Operational Test of the Emergency Lighting in the Cabin with the 'LIGHT EMER' Pushbutton Switch

TASK 33-51-00-710-007-A
Operational Test of the Emergency Lighting in the Cabin with the 'LIGHT EMER' Pushbutton Switch

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
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 33-51-00-00	CABIN EMERGENCY LIGHTING - DESCRIPTION AND OPERATION

3. Job Set-up

CAUTION: DO NOT USE THE TEACH-IN PROCEDURE TO CLEAR EPSU FAILURE MESSAGES. THE TEACH-IN PROCEDURE IS NOT A SYSTEM RESET. IT CAN CHANGE THE EMERGENCY LIGHT CONFIGURATION AND CAUSE HIDDEN FAILURES.

NOTE: The teach-in procedure of the EPSUs measures and keeps the load values that are related to each EPSU. The EPSU controller refers to these load values when the BITE test of the emergency lighting system operates. Thus, it is necessary that the emergency lights of the related EPSUs operate correctly during the teach-in procedure.

Subtask 33-51-00-861-059-A

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 33-51-00-865-058-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H06
49VU	LIGHTING/EMER LT/CABIN	1WL	H05
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H04
49VU	LIGHTING/EMER LT/CABIN	1WL	H03
** ON A/C ALL
122VU	LIGHTING/CABIN/EMER/LT	3WL	V07

Subtask 33-51-00-860-082-A ** ON A/C NOT FOR ALL

C. Preparation for Test
(1) On the overhead panel 25VU, make sure that the EMER EXIT LT switch 4WL is in the OFF position.
(2) On the overhead panel 25VU, make sure that the NO SMOKING switch 190RH is in the OFF position.
(3) On the Forward Attendant Panel (FAP) 120RH, make sure that the LIGHT EMER pushbutton switch and its integral light are off.

Subtask 33-51-00-860-082-D ** ON A/C NOT FOR ALL

C. Preparation for Test
(1) On the overhead panel 25VU, make sure that the EMER EXIT LT switch 4WL is in the OFF position.
(2) On the overhead panel 25VU, make sure that the NO SMOKING switch 190RH is in the OFF position.
(3) On the Flight Attendant Panel (FAP) 120RH, make sure that the EMER pushbutton switch is off and its internal light is dim.

Subtask 33-51-00-860-082-E ** ON A/C NOT FOR ALL

C. Preparation for Test
(1) On overhead panel 25VU, make sure that EMER EXIT LT switch 4WL is in the OFF position.
(2) On overhead panel 25VU, make sure that EXIT switch 190RH is in the OFF position.
(3) On Flight Attendant Panel (FAP) 120RH, make sure that the EMER pushbutton switch and its light are off.

Subtask 33-51-00-860-082-F ** ON A/C NOT FOR ALL

C. Preparation for Test
(1) On overhead panel 25VU, make sure that EMER EXIT LT switch 4WL is in the OFF position.
(2) On overhead panel 25VU, make sure that No PED switch 190RH is in the OFF position.
(3) On Flight Attendant Panel (FAP) 120RH, make sure that the EMER pushbutton switch and its integral light are off.

4. Procedure
Subtask 33-51-00-710-062-A ** ON A/C NOT FOR ALL

A. Test of the Emergency Lighting in the Cabin with the LIGHT EMER Pushbutton Switch
(1) For the locations of the emergency lights, refer to (Ref. AMM D/O 33-51-00-00).
(2) Do this test:

ACTION	RESULT
1.In the cabin, on the FAP 120RH: push the LIGHT EMER pushbutton switch.	In the cabin, on the FAP 120RH: the red integral light of the LIGHT EMER pushbutton switch comes on.
	In the cabin: the emergency lighting comes on.
2.In the cabin, on the FAP 120RH: push the LIGHT EMER pushbutton switch.	In the cabin, on the FAP 120RH: the red integral light of the LIGHT EMER pushbutton switch goes off.
	In the cabin: the emergency lighting goes off.

Subtask 33-51-00-710-062-C ** ON A/C NOT FOR ALL

A. Operational Test
(1) For the locations of the emergency lights, refer to (Ref. AMM D/O 33-51-00-00).
(2) Do this test of the emergency lighting in the cabin with the EMER pushbutton switch:

ACTION	RESULT
1.In the cabin, on FAP 120RH: Push the EMER pushbutton switch.	In the cabin, on FAP 120RH: The integral light of the EMER pushbutton switch comes on.
	In the cabin: The emergency lighting comes on.
2.In the cabin, on FAP 120RH: Push the EMER pushbutton switch.	In the cabin, on FAP 120RH: The red internal light of the EMER pushbutton switch becomes dim.
	In the cabin: The emergency lighting goes off.

5. Close-up
Subtask 33-51-00-862-058-A

A. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 03:56:38 UTC