Operational Test of the Cabin and Flight Crew Interphone System

TASK 23-73-00-710-003-A
Operational Test of the Cabin and Flight Crew Interphone System

ZONE: 200

1. Reason for the Job
This procedure gives the instructions necessary to make sure that the cabin interphone system operates correctly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	BOOMSET 600 OHMS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 33-14-00-710-001-A	Operational Check of the Light Test System

3. Job Set-up
Subtask 23-73-00-860-072-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(3) Energize the annunciator light test and dimming system
(Ref. AMM TASK 33-14-00-710-001).
(4) Make sure that the INT/RAD switch on the Audio Control Panels (ACP) is in the center position.
(5) Make sure that the INTEG LT/ MAIN PNL & PED rotary knob on the pedestal panel 111VU is in the BRT position.
(6) Connect a BOOMSET 600 OHMS to the captain jack panel 61VU.

NOTE: The annunciation indication and the communication is cancelled, if there are more than 60 sec. between the test procedure steps.

Subtask 23-73-00-865-053-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/ACP/F/O	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/FLT/INTPH	9RN	G08
49VU	COM/AUDIO/ACP/CAPT	4RN	G06
** ON A/C NOT FOR ALL
49VU	COM/ACP F/O/BITE/ INT 2 AUDIO/3&5 OCCPNT	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/INT/1+2	9RN	G08
49VU	COM/ACP CAPT/SELCAL/INT 1 AUDIO/AVNCS	4RN	G06
** ON A/C NOT FOR ALL
121VU	COM NAV/SELCAL	8RN	M04
121VU	COM NAV/ACP/THIRD/OCCPNT	6RN	M02

4. Procedure

NOTE: The interphone connection started from the cockpit call panel stops, if one of these conditions occurs: All called stations did a reset of the function. The AMU INT ON signal from the ACP is not operated after approximately 2 minutes. The call was not answered from an attendant handset approximately 5 minutes after the last start of the related call.

NOTE: The flashing of the ATT indicator light on the audio control panel is related to the Cabin Intercommunication Data System (CIDS) director standard. For this test, the light can flash or stay on continuously.

Subtask 23-73-00-710-052-D ** ON A/C NOT FOR ALL

A. Do the test of the EMERGENCY call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	In the cockpit, on the overhead panel 21VU:
push the EMER pushbutton switch.	the CALL ON indicator light in the EMER pushbutton switch flashes.

	In the cabin and at all attendant stations:
	you hear three HI-LO chimes.

	On all Area Call Panels (ACP) 340RH:
	the pink indicator lights flash.

	On all Attendant Indication Panels (AIP) 320RH:
	'CALL EMERGENCY' flashes.
	the pink indicator light flashes.

	In the cockpit, on the audio control panel:
	the ATT indication flashes.
2.In the cockpit, on the audio control panel:	In the cockpit, on the overhead panel 21VU:
push the RESET pushbutton.	the CALL ON indicator light in the EMER pushbutton switch goes off.

	In the cockpit, on the audio control panel:
	the ATT indication goes off.
3.At the forward attendant station:	On the forward left AIP:
lift the handset from the cradle.	'> EMERGENCY' shows.
	the pink indicator light goes off.
4.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
5.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
6.At the aft left attendant station:	On the aft left AIP:
lift the handset from the cradle.	'> EMERGENCY' shows.
	the pink indicator light goes off.
7.Through the forward and aft left attendant-station handsets and the cockpit boomset:	Through the forward and aft left attendant-station handsets and the cockpit boomset:
make an announcement.	you hear the announcement.
8.At the forward attendant station:	On the forward left AIP:
put the handset back in the cradle.	'> EMERGENCY' goes off.
9.Through the aft left attendant-station handset and the cockpit boomset:	Through the aft left attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
10.At the aft right attendant station:	On the aft right AIP:
lift the handset from the cradle.	'> EMERGENCY' shows.
	the pink indicator light goes off.
11.Through the aft attendant-station handsets and the cockpit boomset:	Through the aft attendant-station handsets and the cockpit boomset:
make an announcement.	you hear the announcement.
12.At the aft left attendant station:	On the aft left AIP:
put the handset back in the cradle.	'> EMERGENCY' goes off.
13.Through the aft right attendant-station handset and the cockpit boomset:	Through the aft right attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
14.At the aft right attendant station:	On the aft right AIP:
put the handset back in the cradle.	'> EMERGENCY' goes off.

	On all ACPs:
	the pink indicator lights go off.
15.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the RAD/INT switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-052-I ** ON A/C NOT FOR ALL

A. Do the test of the EMERGENCY call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	In the cockpit, on the overhead panel 21VU:
push the EMER pushbutton switch.	the CALL ON indicator light in the EMER pushbutton switch flashes.

	In the cabin and at all attendant stations:
	you hear a HI-LO chime three times.

	On all Area Call Panels (ACP) 340RH:
	the pink indicator lights flash.

	On all Attendant Indication Panels (AIP) 320RH:
	the pink indicator light flashes.
	'EMERGENCY CALL' flashes.

	In the cockpit, on the audio control panel:
	the ATT indication flashes.
2.In the cockpit, on the audio control panel:	In the cockpit, on the overhead panel 21VU:
push the RESET button.	the CALL ON indicator light in the EMER pushbutton switch goes off.

	In the cockpit, on the audio control panel:
	the ATT indication goes off.
3.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
4.At all attendant stations:
lift the handset from the cradle.

Through all attendant station handsets and the cockpit boomset:	Through all attendant station handsets and the cockpit boomset:
make an announcement.	you hear the announcement.

	On all ACPs:
	the pink indicator lights go off.
5.At all attendant stations:	On all AIPs:
put the handset back in the cradle.	the pink indicator light goes off.
	'EMERGENCY CALL' goes off.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-074-D ** ON A/C NOT FOR ALL

B. Do the test of the FWD attendant call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	On the FWD LH ACP 340RH:
push the FWD pushbutton.	the pink lights come on.
	On the FWD AIP 320RH:
	the pink light comes on.
	the CALL CAPTAIN message comes on.
	From all attendant loudspeakers:
	a single HI-LO chime sounds.
2.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
3.At the FWD attendant station:	On the FWD ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the FWD AIP 320RH:
	the pink light goes off.
	the CALL CAPTAIN message changes to CAPTAIN.
	In the cockpit and at the FWD attendant station:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
	On the FWD AIP 320RH:
put the handset back on the cradle.	the CAPTAIN message goes off.
4.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the CAB rotary-knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton-switch integral light goes off.

