XD26, XD26-II, RS-A01Pro（YL81F display） how to close the power passward

The display shows 19P, The power-on password is enabled, the initial password is 1212.
If password is NOT 1212 , the guest has changed the password.
But you can close the power-on password, please check the video. Or you can check YL81F display manual 6.10 Power-on password setting