Removal of the Wall Disconnect Box (WDB)

TASK 23-33-47-000-001-A
Removal of the Wall Disconnect Box (WDB)

WARNING: ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE ENVIRONMENT.

FIN: 50MK1 ** ON A/C NOT FOR ALL
FIN: 50MK2 ** ON A/C NOT FOR ALL
FIN: 50MK3 ** ON A/C NOT FOR ALL
FIN: 50MK4 ** ON A/C NOT FOR ALL
FIN: 50MK5 ** ON A/C NOT FOR ALL
FIN: 50MK6 ** ON A/C NOT FOR ALL
FIN: 50MK7 ** ON A/C NOT FOR ALL
FIN: 50MK8 ** 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	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-23-44-000-001-A	Removal of the Lower Sidewall Panels (Dado Panels)
Wall Disconnect Box

3. Job Set-up
Subtask 23-33-47-861-051-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 23-33-47-865-066-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
2000VU	PES-VIDEO-CONTROL-VCC-DS/C	21MH	C02
2000VU	PES-VIDEO-CONTROL-MAIN	20MH	C01
2000VU	PES-MUSIC-CABIN AFT-RH	25MK	D05
2000VU	PES-MUSIC-CABIN AFT-LH	22MK	D04
2000VU	PES-MUSIC-CABIN FWD-RH	24MK	D03
2000VU	PES-MUSIC-CABIN FWD-LH	23MK	D02
2000VU	PES-MUSIC-CTL	21MK	D01

Subtask 23-33-47-010-050-D ** ON A/C NOT FOR ALL

C. Get access to the applicable Wall Disconnect Box (WDB)
(1) Remove the lower sidewall panel in the area of the related WDB (Ref. AMM TASK 25-23-44-000-001).
(2) Release the fasteners (8) and remove the protection cap (9) of the related WDB (7).

4. Procedure
Subtask 23-33-47-020-052-AE ** ON A/C NOT FOR ALL

A. Removal of the Wall Disconnect Box (WDB)
(1) Before you disconnect the electrical connectors, make sure that there is identification on them. This is important for the subsequent installation procedure.

CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE COMPONENT DURING THE PROCEDURE. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO COMPONENT.

(2) Release the spring latches (13) and disconnect the electrical connectors (14).
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Remove the protective cover (12) as follows:
(a) Remove the screw (1) and the washer (2).
(b) Remove the cable support (3), spacers (4) and (5).
(c) Remove the screws (10) and the washers (11).
(d) Remove the protective cover (12).
(5) Carefully remove the WDB (7) and the insulation strip (6).
(6) Keep the parts for the subsequent installation procedure.

[Rev.10 from 2021] 2026.04.02 07:24:26 UTC