Subtask 23-73-00-710-075-C ** ON A/C NOT FOR ALL

C. Do the test of the AFT attendant call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	On the aft Area Call Panels (ACP) 340RH:
push the AFT pushbutton.	the pink indicator lights come on.
	On the aft Attendant Indication Panels (AIP) 320RH:
	the green indicator light comes on.
	the message CALL CAPTAIN shows.
	At all attendant stations:
	you hear a single HI-LO chime.
2.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
3.At the aft LH attendant station:	On the aft ACPs:
lift the handset from the cradle.	the pink indicator lights go off.
	On the aft AIPs:
	the green indicator light goes off.
	On the aft LH AIP:
	the message CALL CAPTAIN changes to CAPTAIN.
	Through the aft LH attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
4.At the aft RH attendant station:	On the aft RH AIP:
lift the handset from the cradle.	the message CALL CAPTAIN changes to CAPTAIN.
	Through the aft attendant-station handsets and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the aft attendant stations:	On the aft AIPs:
put the handset back in the cradle.	the message CAPTAIN goes off.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-074-S ** ON A/C NOT FOR ALL

D. Do the test of the FWD attendant call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	At all attendant stations:
push the FWD pushbutton switch.	you hear a HI-LO chime.
	On the forward Attendant Indication Panel (AIP):
	the message CALL CAPTAIN comes on.
	the green indicator comes on.
	On the forward left Area Call Panel (ACP):
	the pink indicators come on.
2.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
3.At the forward attendant station:	On the forward AIP:
lift the handset from the cradle.	the message > CAPTAIN comes on.
	the green indicator goes off.
	On the forward left ACP:
	the pink indicators go off.
4.On the audio control panel in the cockpit:
push and hold the RAD/INT switch in the RAD position.
5.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
6.At the forward attendant station:	On the forward AIP:
put the handset back in the cradle.	the message > CAPTAIN goes off.
7.On the audio control panel in the cockpit: release the RAD/INT switch.
On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-075-Q ** ON A/C NOT FOR ALL

E. Do the test of the AFT attendant call from the cockpit.

ACTION	RESULT
1.In the cockpit, on the overhead panel 21VU:	At all attendant stations:
push the AFT pushbutton.	you hear a HI-LO chime.

	On the aft Attendant Indication Panels (AIP) 320RH:
	'CALL CAPTAIN' shows.
	the green indicator light comes on.

	On the aft Area Call Panels (ACP) 340RH:
	the pink indicator lights come on.
2.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the RAD/INT switch in the RAD position.
3.At the aft left attendant station:	On the aft right AIP:
lift the handset from the cradle.	'CALL CAPTAIN' goes off.
	the green indicator light goes off.

	On the aft left AIP:
	'> CAPTAIN' shows.
	the green indicator light goes off.

	On the aft ACPs:
	the pink indicator lights go off.
4.Through the aft left attendant-station handset and the cockpit boomset:	Through the aft left attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the aft left attendant station:	On the aft left AIP:
put the handset back in the cradle.	'> CAPTAIN' goes off.
6.In the cockpit, on the audio control panel:
release the RAD/INT switch.
7.In the cockpit, on the overhead panel 21VU:	At all attendant stations:
push the AFT pushbutton.	you hear a HI-LO chime.

	On the aft AIPs:
	'CALL CAPTAIN' shows.
	the green indicator light comes on.

	On the aft ACPs:
	the pink indicator lights come on.
8.At the aft right attendant station:	On the aft left AIP:
lift the handset from the cradle.	'CALL CAPTAIN' goes off.
	the green indicator light goes off.

	On the aft right AIP:
	'> CAPTAIN' shows.
	the green indicator light goes off.

	On the aft ACPs:
	the pink indicator lights go off.
9.In the cockpit, on the audio control panel.
hold the RAD/INT switch in the RAD position.
10.Through the aft right attendant-station handset and the cockpit boomset:	Through the aft right attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
11.At the aft right attendant station:	On the aft right AIP:
put the handset back in the cradle.	'> CAPTAIN' goes off.
12.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the RAD/INT switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-076-B ** ON A/C NOT FOR ALL

F. Do the test of the EMERGENCY call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward LH Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	one number symbol shows.
2.On the forward attendant station handset:	On the forward LH AIP:
push the EMER CALL pushbutton.	the number symbol goes off.
	the message EMERGENCY CALL flashes.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch flashes.
	In the cockpit, on the audio control panel:
	the ATT indication flashes.
	In the cockpit:
	the crew call buzzer operates three times.
3.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the RESET pushbutton.	the ATT indication goes off.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch goes off.
	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
4.Through the forward attendant station handset and the cockpit boomset:	Through the forward attendant station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the forward attendant station:	On the forward LH AIP:
put the handset back in the cradle.	the message EMERGENCY CALL goes off.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-077-B ** ON A/C NOT FOR ALL

G. Do the test of the EMERGENCY call from the aft left attendant station.

The procedure for this test is the same as the procedure for the test of the EMERGENCY call from the forward left attendant station.

Subtask 23-73-00-710-076-E ** ON A/C NOT FOR ALL

H. Do the test of the EMERGENCY call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward left Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	one number symbol flashes.
	Through the forward attendant-station handset:
	you hear the dial tone.
2.On the forward attendant station handset:	On the forward left AIP:
push the EMER CALL pushbutton.	the number symbol goes off.
	the message EMER CALL flashes.
	Through the forward attendant-station handset:
	the dial tone stops.
	you hear the call tone.
	In the cockpit:
	the crew call buzzer operates three times.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch flashes.
	In the cockpit, on the audio control panel:
	the ATT indication flashes.
3.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the RESET pushbutton.	the ATT indication goes off.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch goes off.
4.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
5.In the cockpit, on the audio control panel:	On the forward left AIP:
push and hold the RAD/INT switch to the RAD position.	the message > EMER CALL shows.
	Through the forward attendant-station handset:
	the call tone stops.
6.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
7.At the forward attendant station:	On the forward left AIP:
put the handset back in the cradle.	the message > EMER CALL goes off.
8.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-077-D ** ON A/C NOT FOR ALL

I. Do the test of the EMERGENCY call from the aft left and aft right attendant station.

The procedure for this test is the same as the procedure for the test of the EMERGENCY call from the forward left attendant station.

Subtask 23-73-00-710-159-C ** ON A/C NOT FOR ALL

J. Do the test of the ALL CALL from the forward attendant station.

ACTION	RESULT
1.At the FWD attendant station:	On the FWD AIP 320RH:
lift the handset from the cradle.	a number symbol comes on.
2.On the handset:
push the ALL ATTND pushbutton switch.	the ALL message comes on.
	On the AFT ACPs 340RH:
	the pink lights come on.
	On the AFT AIPs 320RH:
	the pink light comes on.
	the CONFERENCE CALL message comes on.
	From all attendant loudspeakers:
	a single HI-LO chime sounds.
3.At the AFT attendant stations:	On the AFT ACPs 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the AFT AIPs 320RH:
	the pink light goes off.
	On the FWD AIP 340RH:
	the number symbol goes off.
	At the FWD and AFT attendant stations:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
4.At all attendant stations:	On the FWD AIP 320RH:
put the handset back to the cradle.	the ALL message goes off.
	On the AFT AIPs 320RH:
	the CONFERENCE CALL message goes off.

Subtask 23-73-00-710-159-AQ ** ON A/C NOT FOR ALL

J. Do the test of the ALL call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward LH Attendant Indication Panel (AIP) 320RH:
Lift the handset from the cradle.	The number symbol flashes.
	Through the forward attendant station handset 330RH:
	You hear the dial tone.
2.On the forward attendant station handset:	On the forward LH AIP:
Push the ALL ATTND pushbutton.	The number symbol goes off.
	The message ALL ATTND comes on.
	On the aft AIPs:
	The message CALL ALL ATTND comes on.
	The green indicator comes on.
	On the forward LH and aft LH/RH Area Call Panel (ACP) 340RH:
	The green indicator comes on.
	At all attendant stations:
	You hear a single HI-LO chime.
	Through the forward attendant station handset:
	The dial tone stops.
	The call tone starts.
3.At the aft attendant stations:	On all AIPs:
Lift the handset from the cradle.	The message > ALL ATTND comes on.
	On the aft AIPs:
	The green indicator goes off.
	On the forward LH and aft LH/RH ACP:
	The green indicator goes off.
	Through the forward attendant station handset:
	The call tone stops.
4.Through the forward and aft attendant station handsets:	Through the forward and aft attendant station handsets:
Make an announcement.	You hear the announcement.
5.At all attendant stations:	On all AIPs:
Put the handset back in the cradle.	The message > ALL ATTND goes off.

