Installation of the Reading Light Switch-Card

TASK 23-73-38-400-803-A
Installation of the Reading Light Switch-Card

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-45-400-001-A	Installation of the Passenger Service Unit
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)
Reading Light Switch-Card - Removal/Installation

3. Job Set-up
Subtask 23-73-38-861-059-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 23-73-38-420-053-A ** ON A/C NOT FOR ALL

A. Installation of the Reading Light Switch-Card
(1) Install the reading light switch-card (3) in its position in the Passenger Service Unit (PSU) (1).
(2) Make sure that the socket (7) is in the correct position.
(3) Put the two plastic catches into the holes (4) of the reading light switch-card (3) make sure that they lock correctly.
(4) Connect and lock the related connector (6) to the card socket (7).
(5) Carefully lock the drip water cover (2) on the reading light switch-card (3).
(6) Repeat steps 1 thru 5 for each reading light switch-card (3).
(7) Install the PSU (1). (Ref. AMM TASK 23-73-45-400-001)
(8) Make sure that the work area is clean and clear of tools and other items.

Subtask 23-73-38-865-073-A ** ON A/C NOT FOR ALL

B. 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	PASSENGER READING LIGHT	6LW	G06
2000VU	PASSENGER READING LIGHT	5LW	G05
2000VU	PASSENGER READING LIGHT	4LW	G04
2000VU	PASSENGER READING LIGHT	1LW	G01
** ON A/C NOT FOR ALL
2000VU	PASSENGER READING LIGHT	2LW	G02
** ON A/C NOT FOR ALL
2000VU	PASSENGER READING LIGHT	3LW	G03
** ON A/C NOT FOR ALL
2000VU	PASSENGER/READING/LIGHT	2LW	G02

5. Close-up
Subtask 23-73-38-862-055-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 05:39:01 UTC