-a single HI-LO chime is heard.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 switch to the RAD position.
 3. At all attendant stations:
-lift the handset from the cradle.
 -speak into the handset and listen for the reply.
4. At all attendant stations:
-put the handset back to their cradle.
 5. On the Capt audio selector panel:
-release the INT/RAD switch.
 -
push to release the CAB rotary knob.

-
push to release the CAB
pushbutton switch.

On the respective ACPs 340RH:
-
the pink light goes off.

 On all AIPs 320RH:

 -
the green light goes off.

 In the cockpit and at all attendant stations:

-
the message and the reply are correctand clear.

On all AIPs 320RH:

-
the CAPTAIN CALL message goes off.

On the Capt audio selector panel:

-
the CAB rotary knob integral lightgoes off.

-
the CAB pushbutton switch integrallight goes off.

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 Subtask 23-73-00-710-074
 C. Do the test of the forward attendant call from the cockpit.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the CALLS panel 21VU in the cockpit: - push the FWD pushbutton. 
R 
R R  2. On the audio control panel in the cockpit: - push the CAB pushbutton switch. 
- push the CAB rotary knob. 
- turn the CAB rotary knob fully cw. - push and hold the INT/RAD switch to the RAD position. 3. At the forward attendant station: - lift the handset from the cradle.

On the forward LH Area Call Panel(ACP):
-
the pink indicators come on.

 On the forward LH Attendant Indication Panel (AIP):

 -
the green indicator comes on.

-
the message CALL CAPTAIN shows. At all attendant stations:

 -you hear a single HI-LO chime.
On the audio control panel in the cockpit:
-
the integral light of the CAB pushbutton switch comes on.

-
the integral light of the CAB rotary knob comes on.

On the forward LH ACP:
-the pink indicators go off.
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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R R 
- make an announcement. 
R  - put the handset back in the cradle. 
R R  4. On the audio control panel in the cockpit: - release the INT/RAD switch. - push to release the CAB rotary knob. 
- push to release the CAB pushbutton switch. 

On the forward LH AIP:
 -
the green indicator goes off.

-
the message CALL CAPTAIN changes to CAPTAIN.

 Through the forward attendant station handset and the cockpit boomset:
-you hear the announcement. On the forward LH AIP:
-
the message CAPTAIN goes off.

On the audio control panel in the cockpit:

-
the integral light of the CAB rotaryknob goes off.

-
the integral light of the CABpushbutton switch goes off.

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 Subtask 23-73-00-710-074-B
 C. Do the test of the FWD ATTND CALL from the cockpit.
 -------------------------------------------------------------------------------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.
 -push and hold the INT/RAD switch to the RAD position.
 3. At the FWD attendant station:
-lift the handset from the
cradle.

On the FWD LH ACP 340RH:
-
the green light comes on.

 On the FWD AIP 320RH:
　
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