Removal of the No Smoking/Fasten Seat Belt sign from the Passenger Service Information Unit and the C/B panels 2000VU/2001VU

TASK 23-73-63-000-001-A
Removal of the No Smoking/Fasten Seat Belt sign from the Passenger Service Information Unit and the C/B panels 2000VU/2001VU

WARNING: BE VERY CAREFUL WHEN YOU DO WORK ON CIRCUIT BREAKER PANELS. THERE IS A HIGH VOLTAGE BEHIND THESE PANELS.

FIN: 534RH ** ON A/C NOT FOR ALL
FIN: 535RH ** ON A/C NOT FOR ALL
FIN: 652RH ** ON A/C NOT FOR ALL
FIN: 653RH ** 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	SCREWDRIVER - SMALL

B. 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 23-73-00-00	CABIN INTERCOMMUNICATION DATA SYSTEM (CIDS) - DESCRIPTION AND OPERATION
No Smoking/Fasten Seat Belt Signs

3. Job Set-up
Subtask 23-73-63-861-052-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
For the location of this component, refer to paragraph Component Location
(Ref. AMM D/O 23-73-00-00).

Subtask 23-73-63-865-050-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
121VU	COM/CIDS/DEU A BAT/LINE 1	144RH	N13
121VU	COM/CIDS/DEU A BAT/LINE 2	145RH	N14
** 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
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M10
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L MID	165RH	M12
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L MID	165RH	M11
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R MID	166RH	M13
** ON A/C NOT FOR ALL
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
** ON A/C NOT FOR ALL
2001VU	CIDS/ DEU A NORM AFT LH	173RH	C07
2001VU	CIDS/ DEU A NORM AFT RH	174RH	C08
2001VU	CIDS/ DEU A NORM MID 2 LH	175RH	C05
2001VU	CIDS/ DEU A NORM MID 2 RH	176RH	C06

4. Procedure
Subtask 23-73-63-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the No Smoking/Fasten Seat Belt (NS/FSB) sign

No Smoking/Fasten Seat Belt Signs ** ON A/C NOT FOR ALL

(1) Removal of the NS/FSB sign with bulbs from the Passenger Service Information Unit (PSIU)
(a) Remove the section hose (1) from one side of the mounting rail (2).
(b) Pull and lower the PSIU (3) to get access to the NS/FSB sign (7).
(c) Release the spring clips (4) with a SCREWDRIVER - SMALL and remove the lens (5).
(d) Put identification on all the electrical wires, before you disconnect them.
(e) Disconnect the electrical connectors (8) from the NS/FSB sign (7).
(f) Release the spring clips (6) on both sides of the housing and remove the NS/FSB sign (7).

(2) Removal of the NS/FSB sign with LEDs from the Passenger Service Information Unit (PSIU)
(a) Remove the section hose (1) from one side of the mounting rail (2).
(b) Pull and lower the PSIU (3) to get access to the NS/FSB sign (10).
(c) Release the spring clips (9) with a SCREWDRIVER - SMALL and lower the NS/FSB sign (10).
(d) Put identification on all the electrical wires, before you disconnect them.
(e) Disconnect the electrical connector (11).
(f) Remove the NS/FSB sign housing (10).

(3) Removal of the NS/FSB sign with bulbs from the C/B panels 2000VU/2001VU
(a) Release the quick release fasteners (20) and lower the C/B panel (21).
(b) Release the detent hook (22) and lower one side of the C/B panel (21).
(c) Release the spring clips (12) with a SCREWDRIVER - SMALL and remove the lens (13).
(d) Release the spring clips (14) with a SCREWDRIVER - SMALL and lower the NS/FSB sign (15).
(e) Put identification on all the electrical wires, before you disconnect them.
(f) Disconnect the electrical connectors (16) from the NS/FSB sign (15).
(g) Remove the NS/FSB sign (15).

(4) Removal of the NS/FSB sign with LEDs from the C/B panels 2000VU/2001VU
(a) Release the spring clips (17) with a SCREWDRIVER - SMALL and lower the NS/FSB sign (18).
(b) Put identification on all the electrical wires, before you disconnect them.
(c) Disconnect the electrical connector (19).
(d) Remove the NS/FSB sign (18).

[Rev.10 from 2021] 2026.04.02 06:12:38 UTC