| Second, the keyboard Dell latitude D520 Keyboard | | | | failure of the keyboard itself. |
| Acer Aspire 3000 Keyboard Acer travelmate 2300 | | | | (B) the demolition of the keyboard |
| Keyboard common fault diagnosis | | | | Using the keyboard, if they discover a key failure or |
| In the computer device, the keyboard because of their | | | | other failure, it is necessary for the demolition of their |
| high frequency of use, so it is most vulnerable to failure | | | | repairs. As the entire keyboard is mounted on a printed |
| of the peripherals, one way to master the proper | | | | circuit board, to remove a button, it is more |
| maintenance is very necessary. | | | | troublesome, the general demolition of repair steps are: |
| (A) detection method of keypad fault | | | | 1. Flip the keyboard, the original screw stuck with gently |
| When the keyboard, no reaction, according to the | | | | prized open floor (to be stepping down as screws), |
| following steps to detect the keyboard itself, the | | | | removed the keyboard enclosure, remove the entire |
| existence of failures: | | | | keyboard, pull out the keycap. |
| 1. Ensure that the keyboard is correct. | | | | 2. Removed from the printed circuit board solder joints, |
| 2. Turn the computer power supply, testing whether | | | | when key switch and printed circuit boards to be |
| the normal use of the keyboard. | | | | separated from the key with needle nose pliers will be |
| 3. If you can not use, it can receive the keyboard on | | | | positioned on both sides gather the pieces toward the |
| the computer do the other tests. | | | | center in order to key units remove iron from the |
| 4. If you still can not be used, it can be confirmed is the | | | | location. |