Recently, some netizens have asked him that the Thinkpad E420 has been used for more than two years. The laptop keyboard has accumulated a lot of small debris inside, and you want to open it up and clean it up. You don't know how to start it.

       In fact, it is not difficult to remove the Thinkpad E420 keyboard thoroughly and it is easy to master several tips.

       Prepare tools first, including a screwdriver, a box for a keycap, a small brush, a cleaning tool, and so on.

       Since the bottom buckle direction of the Thinkpad E420 fixed keyboard cap is horizontal, we disassemble the keycap from the side, and use a screwdriver to gently tilt the keyboard cap sideways. The keyboard cap can easily fall off. Due to the large number of keys, the demolition of the keyboard cap is a big project that requires patience and carefulness. Do not use excessive force. It is not good to fly the keycap.

       How to clean the removed keycaps, the cleaning method is similar to the usual laundry, put all the keyboard cap into the barrel, with detergent or other detergent, wash them thoroughly with water.

The hardest thing to stay in the end is the internal cleaning of the keyboard.

The inside of the keyboard is relatively tedious. Use a brush to remove the dirt from the inside, sweep the dust and other debris thoroughly, and wipe it several times with a wrung wet towel.

       Note: In order to prevent residual moisture, and to ensure that the keyboard can continue to work after cleaning, be sure to put the keyboard cap, keyboard, ventilated place to dry.

       The last is the recovery of the keyboard. The dry E420 keyboard cap is installed in accordance with the original position, and then installed into the laptop boot test.