PED Supply is not available at one Seat Assembly

TASK 25-21-00-810-866-A
PED Supply is not available at one Seat Assembly

1. Possible Causes

power converter
seat to seat harness
PED-power in-use indicator (PPUI)
power outlet unit (154HP*)
power outlet unit (156HP*)
USB-outlet unit (270HP*)
advanced power converter(500HP*)
in-seat power-supply unit (150HP*)
in-seat cable
Seat-to-seat cable

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	2	MULTIMETER - STANDARD

B. Referenced Information

REFERENCE	DESIGNATION
AMM 25-21-00-710-002	Operational Test of the In-Seat Power-Supply System (PED Power Supply)
AMM 25-21-36-000-802	Removal of the Advanced Power Converter
AMM 25-21-36-400-802	Installation of the Advanced Power Converter
AMM 25-21-37-000-001	Removal of the Power Outlet Units
AMM 25-21-37-000-802	Removal of the USB Power-Outlet Units
AMM 25-21-37-400-001	Installation of the Power Outlet Units
AMM 25-21-37-400-802	Installation of the USB Power-Outlet Units
AMM 25-21-38-000-001	Removal of the In-seat Power-Supply Unit
AMM 25-21-38-400-001	Installation of the In-seat Power-Supply Unit
AMM 25-21-42-000-001	Removal of the In-Seat Power-Supply Unit
AMM 25-21-42-400-001	Installation of the In-Seat Power-Supply Unit
AMM 25-21-61-000-001	Removal of the Cable - Seat to Seat
AMM 25-21-61-400-001	Installation of the Cable - Seat to Seat

3. Fault Confirmation
Subtask 25-21-00-710-096-A ** ON A/C NOT FOR ALL

A. Use a MULTIMETER - STANDARD to check if PED power at the outlet unit is available AMM 25-21-00-710-002.

4. Fault Isolation
Subtask 25-21-00-810-240-A ** ON A/C NOT FOR ALL

A. If the PED power supply is not available at the seat group, do the procedure that follows:
(1) Disconnect the connector P1 at the power converter (located under the related seat).
(2) Use the MULTIMETER - STANDARD to make sure that 115V AC is available at the connector P1.
(3) If there is 115V AC available at the connector P1, replace the power converter AMM 25-21-42-000-001 and AMM 25-21-42-400-001.
(4) If there is no 115V AC available do this procedure:

do the check and repair or replace the seat to seat harness to the seat FWD of the related seat group.

Subtask 25-21-00-810-240-AE ** ON A/C NOT FOR ALL

A. If the PED power supply is not available:
(1) Do a check of the wiring and the condition of the PED-power in-use indicator (PPUI).
(a) Replace the defective wiring and/or PPUI.
(2) If the fault continues:
(a) Replace the power outlet unit (154HP*) and/or power outlet unit (156HP*) ( AMM 25-21-37-000-001 and AMM 25-21-37-400-001).
(b) Replace the USB-outlet unit (270HP*) ( AMM 25-21-37-000-802 and AMM 25-21-37-400-802).
(3) If the fault continues:
(a) Disconnect the power connector from the in-seat power supply unit of the B/C seat and at the advance power converter of the Y/C seat.
(b) Use a MULTIMETER - STANDARD to make sure that 115VAC are available at the power connector.
(c) If there are 115VAC available at the power connector:

Replace the advanced power converter(500HP*) ( AMM 25-21-36-000-802 and AMM 25-21-36-400-802).
Replace the in-seat power-supply unit (150HP*) ( AMM 25-21-38-000-001 and AMM 25-21-38-400-001).

(d) If there are no 115VAC available:

Do a check and replace the defective in-seat cable and/or Seat-to-seat cable ( AMM 25-21-61-000-001 and AMM 25-21-61-400-001).

Subtask 25-21-00-710-097-A ** ON A/C NOT FOR ALL

B. Do the test as given in para.3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:01 UTC