Removal of the Passenger Entertainment System (PES) Main Multiplexer

TASK 23-33-31-000-001-A
Removal of the Passenger Entertainment System (PES) Main Multiplexer

ZONE: 128
FIN: 8MK ** 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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
PES Main Multiplexer

3. Job Set-up
Subtask 23-33-31-010-050-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in zone 128.
(2) Open the access door (Ref. AMM TASK 52-41-00-010-002) 824.

Subtask 23-33-31-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
123VU	SHED BUS/218XP/220XP SPLY	28XN	AC02
123VU	BUS 2/210XP/SPLY	7XN2	AF02
** ON A/C NOT FOR ALL
2000VU	PES-MUSIC - CTL	21MK	D01
** ON A/C NOT FOR ALL
2000VU	PES-MUSIC-CTL	21MK	D01

4. Procedure
Subtask 23-33-31-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Main Multiplexer PES
(1) Loosen the nut (3).
(2) Lower the nut (3).
(3) Pull the multiplexer (5) on its rack (2) to disconnect the electrical connectors (1).
(4) Remove the multiplexer (5) from its rack (2).
(5) Put CAP - BLANKING on the disconnected electrical connectors (1).

[Rev.10 from 2021] 2026.04.02 06:12:07 UTC