Removal of the Seat Row Call/Numbering Light

TASK 23-73-14-000-006-A
Removal of the Seat Row Call/Numbering Light

FIN: 505RH ** ON A/C NOT FOR ALL
FIN: 506RH ** ON A/C NOT FOR ALL

1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. 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)
Seat Row Call/Numbering Light

3. Job Set-up
Subtask 23-73-14-861-056-A ** ON A/C NOT FOR ALL

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

Subtask 23-73-14-865-065-A ** ON A/C NOT FOR ALL

B. Open, safety and tag these circuit breakers in this sequence:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU A ESS/LINE 1	154RH	G04
49VU	COM/CIDS/DEU A ESS/LINE 2	155RH	G05
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M09
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M10
121VU	COM NAV/CIDS/DEU A NORM/L MID	165RH	M11
121VU	COM NAV/CIDS/DEU A NORM/R MID	166RH	M12
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M13
121VU	COM NAV/CIDS/DEU A NORM/R AFT	168RH	M14

4. Procedure

NOTE: If the seat row call/numbering light has LEDs, it is necessary to remove the Printed Circuit Board (PCB) (Ref. AMM 23-73-49 Board - Printed Circuit).

Subtask 23-73-14-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the seat row call/numbering light
(1) Put a small screwdriver between the switch panel cover (4) and the Passenger Service Information Unit (PSIU).
(2) Push the switch panel cover (4) carefully down until the lug (3) is released.
(3) Pull the switch panel cover (4) in the direction of the arrow until the lugs (5) are released.
(4) Remove the seat row call/numbering light (2).

[Rev.10 from 2021] 2026.03.31 23:17:52 UTC