Subtask 23-73-00-710-078-C ** ON A/C NOT FOR ALL

K. Do the test of the ALL attendant call from the aft attendant stations.

The procedure for this test is the same as the procedure for the test of the all attendant call from the forward left attendant station.

Subtask 23-73-00-710-079-B ** ON A/C NOT FOR ALL

L. Do the test of the COCKPIT call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward LH Attendant Indication Panel (AIP) 320RH:
Lift the handset from the cradle.	One number symbol comes on.
2.On the forward attendant station handset:
Push the CAPT pushbutton.	The message "# CAPTAIN" comes on.
	Through the cockpit loudspeakers:
	The crew call buzzer operates one time.
	In the cockpit, on the audio control panel:
	The ATT indication flashes.
3.In the cockpit, on the audio control panel:
Push the RESET pushbutton.	The ATT indication goes off.
	In the cockpit, on the audio control panel:
Push the CAB pushbutton switch.	The integral light of the CAB pushbutton switch comes on.
Push the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully cw.
	On the forward LH AIP:
Push and hold the INT/RAD switch to the RAD position.	The number symbol goes off.
4.Through the forward attendant station handset and the cockpit boomset:	Through the forward attendant station handset and the cockpit boomset:
Make an announcement.	You hear the announcement.
5.At the forward attendant station:	On the forward LH AIP:
Put the handset back in the cradle.	The message "CAPTAIN" goes off.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
Release the INT/RAD switch.
Push to release the CAB pushbutton switch.	The integral light of the CAB pushbutton switch goes off.
Push to release the CAB rotary knob and turn ccw.	The integral light of the CAB rotary knob goes off.

Subtask 23-73-00-710-079-D ** ON A/C NOT FOR ALL

L. Do the test of the COCKPIT call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward left Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	one number symbol flashes.
	Through the forward attendant-station handset:
	you hear the dial tone.
2.On the forward attendant-station handset:	On the forward left AIP:
push the CAPT pushbutton.	the number symbol goes off.
	the message CAPTAIN shows.
	Through the forward attendant-station handset:
	the dial tone stops.
	the call tone starts.
	Through the cockpit loudspeakers:
	the crew call buzzer operates one time.
	In the cockpit, on the audio control panel:
	the ATT indication flashes.
3.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the RESET pushbutton.	the ATT indication goes off.
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the RAD/INT switch in the RAD position.	On the forward left AIP:
	the message > CAPTAIN shows.
	Through the forward attendant-station handset:
	the call tone stops.
4.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the forward attendant station:	On the forward left AIP:
put the handset back in the cradle.	the message > CAPTAIN goes off.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-161-C ** ON A/C NOT FOR ALL

M. Do the test of the COCKPIT call from the aft attendant stations.

The procedure for this test is the same as the procedure for the test of the COCKPIT call from the forward attendant station.

Subtask 23-73-00-710-081-C ** ON A/C NOT FOR ALL

N. Do the test of the AFT ATTND call from the forward attendant station.

ACTION	RESULT
1.At the FWD attendant station:	On the FWD AIP 320RH:
lift the handset from the cradle.	the number symbol comes on.
2.On the handset:
push the AFT L ATTND pushbutton switch.	the AFT L message comes on.
	On the AFT LH AIP 320RH:
	the pink light comes on.
	the CALL FWD L message comes on.
	On the AFT LH ACP 340RH:
	the pink lights come on.
	At all attendant stations:
	a single HI-LO chime sounds.
3.At the AFT LH attendant station:	On the AFT LH ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the AFT LH AIP 320RH:
	the pink light goes off.
	the CALL FWD L message changes to FWD L.
	On the FWD AIP 320RH:
	the number symbol goes off.
	At the FWD and AFT LH attendant stations:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
4.At the FWD and AFT LH attendant station:	At the FWD AIP 320RH:
put the handsets back to the cradle.	the AFT L message goes off.
	At the AFT LH AIP 320RH: the FWD L message goes off.

Subtask 23-73-00-710-081-AE ** ON A/C NOT FOR ALL

N. Do the test of the AFT ATTND call from the forward attendant station.

ACTION	RESULT
1.At the forward attendant station:	On the forward LH Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	'#' shows.
2.On the forward attendant station handset:
push the AFT L ATTND pushbutton.
	On the forward LH AIP:
	'#' goes off.
	'AFT ATTND L' shows.

	On the aft LH AIP:
	the green indicator light comes on.
	'CALL FWD L ATTND' shows.

	On the aft LH Area Call Panel (ACP) 340RH:
	the green indicator light comes on.

	At all attendant stations:
	you hear a single HI-LO chime.
3.At the aft LH attendant station:	On the aft LH ACP:
lift the handset from the cradle.	the green indicator light goes off.

	On the aft LH AIP:
	the green indicator light goes off.
	'CALL FWD L ATTND' changes to '> FWD L ATTND'.

	On the aft RH AIP:
	the green indicator light goes off.
	'CALL FWD L ATTND' goes off.

	On the forward LH AIP:
	'AFT ATTND L' changes to '> AFT ATTND L'.

	Through the forward and aft LH attendant station handset:
make an announcement.	you hear the announcement.
4.At the forward and aft LH attendant station:	On the forward LH AIP:
put the handset back in the cradle.	'> AFT ATTND L' goes off.

	On the aft LH AIP:
	'> FWD L ATTND' goes off.

Subtask 23-73-00-710-084-D ** ON A/C NOT FOR ALL

O. Do the test of the forward left, aft left and aft right attendant call from the forward and aft attendant stations.

The procedure for this test is the same as the procedure for the test of the aft left attendant call from the forward attendant station.

Subtask 23-73-00-710-162-I ** ON A/C NOT FOR ALL

P. Do the test of the priority function of the EMERGENCY call from the cockpit.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the AFT LH attendant station:	At the AFT LH AIP 320RH:
lift the handset from the cradle.	the number symbol comes on.
2.On the handset:
push the FWD ATTND pushbutton switch.	the FWD L message comes on.
	At the FWD AIP 320RH:
	the pink light comes on.
	the CALL AFT L message comes on.
	On the FWD LH ACP 340RH:
	the pink lights come on.
	At all attendant stations:
	a single HI-LO chime sounds.
3.At the FWD attendant station:	On the FWD ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	At the FWD AIP 320RH:
	the pink light goes off.
	the CALL AFT L message changes to AFT L.
	On the AFT LH AIP 320RH:
	the number symbol goes off.
	At the FWD and AFT LH attendant stations:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
4.On the overhead panel 21VU:	On the overhead panel 21VU:
push the EMER CALL ON pushbutton switch.	the CALL ON indicator light in the EMER pushbutton switch flashes.
	On all AIPs 320RH:
	the EMERGENCY CALL message flashes.
	the pink lights flash.
	On all ACPs 340RH:
	the pink lights flash.
	From all attendant and Pax loudspeakers:
	a HI-LO chime sounds three times.
5.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
	In the cockpit and at the FWD and AFT LH attendant stations:
speak into the boomset microphone and listen for the reply.	the message and the reply are correct and clear.
6.At the FWD attendant station:	On the FWD AIP 320RH:
put the handset back to the cradle.	the pink light goes off.
	the EMERGENCY CALL message goes off.
	On the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch goes off.
7.At the AFT LH attendant station:	On the two AFT AIPs 320RH:
put the handset back to the cradle.	the pink light goes off.
	the EMERGENCY CALL message goes off.
	On all ACPs 340RH:
	the pink lights go off.
8.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the CAB rotary-knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton-switch integral light goes off.

