Common fault handling method of computer keyboard

Keyboard can be said to be our most commonly used computer is the most important input device. If the keyboard is missing, the computer loses the ability to actually interact with people. This not only requires the keyboard not to fail frequently, but also requires the use of keyboard input accurate and sensitive, so that the computer really listen to us, rather than let it bother us. That being the case, what is the reason for the keyboard malfunction and how to solve it? Now let's take a look.

Some keys on the keyboard cannot be typed

This time the computer startup self-test is normal, but after startup, most keys can be typed normally, there are individual keys cannot be typed. This situation indicates that the circuit on the keyboard, the host keyboard control interface is normal. Individual keys cannot be typed because the spring in the key holder is not valid or the button is contaminated with dust. This time we just open the keyboard, with a dry towel to rub the button with the metal contact place, if the spring is broken, it is careful to twist it, really can not change one on it.

The keyboard doesn't type the information we want.

When the machine is started normally, when we enter the character of a key in the input box, the characters on the standard key are not displayed, but other keys are displayed. In this case, most keys are normal, there are several key input does not show the character of the keys themselves, and display other keys of the characters, is usually the key link loose or off, resulting in a string of key code. To solve this situation, just turn on the keyboard, check the key line, find out the fault location, adjust the correct, then tighten the screws.

The keyboard interface is broken.

Sometimes, the interface of the keyboard is broken, how to input also do not matter. In this case, we need to take the keyboard apart. Remove the key cap, drip one or two drops of alcohol, put on the key cap, repeated several times, such as can not type, indicating the spring failure, repair the spring or replace the new keyboard. In general, the keyboard interface on the motherboard is connected to the keyboard, not often unplugged, should not be easily damaged. But in the actual work of the keyboard interface damage of the motherboard is very much, most of the original is the occasional start of the computer when the host reported keyboard errors, press "F1" continue to be able to operate normally, and then the keyboard can sometimes use sometimes not to use, to the last keyboard is a bit of a function also did not. Even if you replace the keyboard or the same fault, you can exclude the reason for the keyboard, and then conclude that the motherboard has a problem with the keyboard interface. The general keyboard is controlled by the South Bridge through a dedicated peripheral chip, or directly through the South Bridge chip control. If the peripheral chip is damaged, it will also appear as keyboard can not be used, if the keyboard, mouse and USB interface power is not normal, the keyboard can not be used, but also because of poor keyboard interface caused by the keyboard sometimes when it is not available.

Dust cleaning of the keyboard

Used for a long time, either the keyboard surface or the inside of the keyboard, may be filled with dust. How to clean it up at this time. We can gently pat the keyboard in turn, let the dust fall out, or you can use a damp cloth to clean the keyboard surface, but note that the wet cloth must be wrung to prevent water into the keyboard inside. A keyboard with a longer duration needs to be disassembled for maintenance. Removing the keyboard is relatively simple, unplug the keyboard and the host connection cable plug, and then put the keyboard front to the workbench, unscrew the bottom plate screws, you can remove the keyboard back cover. If you are cleaning the inside of the keyboard, be sure not to clean it with water because it can easily corrode the metal inside the keyboard. Can be washed with alcohol. You can also use a paint brush or oil pen to remove dust from the board and keyboard keys. I remember one time I did not know to wash with water, have not completely dry just wait to take it, the result is completely burnt out.

After cleaning or wiping, we can install and restore it. Installation and restore attention to the first note to wait for the key, front panel, rubber pad All dry after the party can restore the keyboard, otherwise it will lead to rust inside the keyboard, in addition to pay attention to the position inside, otherwise it will cause the key can not be connected.