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.
One sensor sends a signal to the opposite sensor in the form of an invisible beam. When the beam is broken, the garage door opener will not close the garage door. You can check several things to correct the problem. First, use the wall button to open the garage door to a fully opened position.Now, wipe any debris, moisture, or fingerprints off of the lenses located on both of the safety sensors.hen the beam is broken, the garage door opener will not close the garage door. You can check several things to correct the problem. First, use the wall button to open the garage door to a fully opened position.