Bite Test of the Cabin Attendant Work-Light through MCDU

TASK 33-27-00-740-001-A
Bite Test of the Cabin Attendant Work-Light through MCDU

1. Reason for the Job
To make sure that the cabin attendant work-lights operate correctly.
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 31-32-00-860-003-A	Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page

3. Job Set-up
Subtask 33-27-00-860-051-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page (Ref. AMM TASK 31-32-00-860-003).

Subtask 33-27-00-865-054-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
2000VU	LIGHT-ATTND-WORK	1LZ	J03

4. Procedure
Subtask 33-27-00-740-051-A ** ON A/C NOT FOR ALL

A. BITE Test of the Cabin Attendant Work-lights and Passenger Reading Lights on the Multipurpose Control and Display Unit (MCDU) 3CA
(1) Do this test.

ACTION	RESULT
1.On the FAP 120RH:	On the FAP 120RH:
Push the POWER READ and POWER ATTN membrane switches.	the POWER READ and POWER ATTN indication lights of the membrane switches come on.
2.On the MCDU:	On the MCDU screen:
Push the line key adjacent to the CIDS 1 indication.	The CIDS 1 main menu page comes on.
Push the TEST line select key.	The CIDS 1 TEST menu comes on.
Push the NEXT PAGE key until the READING/WORK LIGHTS display comes on.
Push the READING/WORK LIGHTS line select key.	The page RDG/WORK LIGHTS TEST comes on.
	The WAIT FOR RESPONSE display comes on and flashes.
	In the cabin:
	All the cabin attendant work-lights and passenger reading lights come on for approx. 3 s then go off.
	On the MCDU screen:
	The display RDG/WORK LIGHTS ATA 23-73-64 TEST OK comes on.
3.On the MCDU:	On the MCDU screen:
Push the MCDU MENU key.	The MCDU menu comes on.
4.On the FAP 120RH:	On the FAP 120RH:
Push the POWER READ and POWER ATTN membrane switches.	The POWER READ and POWER ATTN indication lights of the membrane switches go off.

Subtask 33-27-00-740-051-C ** ON A/C NOT FOR ALL

A. BITE-test of the Cabin Attendant Work-lights and Passenger Reading Lights on Multipurpose Control and Display Unit (MCDU) 3CA
(1) Do this test:

ACTION	RESULT
1.On the MCDU:	On the MCDU screen:
Push the line select key adjacent to the CIDS 1 indication.	The CIDS main menu page comes on.
Push the line select key adjacent to the SYSTEM TESTS > indication.	The SYSTEM/TESTS menu page comes on.
Push the line select key adjacent to the < ILLUMINATION TEST indication.	The ILLUMINATION TEST menu page comes on.
Push the line select key adjacent to the < START TEST indication.	The display TEST IN PROGRESS 5s comes on.
	In the cabin: All the passenger reading lights come on for approx. 5s.
	On the MCDU screen: The display TEST OK comes on.
Push the line select key adjacent to the RETURN indication.	The CIDS main menu page comes on.

5. Close-up
Subtask 33-27-00-862-051-A

A. Put the aircraft back to the serviceable condition.
(1) On the MCDU, set the BRT knob to the OFF position.
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 12:33:08 UTC