How to do your own daily maintenance of the mouse keyboard

First, the daily maintenance of the mouse

The price of the mouse is really cheaper than other hardware devices on the computer. But once something goes wrong, maybe more people will pay for one more. In fact, the maintenance of the mouse is not difficult, as long as the use can be paid attention to good. Even if you have a problem, you might as well give yourself a hands-on opportunity, so that can save money and can practiced hand, why not.

1. Mechanical mouse

Mechanical mouse in use for a period of time, the rubber ball into the sticky dust attached to the drive shaft, will cause the drive shaft transmission uneven or even be stuck, resulting in a reduced sensitivity, control will not be as convenient as the first buy when flexible. At this time, you just need to turn over the mouse, take off the plastic round cover, take out the rubber ball, with water-free alcohol cotton balls to clean and then dry, and then re-installed, you can return to normal.

2. Opto-Mechanical Mouse

Photoelectric machinery mouse in the light-emitting two-stage tube, photosensitive three-stage tube are relatively thin parts, more afraid of violent shaking and vibration, in use must pay attention to avoid hitting the mouse, or strong pull the wire. When you click the mouse button, do not force excessive, so as not to damage the elastic switch. The best mouse equipped with a good mouse pad, not only greatly reduce the dirt through the rubber ball into the mouse opportunity, but also increased the friction between the rubber ball and the mouse pad, operate more handy, but also play a certain role in reducing vibration to protect photoelectric detection devices.

3. Opto-Electronic Mouse

When using optical mouse, special attention should be paid to keep the photosensitive plate clean and photosensitive state is good, to avoid dirt attached to the light-emitting secondary tube or photosensitive three-stage tube, shielding the reception of light. Be careful not to hot-plug your mouse in any emergency situations. This makes it easy to burn out the mouse and the interface. In addition, the mouse can be flexible operation of a condition is that the mouse has a certain degree of drape. After long-term use, with the mouse base Four corners of the small cushion layer is ground low, resulting in the mouse ball drape decreases, the mouse flexibility will be reduced. At this point, the mouse base is elevated in a few corners, usually to solve the problem. The material can be used in office, such as transparent paper, a layer can not cushion two or more, until the feeling that the mouse has been fully restored to the flexibility.

　Second, the simple maintenance of the mouse

Mouse maintenance is relatively simple, almost all faults are broken, key contact poor, mechanical (optical) system dirty caused, a small number of inferior products will also have false welding and component damage, which component damage to light-emitting diode aging, crystal oscillator, IC damage is common.

1. Disconnection fault

Break fault often occurs in the plug or the elbow of the mouse connection line, the performance of the cursor is not moving or when bad, with the hand to push the connection, the cursor jitter. Such a fault as long as it is not broken in the PS/2 mouth plug, generally not difficult to deal with, as long as the corresponding tools to re-weld after shearing.

2. Key failure

The button failure behaves as the cursor moves normally, but the key does not work. The original mouse can be desoldering, open the micro-switch, carefully clean the contact point, some lubricating grease, return to the position can be repaired. No-brand inferior mouse button failure more than the reed break, because some are plastic reed, treatment method can only be replaced.

3.X, Y axis failure

Also some of the mouse failure performance of the X-axis or the y-axis completely failure, after cleaning the mouse ball nest no obvious effect. This situation requires that the mouse shell be opened for further inspection. Open the mouse shell, do not hard to pay attention to the label or warranty affixed with hidden screws, some mouse links will also have plastic barb, disassembly should be more careful. Open the mouse shell and check whether there is a noticeable disconnection or the phenomenon of the component of the virtual welding. Some mouse open the shell after the failure will automatically eliminate, most of the reason is the light-emitting diodes and photosensitive transistor distance too far, you can use the hand to send and receive the tube pinch tighter, fault can be ruled out. The removal of the mouse should not be carried out in a charged state, in case of electrostatic or misoperation damage the computer interface.

4. Contact Switch Damage

For the more valuable mouse if you confirm that a contact switch damage caused the key to malfunction, and over the warranty period, you can find a cheap mouse to remove its contact switch to swap. For the use of special specifications of the contact switch, may not find a substitute, you can remove the infrequently used contact switch, such as the middle button contact switch, to temporarily replace the work of important keys.

