Applicable Models: 4084, 4084AWG, 4085, 4086, 4086AWG, 4087
Q: How do I disable the key sound on 408X series so that it does not beep when I press the keys?
A: The key sound On/Off feature is implemented on newer units. Please check your serial number in the back of the unit and look for something similar to this: 4084013640907XXXX. Check to see if your unit has 0907 as shown in bold. If you do, you have the option to disable the key sound by going into the system menu. Press "shift" + "-" to go into system menu. Then press "menu" a few times until you see "beep" on display. Use the rotary knob and turn left to change it to "1: CLOSE". Upon exiting the menu, the key sound will now be disabled.