1 The second rectangle has a length of 16 centimeter (6.3 in) and a width of 8 centimeter (3.1 in). 2  Find the linear scale factor between the two shapes. 3  The length of the smaller rectangle corresponds to the length of the larger rectangle. 4  The length of the smaller rectangle equals 4 centimeter (1.6 in).
Reset the Keypad. The Smart or Learn button on the motorized unit attached to the garage ceiling resets the keypad and the control unit that operate the garage door opener's motor. You'll need to enter a new code into the keypad to make it operational again and reprogram the control unit.o verify that the reset took, enter the old PIN code into the keypad to see if it opens the garage door. If it does, the reset didn't take. Repeat the step to reset the keypad and verify the old code doesn't work before proceeding.
The learn button is the button that programs remotes to the unit. If your opener has a wire hanging from it than this is the antenna and the learn button is always close to it. You will have to have someone push this button once while you press the desired Homelink button in your car for about 2 seconds.ake this remote and hold it about 3-5 inches from the 3 programming buttons in your car. Now press the remote button and the desired Homelink button at the same time until you see the LED light flash slow then fast. Now release both buttons and press the homelink button to see if it activates the garage door opener.