# COCKPIT DOOR CONTROL

### LOCK PUSH BUTTON (GUARDED) <a href="#lock-push-button-guarded" id="lock-push-button-guarded"></a>

* Controls the cockpit doors power supply.
* Activates and deactivates the electromechanical door latch.
* <mark style="color:red;">Resets the DING-DONG alarm and EMERG ENTRY command.</mark>
* <mark style="color:red;">Resets the green LED on the door’s control panel in the passenger cabin.</mark>

***

### INHIB PUSH BUTTON <a href="#inhib-push-button" id="inhib-push-button"></a>

* <mark style="color:red;">Inhibits the EMERG ENTRY command from cockpit door control panel in the passenger cabin for 500 seconds.</mark>
* <mark style="color:red;">Lights up the red LED in the passenger cabin control panel.</mark>
* <mark style="color:red;">The cockpit door opens if the INHIB push button is not pressed up to 30 seconds after the EMERG ENTRY push button on the passenger cabin control panel is pressed.</mark>

***

### UNLOCKED INDICATION <a href="#unlocked-indication" id="unlocked-indication"></a>

* Turns on when door is unlocked.
* <mark style="color:red;">Starts flashing when the EMERG ENTRY pushbutton on the passenger cabin control panel is pressed.</mark>
* <mark style="color:red;">Turns off when the INHIB pushbutton is pressed.</mark>

***

### TEST BUTTON <a href="#test-button" id="test-button"></a>

* <mark style="color:red;">Continually tests the DING-DONG alarm while the test button is pressed, regardless of audio selection.</mark>

***

### SYSTEM LOGIC <a href="#system-logic" id="system-logic"></a>

* Press and holding the cabin EMER ENTRY push button for a short time starts the cockpit chime alarm sequence.

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/image-1670245782106.png)


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