　Third, the daily maintenance of the keyboard

The correct use and maintenance of the keyboard is very important to the normal work of the computer, in the use and maintenance of the keyboard, you need to pay attention to the following issues:

In the use of the process, pay attention to keep the keyboard clean and hygienic. Excessive dust contamination can cause problems for the circuit to work properly, and sometimes even error operations occur. Sometimes small pieces of debris fall into the gap in the keyboard surface, may cause the key to be squeezed, and even cause a short circuit and other failures. Maintenance of the keyboard is mainly the regular cleaning of the surface of the dirt, daily cleaning can be used to wipe the keyboard with a soft and clean wet cloth, for difficult to remove stains can be removed with a neutral detergent or computer-specific cleaning agent, and then scrub and dry with damp cloth. For cleaning in the gap can be treated with a cotton swab, all cleaning work should not use medical alcohol, to avoid corrosion of plastic parts. Cleaning process to be carried out in the shutdown state, the use of wet cloth not too wet, so as to avoid dripping into the keyboard, many of the capacitance of the keyboard is due to the failure of the electrical capacitance, some of the keys appear unresponsive phenomenon, the need to open the keyboard inside the dust treatment. For the mechanical keyboard some key failure of the key cap under the elastic part of the problem, in the absence of spare parts can be used with some less commonly used keys to replace the use.

Be careful not to spill liquids on your keyboard. Because most of the current keyboard is not waterproof device, once the liquid flow into, it will cause damage to the keyboard, resulting in poor contact, corrosion circuit or short circuit and other failures. If you accidentally make a large amount of liquid into the keyboard, you should immediately power off the computer, the keyboard interface unplug. Clean the keyboard surface first, then open the keyboard with a absorbent cloth (paper) to dry the internal water, and naturally dry in the ventilated place. Fully air-dried, and then determine the internal keyboard completely dry, before the test machine, so as to avoid a short-circuit caused by damage to the host interface.

When operating the keyboard, do not use a strong percussion, to prevent damage to the mechanical components of the button failure. When changing the keyboard, you must cut off the computer power, and some of the keyboard shell has plastic barb, disassembly needs to be extra careful.

　　Iv. diagnosis and maintenance of keyboard faults

1. Keyboard mouse to plug the black screen caused by the boot

For some computers, the keyboard and mouse interface is inverted, resulting in a black screen after booting. Because the current computer motherboard, both interfaces are PS/2 interface, if the reverse, the boot may be black screen, but will not burn the device. We can assume that the motherboard is placed flat, then the mouse interface is on, the keyboard interface is under. If the keyboard and mouse are on one line, pay more attention to the correct connection. The solution of course is very simple, as long as the computer after the shutdown, the keyboard and mouse interface Exchange can be done.

Note: There are other reasons why the monitor has a black screen after booting, this is just to remind the keyboard and mouse to reverse the situation.

2. Some keys cannot be typed

When you tap certain keys to not work properly, you usually need to clean the inside of the keyboard. This is a common failure, some keys are often used, more prone to problems. It may be because the keyboard is too dirty, or the spring of the key is out of elasticity, so you need to keep the keyboard clean.

The solution is: After the switch off the keyboard interface, the keyboard turned on the chassis, with a cotton swab with a water-free alcohol scrub button and the key to the part of the bonding cap. Some keys press and no longer play frequently used keys sometimes press can not rebound, in addition to the use of excessive number of reasons, it is likely to be too much force, or each press time too long, resulting in the spring elasticity function under the button subsided, unable to hold up the button. The solution is similar to the previous situation: After the shutdown, open the keyboard chassis, find the corresponding key spring, if the old damage can not be repaired, you must replace the new spring; if it is not too serious, you can first clean, and then put a positive position, apply a little grease, improve elasticity.

3. Individual keys are not very sensitive

When the keyboard self-test everything is OK, the individual keys are knocked hard, the characters typed are completely normal, but the tap is not responding. This shows that the keyboard interface and cable is not a problem, these keys at the same time failure is often not the key of the fault, it is likely that the circuit caused by failure.

troubleshooting, you need to first open the keyboard, the capacitive keyboard is composed of three layers of transparent plastic film overlap, the upper and lower layers are coated with a number of horizontal longitudinal conductive strips, the middle is not coated with conductive strips of the film as the isolation layer, but in the corresponding key to open a small hole. When a button is pressed, the conductive bar of the plastic film on the upper and lower layers is contacted at the through hole, and the input of the key can be completed. This type of keyboard has a high sensitivity, so you can type characters by tapping the key. In the upper right corner of the keyboard there is a small circuit board consisting of a microprocessor um6868-05/9625m/m516d0 and several resistors, capacitors and diodes. Observe the key of individual failure keys, found that they are on the same column, along the conductive layer inspection, but also found that there is a fracture. Remove the screws that fix the circuit board, wipe the circuit board from contact with the conductive layer with a water-free alcohol sponge, and replace it with the same. Plug the keyboard back into the console if the power-on detection finds that the fault remains. And then re-open the circuit board, careful inspection, found that the failure of the key column of the conductive layer through the interface by the circuit board jumper and a microprocessor pin connected to the phenomenon of false welding, which is sometimes the key to the keystroke can type characters. The virtual solder point re-weld good, installed keyboard online power, fault can be excluded.