Installation of the In-Seat Power-Supply Unit

TASK 25-21-42-400-001-A
Installation of the In-Seat Power-Supply Unit

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

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-21-00-710-002-A	Operational Test of the In-Seat Power-Supply System (PED Power Supply)
ISPS Unit

3. Job Set-up
Subtask 25-21-42-860-050-A ** ON A/C NOT FOR ALL

A. Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-21-42-865-057-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	PED	50HP	B01
2000VU	PES MUSIC FWD - RH	24MK	D03
2000VU	PES-MUSIC-CABIN-LH	23MK	D02
2000VU	PES MUSIC CTL	21MK	D01

4. Procedure
Subtask 25-21-42-420-050-C ** ON A/C NOT FOR ALL

A. Installation of the ISPS Unit

ISPS Unit ** ON A/C NOT FOR ALL

(1) At the related passenger seat:
(a) Carefully put the ISPS unit (4) in position and attach it with the studs (3).

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

(b) Install the electrical bonding straps (12), the washers (11) and the nuts (10) (Ref. AMM TASK 20-28-00-912-802).
(c) Connect the electrical connectors:

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

1 Remove the CAP-BLANKING from each electrical connector and receptacle.
2 Make sure that all the electrical connections are clean and in the correct condition.
3 Connect the electrical connectors (5), (6), (7), (8) and (9) as identified during the removal procedure.
(d) Close the cover(2) and engage the quick-release studs (1).
(e) Make sure that the work area is clean and clear of tools and other items.
(f) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 25-21-42-865-055-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	PED	50HP	B01

Subtask 25-21-42-710-050-A ** ON A/C NOT FOR ALL

C. Operational Test
(1) Do the operational test of the (PED) power-outlet of the passenger seat (Ref. AMM TASK 25-21-00-710-002).

5. Close-up
Subtask 25-21-42-862-050-A ** ON A/C NOT FOR ALL

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.9 from 2019] 2026.03.31 23:30:36 UTC