Subtask 23-73-00-710-163-C ** ON A/C NOT FOR ALL

Q. Do the test of the priority function of the attendant call from the cockpit.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the AFT LH attendant station:	On the AFT LH AIP 320RH:
lift the handset from the cradle.	the number symbol comes on.
2.On the handset:
push the FWD ATTND pushbutton switch.	the FWD L message comes on.
	On the FWD AIP 320RH:
	the pink light comes on.
	the CALL AFT L message comes on.
	On the FWD LH ACP 340RH:
	the pink lights come on.
	At all attendant stations:
	a single HI-LO chime sounds.
3.At the FWD attendant station:	On the FWD LH ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the FWD AIP 320RH:
	the pink light goes off.
	the CALL AFT L message changes to AFT L.
	On the AFT LH AIP 320RH:
	the number symbol goes off.
	At the FWD and AFT LH attendant station:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
4.On the overhead panel 21VU:	On the AFT LH AIP 320RH:
push the CALLS AFT pushbutton switch.	the OVER CAPTAIN message comes on.
	On the AFT RH AIP 320RH:
	the CALL CAPTAIN message comes on.
	On the FWD AIP 320RH:
	the AFT L message changes to CNCL AFT L.
	At all attendant stations:
	a single HI-LO chime sounds.
5.At the FWD and AFT LH attendant station:	At the FWD and AFT LH attendant stations:
speak into the handset and listen for the reply.	the conversation stops.
6.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
7.In the cockpit:	In the cockpit and at the AFT LH attendant station:
speak into the boomset microphone and listen for the reply.	the message and the reply are correct and clear.
8.At the FWD attendant station:	On the FWD AIP 320RH:
put the handset back to the cradle.	the CNCL AFT L message goes off.
9.At the AFT LH attendant station:	On the AFT LH AIP 320RH:
put the handset back to the cradle.	the OVER CAPTAIN message goes off.
	On the AFT RH AIP 320RH:
	the CALL CAPTAIN message goes off.
10.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD pushbutton.
push to release the CAB rotary knob.	the CAB rotary-knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton-switch integral light goes off.

Subtask 23-73-00-710-088-C ** ON A/C NOT FOR ALL

R. 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.In the cockpit, on the overhead panel 21VU:	On the forward left Area Call Panel (ACP) 340RH:
push the CALLS FWD pushbutton switch.	the pink lights come on.
	On the forward Attendant Indication Panel (AIP) 320RH:
	the pink light comes on.
	the CALL CAPTAIN message comes on.
	At all attendant stations:
	you hear a HI-LO chime.
2.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD pushbutton switch to the RAD position.
3.At the forward attendant station:	On the forward left ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the forward AIP 320RH:
	the pink light goes off.
	the CALL CAPTAIN message changes to CAPTAIN.
4.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the aft left attendant station:	On the aft left AIP 320RH:
lift the handset from the cradle.	the number symbol comes on.
6.On the handset:	On the aft left AIP 320RH:
push the EMER CALL pushbutton switch.	the number symbol goes off.
	the message EMERGENCY CALL flashes.
	On the forward AIP 320RH:
	the message CAPTAIN goes off.
	the message EMERGENCY CALL flashes.
	On the overhead panel 21VU:
	the CALL ON indicator light in the EMER pushbutton switch flashes.
	In the cockpit, on the audio control panel:
	the ATT indication comes on.
	In the cockpit:
	the crew call buzzer operates three times.
7.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you do not hear the announcement.
8.Through the aft left attendant-station handset and the cockpit boomset:	Through the aft left attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
9.In the cockpit, on the audio control panel:	In the cockpit, on the overhead panel 21VU:
push the RESET pushbutton.	the CALL ON indicator light in the EMER pushbutton switch goes off.
	In the cockpit, on the audio control panel:
	the ATT indication goes off.
10.At the forward attendant station:	At the forward AIP 320RH:
put the handset back to the cradle.	the message EMERGENCY CALL goes off.
11.At the aft left attendant station:	At the aft left AIP 320RH:
put the handset back to the cradle.	the EMERGENCY CALL message goes off.
12.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the CAB rotary-knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton-switch integral light goes off.

Subtask 23-73-00-710-162-AR ** ON A/C NOT FOR ALL

S. Do the test of the priority function of the EMERGENCY call from the cockpit.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the aft LH attendant station:	On the aft LH Attendant Indication Panel (AIP) 320RH:
Lift the handset from the cradle.	The number symbol shows.
	Through the handset at the aft left attendant station:
	You hear a dial tone.
2.On the handset at the aft left attendant station:	On the aft left AIP:
Push the FWD ATTND pushbutton.	The number symbol goes off. 'FWD ATTND L' shows.
	On the forward left AIP: 'CALL AFT L ATTND' shows. The green indicator light comes on.
	On the forward left Area Call Panel (ACP) 340RH: The green indicator light comes on.
	At all attendant stations: You hear a HI-LO chime.
3.At the forward attendant station:	On the aft left AIP:
Lift the handset from the cradle.	'> FWD ATTND L' shows.
	On the forward left AIP: '> AFT L ATTND' shows. the green indicator light goes off.
	On the forward left ACP: The green indicator light goes off.
Through the handsets at the aft left and the forward attendant stations:	Through the handsets at the aft left and the forward attendant stations:
Make an announcement.	You hear the announcement.
4.In the cockpit, on the overhead panel 21VU:	In the cockpit, on the overhead panel 21VU:
Push the EMER pushbutton switch.	The CALL ON indicator light in the EMER pushbutton switch flashes.
	In the cabin, in all lavatories and at all attendant stations: You hear a HI-LO chime three times.
	On all ACPs: the pink indicator lights flash.
	On all AIPs: '> EMERGENCY' flashes. The pink indicator light flashes.
	In the cockpit, on the audio control panel:
	The ATT indication flashes.
5.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the RAD/INT switch in the RAD position.
6.Through the handsets at the aft left and the forward attendant stations and the cockpit boomset:	Through the handsets at the aft left and the forward attendant stations and the cockpit boomset:
Make an announcement.	You hear the announcement.
7.At the aft left and forward attendant stations:	On all AIPs:
Put the handset back in the cradle.	'> EMERGENCY' goes off. The pink indicator light goes off.
	On all ACPs: The pink indicator lights go off.
	In the cockpit, on the overhead panel 21VU: The CALL ON indicator light in the EMER pushbutton switch goes off.
8.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
Release the RAD/INT switch.
Push to release the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Push to release the CAB pushbutton switch.	The integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-163-AK ** ON A/C NOT FOR ALL

T. Do the test of the priority function of the attendant call from the cockpit.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the aft LH attendant station:	On the aft LH Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	'#' shows.

	Through the aft LH attendant station handset:
	you hear a dial tone.
2.On the aft LH attendant station handset:	On the aft LH AIP:
push the FWD ATTND pushbutton.	'#' goes off.
	'FWD ATTND L' shows.

