Installation of the Door Microswitch

TASK 25-45-33-400-001-A
Installation of the Door Microswitch

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	ELEC CONTACTS INSERTION EXTRACTION TOOL M15.570-22

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 33-24-00-710-001-A	Operational Test of the Lavatory Lighting LQ
TASK 33-26-00-710-001-A	Operational Test of the Lavatory Lighted Signs WJ
Door Microswitch

3. Job Set-up
Subtask 25-45-33-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-45-33-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	LAV FWD-OCCUPIED	1WJ	F01
** ON A/C ALL
2000VU	LIGHT-LAV	1LQ	J01
** ON A/C NOT FOR ALL
2000VU	LAV FWD & MID-OCCUPIED	1WJ	F01
** ON A/C ALL
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04

4. Procedure
Subtask 25-45-33-210-050-A

A. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.

Subtask 25-45-33-420-050-A

B. Installation of the Door Microswitch

Door Microswitch

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Connect the electrical connector (4) as follows:
(a) Connect the electrical connector (4).

NOTE: Use the Insertion/Extraction tool ELEC CONTACTS INSERTION EXTRACTION TOOL M15.570-22 to connect the electical connector (3) type 'B'.

(b) Carefully position the door microswitch assembly (1) on the door frame.
(4) Install the screws (2).
(5) Tighten the screws (2).
(6) Make sure that the work area is clean and clear of tools and other items.
(7) Close the lavatory door.

Subtask 25-45-33-865-052-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 NOT FOR ALL
2000VU	LAV FWD-OCCUPIED	1WJ	F01
** ON A/C ALL
2000VU	LIGHT-LAV	1LQ	J01
** ON A/C NOT FOR ALL
2000VU	LAV FWD & MID-OCCUPIED	1WJ	F01
** ON A/C ALL
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04

Subtask 25-45-33-710-050-A

D. Operational of the Door Microswitch
(1) Do the operational test of the lavatory lighting (Ref. AMM TASK 33-24-00-710-001).
(2) Do the operational test of the lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001).

5. Close-up
Subtask 25-45-33-862-050-A

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 12:33:09 UTC