Laptop computer keyboard is the most commonly used input device, it is generally the key, conductive plastic, encoder and interface circuit.
Usually in the hundreds of laptop keyboard keys, each key is responsible for a function, when the user presses one, the keyboard encoder to quickly encode this key corresponding to the transport through the interface circuit to the computer keyboard buffer , the recognition processing by the CPU. In layman's terms that is, when the user presses a button, it will be through the circuit board conductive plastic cable connected to the key signal is generated, resulting in a signal will be transmitted quickly through a keyboard interface to the CPU.
"Notebook keyboard failure" breakdown maintenance
"Notebook keyboard failure" that 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 properly connected. Other factors may also be, for example: keyboard plug is damaged, circuit problems, damage to the motherboard, CPU is not working properly, etc., but not the main reason. Therefore, we can only work for descaling.
The steps are as follows:
1. Open the laptop keyboard. Note that when you open the keyboard, be sure to button surface (that is, our operating side) down, board up, or conductive plastic on each key would have come off, you repair trouble.
2. Open circuit boards, circuit boards are generally made of soft plastic film, is inscribed with key cable, preferably with a concentration of alcohol in 97% cotton (75% alcohol cotton can, because I had used However, it is best 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 more than a few times.
3. View key failure part of the conductive plastic, if the above accumulated a lot of dirt, the same use of alcohol scrub. Assuming conductive plastic is damaged, then I suggest you can not key on the conductive plastic used for the damaged part, although this "shattering" initiatives can not play all the keyboard functions, but the most at least you can extend the life of commonly used keys.
4. Remove laptop keyboard in the inside corner of the dirt, tools available brush, small brush, etc., but to pay attention to some of the action should be gentle.
5. Check whether the module is soldered or welded sealing off, you can repair welding work (using conductive silver paint and other tools, please refer to the following section the specific repair laptop keyboard repair instance).
6. Installed laptop keyboard. It should be noted here that we have to wait after the alcohol to evaporate.
Gateway ML6720 Laptop Keyboard
HP Pavilion DV7 Laptop Keyboard
HP Compaq Presario F700 Laptop Keyboard
HP Pavilion DV6000 Laptop Keyboard
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