Removal of the Ballast Unit, the Lampholder and the Fluorescent Tube

TASK 33-21-11-000-001-A
Removal of the Ballast Unit, the Lampholder and the Fluorescent Tube

CAUTION: DO NOT TOUCH THE LAMP GLASS WITH YOUR FINGERS. THE OILS FROM YOUR SKIN WILL QUICKLY CAUSE DETERIORATION OF THE LAMP. IF YOU ACCIDENTALLY TOUCH THE LAMP GLASS, CLEAN IT WITH A LINT-FREE CLOTH.

NOTE: The procedure is the same for all the passenger cabin lighting in Zone 200.

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	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	STEPLADDER 1.0 M (3.3 FT)

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 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-42-000-001-A	Removal of the Ceiling Panels - Forward Utility Area
TASK 25-23-42-000-002-A	Removal of the Ceiling Panels - Aft Utility Area
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel

3. Job Set-up
Subtask 33-21-11-861-053-A ** ON A/C NOT FOR ALL

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

Subtask 33-21-11-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	CAB LIGHT PWR-CEILING-AFT	307LG	H08
2000VU	CAB LIGHT PWR-CEILING-AFT	304LG	H07
2000VU	CAB LIGHT PWR-CEILING-FWD	306LG	H06
2000VU	CAB LIGHT PWR-CEILING-FWD	305LG	H05
2000VU	CAB LIGHT PWR-WINDOW-AFT	302LG	H04
2000VU	CAB LIGHT PWR-WINDOW-AFT	301LG	H03
2000VU	CAB LIGHT PWR-WINDOW-FWD	303LG	H02
2000VU	CAB LIGHT PWR-WINDOW-FWD	300LG	H01
2000VU	LIGHT-CABIN-ENTRY	308LG	J02

Subtask 33-21-11-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) For the ceiling ballast unit and lampholder:

Put the STEPLADDER 1.0 M (3.3 FT) below the related ceiling panel.
Remove the related ceiling panel (Ref. AMM TASK 25-23-41-000-001).

(2) For the window ballast unit and lampholder:

Remove the related cove light panel (Ref. AMM TASK 25-23-48-000-001).

(3) For the entrance ballast unit and lampholder:

Put the STEPLADDER 1.0 M (3.3 FT) below the related ceiling panel.
Remove the related ceiling panel (Ref. AMM TASK 25-23-42-000-001) (Ref. AMM TASK 25-23-42-000-002).

(4) Find the ballast unit and lampholder.

4. Procedure
Subtask 33-21-11-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Ballast Unit with Lampholder and the Tube
(1) Remove the tube (2)
(a) Push the buttons (1) at each end of the lampholder (6) and remove the fluorescent tube (2).
(b) Retain the tube (2).
(2) Remove the window ballast unit and lampholder (6)
(a) Disconnect the electrical connectors (3).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Remove the screws (5) and the washers (4).
(d) Remove the ballast unit and lampholder (6) from the airframe structure.
(3) Remove the ceiling and the entrance ballast unit and lampholder (6)
(a) Disconnect the electrical connectors (3).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Remove the screws (8) and the washers (7).
(d) Remove the ballast unit and lampholder (6) from the airframe structure.

Subtask 33-21-11-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Advanced Integrated Ballast-Unit (AIBU) with Lampholder
(1) Identify all electrical connectors (1) before you disconnect them.
(2) Disconnect the electrical connector (1).

NOTE: If necessary remove and discard the cable ties.

(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Hold the fluorescent tube (5) and push the buttons (2) at each end of the lampholder (7) to remove the fluorescent tube (5).
(5) Remove the screws (4) and the washers (3).
(6) If installed, remove the reflector (6).
(7) Remove the AIBU with lampholder (7).
(8) Remove the spacers (9):
(a) Make match marks on the components that you disconnect/remove to record their connections/positions. This is important for the subsequent installation procedure.
(b) Push the attachment clips (8) and remove the spacers (9) from the AIBU with lampholder (7).
(c) Keep the parts for the subsequent installation procedure.

[Rev.10 from 2021] 2026.04.01 00:53:16 UTC