	On the forward LH AIP:
	'CALL AFT L ATTND' shows.
	the green indicator light comes on.

	On the forward LH Area Call Panel (ACP) 340RH:
	the green indicator light comes on.

	At all attendant stations:
	you hear a single HI-LO chime.
3.At the forward attendant station:	On the aft LH AIP:
lift the handset from the cradle.	'> FWD ATTND L' shows.

	On the forward LH AIP:
	'> AFT L ATTND' shows.
	the green indicator light goes off.

	On the forward LH ACP:
	the green indicator light goes off.
4.Through the aft LH and forward attendant station handset:	Through the aft LH and forward attendant station handset:
make an announcement.	you hear the announcement.
5.In the cockpit, on the overhead panel 21VU:	On the aft LH AIP:
push the AFT pushbutton.	'> FWD ATTND L' goes off.
	'OVER CAPTAIN' shows.

	On the forward LH AIP:
	'> AFT L ATTND' goes off.
	'CNCL' shows.

	At all attendant stations:
	you hear a single HI-LO chime.
6.Through the aft LH and forward attendant station handset:	Through the aft LH and forward attendant station handset:
make an announcement.	you do not hear the announcement.
7.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the RAD/INT switch in the RAD position.
8.Through the aft LH attendant station handset and the cockpit boomset:	Through the aft LH attendant station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
9.At the forward attendant station:	On the forward LH AIP:
put the handset back in the cradle.	'CNCL' goes off.
10.At the aft LH attendant station:	On the aft LH AIP:
put the handset back in the cradle.	'OVER CAPTAIN' goes off.
11.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the RAD/INT switch.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to release the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-088-T ** ON A/C NOT FOR ALL

U. 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.In the cockpit, on the overhead panel 21VU:	At all attendant stations:
push the FWD pushbutton.	you hear a HI-LO chime.
	On the forward Attendant Indication Panel (AIP):
	the message CALL CAPTAIN comes on.
	the green indicator light comes on.
	On the forward left Area Call Panel (ACP):
	the pink indicator lights come on.
2.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push the ATT pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push to release the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD pushbutton switch in the RAD position.
3.At the forward attendant station:	On the forward AIP:
lift the handset from the cradle.	the message > CAPTAIN comes on.
	the green indicator light goes off.
	On the forward left ACP:
	the pink indicator lights go off.
4.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the aft left attendant station:	On the aft left AIP:
lift the handset from the cradle.	the number symbol flashes.
	Through the aft left attendant-station handset:
	you hear the dial tone.
6.On the aft left attendant-station handset:	On the aft left AIP:
push the EMER CALL pushbutton.	the number symbol goes off.
	the message EMER CALL flashes.
	On the forward AIP:
	the message CNCL CAPTAIN comes on.
	Through the forward attendant-station handset:
	you hear the busy tone.
	Through the aft left attendant-station handset:
	the dial tone stops.
	Through the cockpit loudspeakers:
	the BUZZER operates three times for approx. 1 sec.
	On the audio control panel in the cockpit:
	the ATT indication flashes.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light of the EMER pushbutton switch flashes.
7.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you do not hear the announcement.
8.Through the aft left attendant-station handset and the cockpit boomset:	Through the aft left attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
9.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push the RESET pushbutton.	the ATT indication goes off.
	In the cockpit, on the overhead panel 21VU:
	the CALL ON indicator light of the EMER pushbutton switch goes off.
10.At the forward and aft left attendant stations:	On the aft left AIP:
put the handsets back into their cradles.	the message EMER CALL goes off.
	On the forward AIP:
	the message CNCL CAPTAIN goes off.
11.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
release the RAD/INT switch.
push the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push the ATT pushbutton switch.	the integral light of the ATT pushbutton switch goes off.

Subtask 23-73-00-710-089-C ** ON A/C NOT FOR ALL

V. Do the test of the RESET on the cabin handset.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the FWD attendant station:	At the FWD AIP 320RH:
lift the handset from the cradle.	the number symbol comes on.
2.On the handset:
push the CAPT pushbutton switch.	the CAPTAIN message comes on.
	In the cockpit, on the audio control panel:
	the ATT indication comes on.
	In the cockpit:
	the crew call buzzer operates one time.
3.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the RESET pushbutton.	the ATT indication goes off.
	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
	On the FWD AIP 320RH:
push and hold the INT/RAD pushbutton switch to the RAD position.	the number symbol goes off.
4.In the cockpit:	At the FWD attendant station:
speak into the boomset microphone and listen for the reply.	the message and the reply are correct and clear.
5.On the FWD attendant station:	On the FWD AIP 320RH:
push the RESET pushbutton switch.	the CAPTAIN message goes off.
	the number symbol comes on.
6.In the cockpit:	In the cockpit and at the FWD attendant station:
speak into the boomset microphone and listen for the reply.	the conversation stops.
7.On the Capt audio seletor panel:	In the cockpit, on the audio control panel:
release the INT/RAD switch.
push to release the CAB rotary knob.	the CAB rotary-knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton-switch integral light goes off.
8.On the FWD attendant handset:	On the FWD AIP 320RH:
push the AFT L ATTND pushbutton switch.	the AFT L message comes on.
	On the AFT LH AIP 320RH:
	the pink light comes on.
	the CALL FWD L message comes on.
	On the AFT LH ACP 340RH:
	the pink lights come on.
	At all attendant stations:
	a single HI-LO chime sounds.
9.At the AFT LH attendant station:	On the AFT LH ACP 340RH:
lift the handset from the cradle.	the pink lights go off.
	On the AFT LH AIP 320RH:
	the pink light goes off.
	the CALL FWD L message changes to FWD L.
	On the FWD AIP 320RH:
	the number symbol goes off.
	At the FWD and AFT LH attendant stations:
speak into the handset and listen for the reply.	the message and the reply are correct and clear.
	On the AFT LH AIP 320RH:
put the handset back to the cradle.	the FWD L message goes off.
10.At the FWD attendant station:	On the FWD AIP 320RH:
put the handset back to the cradle.	the AFT L message goes off.

