Functional Test of the Maintenance Sockets

TASK 33-31-00-720-001-A
Functional Test of the Maintenance Sockets

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

FIN: 10LJ
FIN: 8LJ

1. Reason for the Job
To make sure that the maintenance sockets operate correctly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	1	MULTIMETER - STANDARD

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
314AR

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 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 52-41-23-010-801-A	Opening of Access Door 314AR
TASK 52-41-23-410-801-A	Closing of Access Door 314AR

3. Job Set-up
Subtask 33-31-00-861-051-A

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

Subtask 33-31-00-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	LIGHT-SEC19	1LJ	E07
** ON A/C NOT FOR ALL
2001VU	LIGHT/SEC19	1LJ	E07

Subtask 33-31-00-010-052-A

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position in Zone 314.
(2) Open the access door 314AR (Ref. AMM TASK 52-41-23-010-801).

4. Procedure
Subtask 33-31-00-860-050-A

A. Preparation for the Test.
(1) Use the MULTIMETER - STANDARD for this test.

Subtask 33-31-00-720-050-A

B. Functional Test
(1) Do the functional test of the maintenance sockets:

ACTION	RESULT
1.In the section 19 service area:	On the multimeter:
Measure the output voltage between the connections + and N on maintenance sockets 8LJ and 10LJ.	The output voltage is 28V DC.

5. Close-up
Subtask 33-31-00-410-051-A

A. Close Access
(1) Remove the multimeter.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the access door 314AR (Ref. AMM TASK 52-41-23-410-801).
(4) Remove the access platform(s).

Subtask 33-31-00-862-051-A

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

[Rev.10 from 2021] 2026.04.01 00:54:11 UTC