Installation of the Ballast Unit and Lampholder

TASK 33-24-11-400-006-A
Installation of the Ballast Unit and Lampholder

FIN: 10LQ1 ** ON A/C NOT FOR ALL
FIN: 10LQ10 ** ON A/C NOT FOR ALL
FIN: 10LQ13 ** ON A/C NOT FOR ALL
FIN: 10LQ4 ** ON A/C NOT FOR ALL
FIN: 10LQ5 ** ON A/C NOT FOR ALL
FIN: 10LQ6 ** ON A/C NOT FOR ALL
FIN: 10LQ9 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. 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)
Ballast Unit and Lampholder

3. Job Set-up
Subtask 33-24-11-865-087-A

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
2000VU	LIGHT-LAV	1LQ	J01

4. Procedure

WARNING: MAKE SURE THAT YOU INSTALL THE BALLAST UNIT AND THE WIRING CORRECTLY. THIS WILL PREVENT DAMAGE TO THE WIRING AND ALL DANGER OF ELECTRICAL SHOCK.

Subtask 33-24-11-420-060-A

A. Installation of the Ballast Unit with Lampholder and the Fluorescent Tube

Ballast Unit and Lampholder

(1) Install the ballast unit with lampholder (2):
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Install the ballast unit with lampholder (2) on the lavatory structure with the washers (8) and the screws (7).
(d) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(e) Cut and discard the ends of the electrical connections (1).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(f) Connect the electrical connectors (1).
(2) Install the fluorescent tube (4):
(a) Insert the fluorescent tube (4) between the slide-button (3) and the end of the ballast unit with lampholder (2).
(b) Install the fluorescent lamp cover (5).
(c) If installed, engage the quick release fasteners (6).

Subtask 33-24-11-861-056-A

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

Subtask 33-24-11-865-081-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
2000VU	LIGHT-LAV	1LQ	J01

Subtask 33-24-11-710-057-A ** ON A/C NOT FOR ALL

D. Operational Test
(1) Do the test of the ballast unit and the lampholder:
(a) On Flight Attendant Panel (FAP) 120RH, push the LIGHT MAIN ON/OFF pushbutton.
(b) On FAP 120RH, push the Lav Power/Lav Maint pushbutton.
(c) Make sure that the lavatory light comes on.

Subtask 33-24-11-710-057-B ** ON A/C NOT FOR ALL

D. Operational Test
(1) Do the test of the ballast unit and the lampholder:
(a) On Forward Attendant Panel (FAP) 120RH, push the membrane switch MAIN ON.
(b) On FAP 120RH, push the Lav Power/Lav Maint pushbutton.
(c) Make sure that the lavatory light comes on.

5. Close-up
Subtask 33-24-11-860-057-A

A. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) On FAP 120RH push the membrane switch MAIN OFF.

Subtask 33-24-11-862-056-A

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

[Rev.10 from 2021] 2026.04.01 00:53:36 UTC