Subtask 23-73-00-710-089-AK ** ON A/C NOT FOR ALL

V. Do the test of the RESET on the cabin handsets.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the FWD ATTND station:	On the FWD AIP 320RH:
lift the handset from the cradle.	the number symbol flashes.
	Through the earphone of the handset at the FWD ATTND station:
	the dial tone is heard.
2.On the keyboard of the handset at the FWD ATTND station:	On the FWD AIP 320RH:
push the CAPT pushbutton.	the number symbol goes off.
	the message CAPTAIN comes on.
	Through the earphone of the handset at the FWD ATTND station:
	the dial tone stops.
	the call tone is heard.
	Through the loudspeakers in the cockpit:
	the BUZZER operates for approx. 1 sec.
	On the audio control panel in the cockpit:
	the ATT indication flashes.
3.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push the RESET pushbutton.	the ATT indication goes off.
push the CAB pushbutton switch.	the CAB pushbutton-switch integral light comes on.
push the CAB rotary knob.	the CAB rotary-knob integral light comes on.
turn the CAB rotary knob fully cw.
	On the FWD AIP 320RH:
push and hold the RAD/INT switch in the RAD position.	the message CAPTAIN comes on.
	Through the earphone of the handset at the FWD ATTND station:
	the call tone stops.
4.Through the handset at the FWD ATTND station and the cockpit boomset:	Through the handset at the FWD ATTND station and the cockpit boomset:
do an announcement.	the announcement is heard.
5.On the FWD ATTND station handset:	On the FWD AIP 320RH:
push the RESET pushbutton switch.	the message CAPTAIN goes off.
	the number symbol flashes.
6.Through the handset at the FWD ATTND station and the cockpit boomset:	Through the handset at the FWD ATTND station and the cockpit boomset:
do an announcement.	the announcement is not heard.
7.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
release the INT/RAD switch.
push to release the CAB rotary knob.	the CAB rotary knob integral light goes off.
push to release the CAB pushbutton switch.	the CAB pushbutton switch integral light goes off.
8.At the FWD ATTND station:	On the FWD AIP 320RH:
lift the handset from the cradle.	the number symbol flashes.
	Through the earphone of the handset at the FWD ATTND station:
	the dial tone is heard.
9.On the keyboard of the handset at the FWD ATTND station:	On the FWD AIP 320RH:
push the AFT L ATTND pushbutton.	the number symbol goes off.
	the message AFT ATTND comes on.
	Through the earphone of the handset at the FWD ATTND station:
	the dial tone stops.
	the call tone is heard.
	On the AFT LH AIP 320RH:
	the message CALL FWD L ATTND comes on.
	the green indicator comes on.
	At all ATTND stations:
	a single HI-LO chime is heard.
	On the AFT LH ACP 340RH:
	the green indicator comes on.
10.On the AFT LH ATTND station:	On the FWD AIP 320RH:
lift the handset from the cradle.	the message AFT ATTND comes on.
	On the AFT LH AIP 320RH:
	the message FWD L ATTND comes on.
	the green indicator goes off.
	On the AFT LH ACP 340RH:
	the green indicator goes off.
	Through the earphone of the handset at the FWD ATTND station:
	the call tone stops.
11.Through the handsets at the FWD and AFT LH ATTND station:	Through the handsets at the FWD and AFT LH ATTND station:
do an announcement.	the announcement is heard.
12.On the AFT LH ATTND station:	On the FWD AIP 320RH:
put the handset back into its cradle.	the number symbol flashes.
	On the AFT LH AIP 320RH:
	the message FWD L ATTND goes off.
	Through the earphone of the handset at the FWD ATTND station:
	the dial tone is heard.
13.On the FWD ATTND station:	On the FWD AIP 320RH:
put the handset back into its cradle.	the number symbol goes off.

Subtask 23-73-00-710-090-A ** ON A/C NOT FOR ALL

W. Do the test of the engage annunciation.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the forward attendant station:	On the forward LH Attendant Indication Panel (AIP) 320RH:
lift the handset from the cradle.	'#' shows.

On the forward attendant station handset:
push the CAPT pushbutton.	'CAPTAIN' shows.

	In the cockpit, on the audio control panel:
	the ATT indication flashes.

	In the cockpit:
	the crew call buzzer operates one time.
2.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
push the RESET pushbutton.	the ATT indication goes off.

	In the cockpit, on the audio control panel:
push the CAB pushbutton switch.	the integral light of the CAB pushbutton switch comes on.
push the CAB rotary knob.	the integral light of the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
push and hold the INT/RAD switch to the RAD position.
3.Through the forward attendant station handset and the cockpit boomset:	Through the forward attendant station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
4.At the aft LH attendant station:	On the aft LH AIP:
lift the handset from the cradle.	'#' shows.
5.On the aft LH attendant station handset:
push the FWD ATTND pushbutton.	'#' goes off.
	'BUSY FWD L' shows.
6.Through the forward attendant station handset and the cockpit boomset:	Through the forward attendant station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
7.At the aft LH attendant station:	On the aft LH AIP:
put the handset back in the cradle.	'BUSY FWD L' goes off.
8.At the forward attendant station:	On the forward LH AIP:
put the handset back in the cradle.	'CAPTAIN' goes off.
9.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
release the INT/RAD pushbutton switch.
push to reset the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
push to reset the CAB pushbutton switch.	the integral light of the CAB pushbutton switch goes off.

Subtask 23-73-00-710-090-I ** ON A/C NOT FOR ALL

W. Do the test of the engage annunciation.

NOTE: The test has the same procedure for all attendant stations.

ACTION	RESULT
1.At the forward attendant station:	On the forward Attendant Indication Panel (AIP):
lift the handset from the cradle.	the number symbol flashes.
	Through the forward attendant-station handset:
	you hear the dial tone.
2.On the forward attendant-station handset:	On the forward AIP:
push the CAPT pushbutton.	the number symbol goes off.
	the message CAPTAIN comes on.
	Through the forward attendant-station handset:
	the dial tone stops.
	the call tone starts.
	Through the cockpit loudspeakers:
	the BUZZER operates for approx. 1 sec.
	On the audio control panel in the cockpit:
	the ATT indication flashes.
3.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
push the RESET pushbutton.	the ATT indication goes off.
push the ATT pushbutton switch.	the integral light in the ATT pushbutton switch comes on.
push to release the CAB rotary knob.	the integral light in the CAB rotary knob comes on.
turn the CAB rotary knob fully cw.
	On the forward AIP:
push and hold the RAD/INT switch in the RAD position.	the message > CAPTAIN comes on.
	Through the forward attendant-station handset:
	the call tone stops.
4.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
5.At the aft left attendant station.	On the aft left AIP:
lift the handset from the cradle.	the number symbol flashes.
6.On the aft left attendant-station handset:
push the FWD ATTND pushbutton.	the number symbol goes off.
	the message BUSY FWD ATTND comes on.
7.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
make an announcement.	you hear the announcement.
8.At the aft left attendant station:	On the aft left AIP:
put the handset back in the cradle.	the message BUSY FWD ATTND goes off.
9.At the forward attendant station:	On the forward AIP:
put the handset back in the cradle.	the message > CAPTAIN goes off.
10.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
release the INT/RAD switch.
push the CAB rotary knob.	the integral light in the CAB rotary knob goes off.
push the ATT pushbutton switch.	the integral light in the ATT pushbutton switch goes off.

