDOWS DID NOT FIX THE KEYBOARD

You have restarted the computer and the keyboard still does not work.Its now possible you have a faulty keyboard port.This may prove true if the second keyboard failed to work on your computer as well.

Though it rarely happens,an error message will appear if the keyboard get hot.Stuck keys are also causes of error messages appearing on your monitor at bootup.

POOR KEYBOARD PERFORMANCE

Keeping the keyboard free from dirt and dust,is essential to good keyboard performance. Liquid spills are common and can be cleaned with a can of compressed air.

Your settings in Windows may also be the culprit in poor keyboard performance.To check your keyboard performance,click on Start,Settings, Control Panel,and double click keyboard.

On the Speed Tab,you have the option to control the Repeat Delay,Repeat Rate,and the Cursor Blink rate.The Repeat Delay is the delay between the time you press a key and when it responds. The Repeat Rate controls just how fast the key repeats after it begins repeating.

Windows give you the ability to control features of your keyboard which will boost its performance, allowing you to perform your tasks quicker.

While the keyboard is replaced rather than repaired, it is imperative that you learn troubleshooting steps to correct most keyboard problems.You may have problems with the keyboard late at night and you may need to get it working to complete a document you may need for work.Know how to correct problems and help others that may experience keyboard failure.

Otis F. Cooper is solely dedicated to boosting the knowledge and confidence of every computer user. Use his informative articles and videos to understand all about the PC. Read more in depth articles for pc training and repair at http://www.repairarticles.com

 
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