Through the aft LH attendant station handset and the cockpit boomset:

-
you hear the announcement.On the CALLS panel 21VU in the cockpit:

-
the integral light of the EMER pushbutton switch goes off.

 On the audio control panel in the cockpit:

 -
the ATT indication goes off. On the forward LH AIP:

-
the message CNCL CAPTAIN goes off.

On the aft LH AIP:

-
the message EMERGENCY CALL goes off.

On the audio control panel in thecockpit:

-
the integral light of the CAB rotary knob goes off.

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R R  ACTION RESULT -------------------------------------------------------------------------------- push to release the CAB - the integral light of the CAB pushbutton switch. pushbutton switch goes off. 
R  **ON A/C 051-099, 201-299,
 Subtask 23-73-00-710-088-A
 Q. Do the test of the priority function of the EMERGENCY CALL from the cabin.
 NOTE : The test has the same procedure for all attendant stations.____
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------

1. On the overhead panel 21VU:
-push the CALLS FWD pushbutton switch.
 2. On the Capt audio selector panel:
-
push the CAB pushbutton switch.

-
push the CAB rotary knob.

-turn the CAB rotary knob fully cw.
On the FWD LH ACP 340RH:
-
the pink lights come on.

 On the FWD AIP 320RH:

 -
the green light comes on.

 -
the CALL CAPTAIN message comes on. At the FWD attendant station:

 -a single HI-LO chime sounds.On the Capt audio selector panel:
-
the CAB pushbutton-switch integral light comes on.

-
the CAB rotary-knob integral light comes on.

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ACTION RESULT -------------------------------------------------------------------------------
-push and hold the INT/RAD pushbutton switch to the RAD position.
 3. At the FWD attendant station:
-lift the handset from the cradle.
 -speak into the handset and listen for the reply.
 4. In the cockpit:
-speak into the boomset microphone and listen for the reply.
 5. At the AFT LH attendant station:
-lift the handset from the cradle.
 6. On the handset:
-push the EMER CALL pushbutton switch.
On the FWD LH ACP 340RH:
-
the pink lights go off.

 On the FWD AIP 320RH:

 -
the green light goes off.

 -
the CALL CAPTAIN message changes to CAPTAIN.

In the cockpit and the FWD attendant station:

-
the message and the reply are correctand clear.

On the AFT LH AIP 320RH:

-
the number symbol comes on.

On the AFT LH AIP 320RH:

-
the number symbol goes off.

 -
the EMERGENCY CALL message flashes. On the FWD AIP 320RH:

 -
the CAPTAIN message changes to CNCL CAPTAIN.

 On the overhead panel 21VU:
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ACTION RESULT -------------------------------------------------------------------------------
7. At the FWD attendant station:
-speak into the handset and listen for the reply.
 8. At the AFT LH attendant station:
-speak into the handset and listen for the reply.
9. On the Capt audio selector panel:
-push the RESET pushbutton
switch.

10. At the FWD attendant station:
-put the handset back to the cradle.
 11. At the AFT LH attendant station:
-put the handset back to the cradle.
-
the CALL ON indicator light in the EMER pushbutton switch flashes.

 On all audio selector panels:

 -
the ATT indicator light comes on. In the cockpit:

 -
the crew call buzzer operates 3 times.

In the cockpit boomset and the FWD attendant station:

-
the announcement is not heard.

In the cockpit boomset and the AFT LH attendant station:

-
the message and the reply are correctand clear.

On the overhead panel 21VU:

-
the CALL ON indicator light in theEMER pushbutton switch goes off.
　
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