Subtask 23-73-00-710-347-B ** ON A/C NOT FOR ALL

X. Test of the EMERGENCY call from the cockpit.

ACTION	RESULT
1.On CALLS panel 21VU in the cockpit:	On CALLS panel 21VU in the cockpit:
Push and release the EMER pushbutton switch.	The CALL ON indicator light in the EMER pushbutton switch flashes.
	In the cabin and at all attendant stations:
	You hear three HI-LO chimes.
	On all Area Call Panels (ACP):
	The pink indicator lights flashes.
	On all Attendant Indication Panels (AIP):
	The message "CALL EMERGENCY" comes on.
	EMERGENCY flashes.
	The pink indicator lights flashes.
	In the cockpit, on the audio control panel:
	The ATT indication flashes.
2.On the audio control panel in the cockpit:	On CALLS panel 21VU in the cockpit:
Push and release the RESET pushbutton.	The CALL ON indicator light in the EMER pushbutton switch goes off.
	In the cockpit, on the audio control panel:
	The ATT indication goes off.
3.At the forward attendant station:	On the forward left AIP:
Lift the handset from the cradle.	> EMERGENCY flashes.
	The pink indicator light goes off.
4.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully clockwise.
Push and hold the INT/RAD switch in the RAD position.
5.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
Make an announcement.	You hear the announcement.
6.On the audio control panel in the cockpit:
Release the INT/RAD switch.
7.For all other attendant stations in the cabin, make sure that:
You can accept the call.
The indications on the related AIPs are the same as on the forward attendant station.
You hear the announcement from the cockpit and the other attendant stations.
The cockpit and the other attendant stations can hear the announcement from that attendant station.
8.At the related attendant station:	On the related AIP:
Lift the handset from the cradle.	> EMERGENCY flashes.
	The pink indicator light goes off.
9.In the cockpit, on the audio control panel:
Push and hold the INT/RAD switch in the RAD position.
10.Through the handsets at the forward attendant station and the related attendant station and the cockpit boomset:	Through the handsets at the forward attendant station and the related attendant station and the cockpit boomset:
Make an announcement.	You hear the announcement.
11.At the related attendant station:	On the related AIP:
Put the handset back into its cradle.	> EMERGENCY goes off.
12.In the cockpit, on the audio control panel:
Release the INT/RAD switch.
13.Repeat the steps 8 thru 12 for the next attendant station.
14.When you lift the handset from the cradle on the last attendant station in the cabin:	On all ACPs:
All attendant stations have accepted the call.	The pink indicator lights goes off.
15.At the forward attendant station:	On the forward AIP:
Put the handset back into its cradle.	> EMERGENCY goes off.
16.In the cockpit, on the audio control panel:	In the cockpit, on the audio control panel:
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Turn the CAB rotary knob fully counterclockwise.
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch goes off.

Subtask 23-73-00-710-348-E ** ON A/C NOT FOR ALL

Y. Test of the ALL Attendant Call from the Cockpit

ACTION	RESULT
1.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push to release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully cw.
2.On CALLS panel 21VU in the cockpit:	At all attendant stations:
Push the ALL pushbutton.	You hear a HI-LO chime.
	On the Area Call Panels (ACPs) in the forward left cabin area and in the aft cabin area:
	The pink indicator lights come on.
	On all Attendant Indication Panels (AIPs):
	The message 'CALL ALL ATTND' comes on.
	The green indicator lights come on.
3.At the forward attendant station:	On the forward AIP:
Lift the handset from the cradle.	The message '> ALL ATTND' comes on.
	The green indicator light goes off.
4.On the audio control panel in the cockpit:
Push and hold the INT/RAD switch in the RAD position.
5.Through the handset at the forward attendant-station and the cockpit boomset:	Through the handset at the forward attendant-station and the cockpit boomset:
Make an announcement.	You hear the announcement.
6.On the audio control panel in the cockpit:
Release the INT/RAD switch.
7.For all other attendant stations in the cabin, make sure that:
You can accept the call.
The indications on the related AIPs are the same as on the forward attendant- station.
You hear the announcement from the cockpit and the other attendant station.
The cockpit and the other attendant stations can hear the announcement from that attendant station.
A.At the related attendant station:	On the related AIP:
Lift the handset from the cradle.	The message '> ALL ATTND' comes on.
	The green indicator light goes off.
B.On the audio control panel in the cockpit:
Push and hold the INT/RAD switch in the RAD position.
C.Through the handsets at the forward attendant-station and the related attendant- station and the cockpit boomset:	Through the handsets at the forward attendant-station and the related attendant- station and the cockpit boomset:
Make an announcement.	You hear the announcement.
D.At the related attendant station:	On the related AIP:
Put the handset back into its cradle.	The message '> ALL ATTND' goes off.
E.On the audio control panel in the cockpit:
Release the INT/RAD switch.
F.Repeat the steps 7A thru 7E for the next attendant station.
G.When you lift the handset from the cradle on the last attendant station in the cabin:	On the ACPs in the forward left and aft cabin areas:
All attendant stations have accepted the call.	The pink indicator lights go off.
8.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Push the ATT pushbutton switch.	The integral light of the ATT pushbutton switch goes off.

Subtask 23-73-00-710-349-D ** ON A/C NOT FOR ALL

Z. Do the test of the ATTENDANT CALL from the cockpit.

ACTION	RESULT
1.On the CALLS panel 21VU in the cockpit:	At all attendant stations:
Push the FWD pushbutton switch.	You hear a single HI-LO chime.
	On the forward Attendant Indication Panel (AIP) 320RH:
	The message CALL CAPTAIN comes on.
	The green indicator light comes on.
	On the forward left Area Call Panel (ACP) 340RH:
	The pink indicator light comes on.
2.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push to release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully cw.
3.At the forward attendant station:	On the forward AIP:
Lift the handset from the cradle.	The message > CAPTAIN comes on.
	The green indicator light goes off.
	On the forward left ACP:
	The pink indicator light goes off.
4.On the audio control panel in the cockpit:
Push and hold the RAD/INT switch in the RAD position.
5.Through the handset at the forward attendant station and the cockpit boomset:	Through the handset at the forward attendant station and the cockpit boomset:
Make an announcement.	You hear the announcement.
6.At the forward attendant station:	On the forward AIP:
Put the handset back into its cradle.	The message > CAPTAIN goes off.
7.On the audio control panel in the cockpit:
Release the RAD/INT switch.
8.Repeat the steps 1 and 3 thru 7 for all other attendant stations.	The indications are the same as for the forward attendant station and the corresponding attendant station.
Use the AFT pushbutton to call each aft attendant station one after the other.
9.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:

Push the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Push the ATT pushbutton switch.	The integral light of the ATT pushbutton switch goes off.

Subtask 23-73-00-710-350-A ** ON A/C NOT FOR ALL

AA. Test of the EMERGENCY Call from all Attendant Stations.

ACTION	RESULT
1.At the forward attendant station:	On the forward left Attendant Indication Panel (AIP):
Lift the handset from the cradle.	The number symbol flashes.
	Through the forward attendant-station handset:
	You hear the dial tone.
2.On the keyboard of the forward attendant station-handset:	On the forward left AIP:
Push and release the EMER CALL pushbutton.	The number symbol goes off.
	The message "EMER CALL" flashes.
	Through the forward attendant-station handset:
	The dial tone stops.
	You hear the call tone.
	Through the loudspeakers in the cockpit:
	The BUZZER operates three times.
	On CALLS panel 21VU in the cockpit:
	The CALL ON indicator light in the EMER pushbutton switch flashes.
	On the audio control panel in the cockpit:
	The ATT indication flashes.
3.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push and release the RESET pushbutton.	The ATT indication goes off.
	On CALLS panel 21VU in the cockpit:
	The CALL ON indicator light in the EMER pushbutton switch goes off.
4.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully clockwise.
5.On the audio control panel in the cockpit:	On the forward left AIP:
Push and hold the RAD/INT switch in the RAD position.	The message "> EMER CALL" comes on.
	Through the forward attendant-station handset:
	The call tone stops.
6.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
Make an announcement.	You hear the announcement.
7.At the forward attendant station:	On the forward left AIP:
Put the handset back into its cradle.	The message "> EMER CALL" goes off.
8.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Release the INT/RAD switch.
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Turn the CAB rotary knob fully counterclockwise.
9.Repeat the steps 1 thru 8 for all other attendant station:	The indications are the same as for the EMERGENCY CALL from the forward attendant station.

Subtask 23-73-00-710-351-A ** ON A/C NOT FOR ALL

AB. Test of the CAPT CALL from all Attendant Stations.

