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Wet it with water first, and then check it vigorously with a foaming cloth containing water after a while.
Add some oil, and if it doesn't work, call the door lock unit to repair it, otherwise it will be troublesome if it gets stuck that day!!
1. Factory initialization.
Press the touch button on the motherboard, and when you hear the prompt "Enter Initialization", start initialization, and there will be a prompt sound when the initialization is completed. >>>More
The new one has a hole, and it's not a regular circle, or if it's a regular one, someone deliberately keeps it, and it's used to install a lock.
Let's take the photo speed. and then help you analyze. There's really no way to say one or two without a picture.
Spray it with a plasticizer to tear it, just go to the hardware store to buy it, it's not expensive, tear it off and wipe it with clean water, and the diluted water will corrode.