Removal of the Ballast Unit and the Lampholder

TASK 33-34-11-000-001-A
Removal of the Ballast Unit and the Lampholder

WARNING: ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE ENVIRONMENT.

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 fluorescent lighting in the fwd and aft cargo compartment.

ZONE: 130
ZONE: 150
FIN: 13LU
FIN: 14LU ** ON A/C NOT FOR ALL
FIN: 15LU
FIN: 16LU
FIN: 17LU
FIN: 20LU ** ON A/C NOT FOR ALL
FIN: 21LU ** ON A/C NOT FOR ALL
FIN: 22LU ** 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	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
FOR [13LU] (C/C LIGHT)
131AC
825
FOR [13LU] (C/C LIGHT)
FOR [14LU] (C/C LIGHT)
825
FOR [13LU] (C/C LIGHT)
FOR [14LU] (C/C LIGHT)
FOR [20LU] (C/C LIGHT)
FOR [21LU] (C/C LIGHT)
825
FOR [14LU] (C/C LIGHT)
131BC
FOR [15LU] (C/C LIGHT)
151BC
FOR [15LU] (C/C LIGHT)
FOR [16LU] (C/C LIGHT)
FOR [17LU] (C/C LIGHT)
826
FOR [15LU] (C/C LIGHT)
FOR [16LU] (C/C LIGHT)
FOR [17LU] (C/C LIGHT)
FOR [22LU] (C/C LIGHT)
826
FOR [16LU] (C/C LIGHT)
151CC
FOR [17LU] (C/C LIGHT)
161AC
FOR [20LU] (C/C LIGHT)
131CC
FOR [21LU] (C/C LIGHT)
131DC
FOR [22LU] (C/C LIGHT)
151AC

C. 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 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Ballast Unit with Lampholder ** ON A/C NOT FOR ALL
Ballast Unit with Lampholder ** ON A/C NOT FOR ALL
Ballast Unit with Lampholder ** ON A/C NOT FOR ALL
Ballast Unit with Lampholder ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 33-34-11-861-050-A

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

Subtask 33-34-11-865-058-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
2000VU	LIGHT-CARGO COMPT-AFT	2LU	J07
2000VU	LIGHT-CARGO COMPT-FWD	1LU	J06

Subtask 33-34-11-010-050-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) FOR [13LU] (C/C LIGHT), [14LU] (C/C LIGHT), [20LU] (C/C LIGHT), [21LU] (C/C LIGHT)
at FWD cargo-compartment door 825,
(b) FOR [15LU] (C/C LIGHT), [16LU] (C/C LIGHT), [17LU] (C/C LIGHT), [22LU] (C/C LIGHT)
at AFT cargo-compartment door 826.
(2) Open the related cargo-compartment door and install the actuator safety-locks (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the ceiling panel in the FWD cargo-compartment to get access to the electrical connector (5):
(a) FOR [13LU] (C/C LIGHT)
remove 131AC,
(b) FOR [14LU] (C/C LIGHT)
remove 131BC,
(c) FOR [20LU] (C/C LIGHT)
remove 131CC,
(d) FOR [21LU] (C/C LIGHT)
remove 131DC.
(4) Remove the ceiling panel in the AFT cargo-compartment to get access to the electrical connector (5):
(a) FOR [15LU] (C/C LIGHT)
remove 151BC,
(b) FOR [16LU] (C/C LIGHT)
remove 151CC,
(c) FOR [17LU] (C/C LIGHT)
remove 161AC,
(d) FOR [22LU] (C/C LIGHT)
remove 151AC.

Subtask 33-34-11-010-050-C ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) FOR [13LU] (C/C LIGHT)
at FWD cargo-compartment door 825,
(b) FOR [15LU] (C/C LIGHT), [16LU] (C/C LIGHT), [17LU] (C/C LIGHT)
at AFT cargo-compartment door 826.
(2) Open the related cargo-compartment door and install the actuator safety-locks (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the ceiling panel in the FWD cargo-compartment to get access to the electrical connector (5):
(a) FOR [13LU] (C/C LIGHT)
remove 131AC.
(4) Remove the ceiling panel in the AFT cargo-compartment to get access to the electrical connector (5):
(a) FOR [15LU] (C/C LIGHT)
remove 151BC,
(b) FOR [16LU] (C/C LIGHT)
remove 151CC,
(c) FOR [17LU] (C/C LIGHT)
remove 161AC.

Subtask 33-34-11-010-050-E ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) FOR [13LU] (C/C LIGHT), [14LU] (C/C LIGHT)
at FWD cargo-compartment door 825,
(b) FOR [15LU] (C/C LIGHT), [16LU] (C/C LIGHT), [17LU] (C/C LIGHT)
at AFT cargo-compartment door 826.
(2) Open the related cargo-compartment door and install the actuator safety-locks (Ref. AMM TASK 52-30-00-860-001).

Subtask 33-34-11-010-050-G ** ON A/C NOT FOR ALL

4. Procedure
Subtask 33-34-11-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Ballast Unit and the Lampholder
(1) Disconnect the electrical connector (5).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Release the quick-release fasteners (1).
(4) Remove the glass cover (2) from the lamp housing (10).
(5) Push the buttons (4) at each end of the lampholder (6) and remove the fluorescent lamp (3).
(6) Remove the screws (11), the washers (12) and the nuts (13).
(7) Remove the cover plate (8) and the gasket (9) from the lamp housing (10).
(8) Remove the screws (14).
(9) Remove the ballast unit and lampholder (6) and the reflector (7) from the lamp housing (10).

Subtask 33-34-11-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the Ballast Unit and the Lampholder

Ballast Unit with Lampholder ** ON A/C NOT FOR ALL

(1) Release the quick-release studs (1) and remove the glass cover (2).
(2) Push the buttons (4) at each end of the ballast unit with lampholder (5) and remove the fluorescent lamp (3).
(3) Release the quick-release studs (6) and carefully lower the ballast unit with lampholder (5) until you get access to the connector (8).

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.

(4) Disconnect the electrical connector (8) from the socket (7).
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(6) Remove the ballast unit with lampholder (5).

[Rev.10 from 2021] 2026.04.01 00:54:26 UTC