ACTION	RESULT
1.At the forward attendant station:	On forward left Attendant Indication Panel (AIP):
Lift the handset from the cradle.	The number symbol flashes.
	Through forward attendant-station handset:
	You hear the dial tone.
2.On the keyboard of the handset at the forward attendant station:	On the forward left AIP:
Push and release the CAPT pushbutton.	The number symbol goes off.
	The message "CAPTAIN" comes on.
	Through the forward attendant-station handset:
	The dial tone stops.
	The call tone starts.
	Through the loudspeakers in the cockpit:
	The BUZZER operates for approx. 1 sec.
	On the audio control panel in the cockpit:
	The ATT indication flashes.
3.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push and release the RESET pushbutton.	The ATT indication goes off.
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully clockwise.
	On the forward left AIP:
Push and hold the RAD/INT switch to the RAD position.	The message "> CAPTAIN" comes on.
	Through the forward attendant-station handset:
	The call tone stops.
4.Through the forward attendant-station handset and the cockpit boomset:	Through the forward attendant-station handset and the cockpit boomset:
Make an announcement.	You hear the announcement.
5.At the forward attendant station:	On the forward left AIP:
Put the handset back into its cradle.	The message "> CAPTAIN" goes off.
6.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Release the INT/RAD switch.
Push and release the CAB rotary knob.	the integral light of the CAB rotary knob goes off.
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch goes off.
Turn the CAB rotary knob fully counterclockwise.
7.Repeat the steps 1 thru 6 for all other attendant stations (if applicable).	The indications are the same as for the CAPT CALL from the forward attendant station.

Subtask 23-73-00-710-352-J ** ON A/C NOT FOR ALL

AC. Do the test of the ATTENDANT CALL from the other attendant stations.

ACTION	RESULT
1.At the forward attendant station:	On the forward left Attendant Indication Panel (AIP) 320RH:
Lift the handset from the cradle.	The number symbol flashes.
2.On the forward attendant-station handset:	On the forward left AIP:
Push the AFT L ATTND pushbutton.	The number symbol goes off.
	The message AFT ATTND shows.
	On the aft left AIP:
	The green indicator light comes on.
	The message CALL FWD L ATTND shows.
	On the aft left Area Call Panel (ACP) 340RH:
	The green indicator light comes on.
	Through the loudspeakers at all attendant stations:
	You hear a HI-LO chime.
3.At the aft left attendant station:	On the aft left ACP:
Lift the handset from the cradle.	The pink indicator light goes off.
	On the aft left AIP:
	The green indicator light goes off.
	The message CALL FWD L ATTND changes to > FWD ATTND.
	On the forward left AIP:
	The message AFT ATTND changes to > AFT ATTND.
4.Through the handsets at the forward and aft left attendant-stations:	Through the handsets at the forward and aft left attendant-stations:
Make an announcement.	You hear the announcement.
5.At the aft left attendant station:	On the aft left AIP:
Put the handset back into its cradle.	The message > FWD ATTND goes off.
	On the forward left AIP:
	The message > AFT ATTND goes off.
	The number symbol flashes.
6.At the forward left attendant station:	On the forward left AIP:
Put the handset back into its cradle.	The number symbol goes off.
7.Repeat the steps 1 thru 6 for all other attendant stations:	The indications are the same as for the forward attendant station and the corresponding attendant station.
Use the FWD ATTND pushbutton to call the forward attendant station from the aft attendant stations.
Use the AFT L ATTND and AFT R ATTND pushbutton to call each aft attendant station one station after the other from the forward attendant station.

Subtask 23-73-00-710-353-A ** ON A/C NOT FOR ALL

AD. Test of the RESET on the Cabin Handsets.

ACTION	RESULT
1.At the forward attendant station:	On forward Attendant Indication Panel (AIP):
Lift the handset from the cradle.	The number symbol flashes.
	Through the earphone of the handset at the forward attendant station:
	You hear the dial tone.
2.On the keyboard of the handset at the forward attendant station:	On the forward AIP:
Push and release the CAPT pushbutton.	The number symbol goes off.
	The message "CAPTAIN" comes on.
	Through the earphone of the handset at the forward attendant station:
	The dial tone stops.
	You hear the call tone.
	Through the loudspeakers in the cockpit:
	The BUZZER operates for approx. 1 sec.
	On the audio control panel in the cockpit:
	The ATT indication flashes.
3.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Push and release the RESET pushbutton.	The ATT indication goes off.
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch comes on.
Push to release the CAB rotary knob.	The integral light of the CAB rotary knob comes on.
Turn the CAB rotary knob fully clockwise.
	On the forward left AIP:
Push and hold the RAD/INT switch in the RAD position.	The message "> CAPTAIN" comes on.
	Through the earphone of the handset at the forward attendant station:
	The call tone stops.
4.Through the handset at the forward attendant station and the cockpit boomset:	Through the handset at the forward attendant station and the cockpit boomset:
Make an announcement.	You hear the announcement.
5.On the handset at the forward attendant station:	On the forward AIP:
Push and release the RESET pushbutton.	The message "> CAPTAIN" goes off.
	RST flashes one time and goes off.
	The number symbol flashes.
6.Through the handset at the forward attendant station and the cockpit boomset:	Through the handset at the forward attendant station and the cockpit boomset:
Make an announcement.	You do not hear the announcement.
7.On the audio control panel in the cockpit:	On the audio control panel in the cockpit:
Release the INT/RAD switch.
Push and release the CAB rotary knob.	The integral light of the CAB rotary knob goes off.
Turn the CAB rotary knob fully counterclockwise.
Push and release the ATT pushbutton switch.	The integral light of the ATT pushbutton switch goes off.
8.On the forward attendant station:	On the forward AIP:
Put the handset back into its cradle.	The number symbol goes off.
9.Repeat the steps 1 thru 8 for all other attendant stations:	The results are the same as in steps 1 thru 8.

Subtask 23-73-00-710-354-M ** ON A/C NOT FOR ALL

AE. Do the test of the ALL attendant call from all attendant stations.

ACTION	RESULT
1.At the forward attendant station:	On the forward Attendant Indication Panel (AIP) 320RH:
Lift the handset from the cradle.	The number symbol flashes.
2.On the keyboard of the handset at the forward attendant-station:	On the forward left AIP:
Push the ALL ATTND pushbutton.	The number symbol goes off.
	The message ALL ATTND comes on.
	On the aft AIPs:
	The message CALL ALL ATTND comes on.
	The green indicator lights come on.
	On the Area Call Panels (ACPs) 340RH in the forward left and aft cabin areas:
	The green indicator lights come on.
	Through the loudspeakers at all attendant stations:
	You hear a HI-LO chime.
3.At the aft attendant stations:	On all AIPs 320RH:
Lift the handsets from the cradles.	The message > ALL ATTND comes on.
	On the aft AIPs 320RH:
	The green indicator lights go off.
	On the ACPs 340RH in the forward left and aft cabin areas:
	The green indicator lights go off.
4.Through the forward and aft attendant-station handsets:	Through the forward and aft attendant-station handsets:
Make an announcement.	You hear the announcement.
5.At the aft attendant stations:	On the aft AIPs 320RH:
Put the handsets back into their cradles.	The message > ALL ATTND goes off.
	On the forward left AIP:
	The number symbol flashes.
6.At the forward attendant station:	On the forward AIP:
Put the handset back into its cradle.	The number symbol goes off.

5. Close-up
Subtask 23-73-00-860-073-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.04.01 05:26:22 UTC