Fault of the Escape Slide Light at the AFT Passenger/Crew Doors (Light On)

TASK 25-62-00-810-823-A
Fault of the Escape Slide Light at the AFT Passenger/Crew Doors (Light On)

1. Possible Causes

ESCAPE SLIDE AFT L [7502MM]
ESCAPE SLIDE AFT R [7503MM]
EPSU [13WL]
aircraft wiring
PROX SW-HANDLE, L AFT PAX/CREW DOOR [17WV1]
PROX SW-HANDLE, R AFT PAX/CREW DOOR [17WV2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 25-62-44-000-002	Removal of the Left-Hand Escape-Slide Pack-Assembly
AMM 25-62-44-000-012	Removal of the Left-Hand Escape-Slide-Raft Pack-Assembly
AMM 25-62-44-400-006	Installation of the Left-Hand Escape-Slide Pack-Assembly
AMM 25-62-44-400-007	Installation of the Left-Hand Escape-Slide-Raft Pack-Assembly
AMM 33-51-00-710-001	Operational Test of the Emergency Lights
ASM 335102
AMM 33-51-38-000-001	Removal of the Emergency Power-Supply Unit (EPSU)
AMM 33-51-38-400-001	Installation of the Emergency Power-Supply Unit (EPSU)
AMM 52-71-11-000-001	Removal of the Proximity Switches of the Passenger/Crew Doors
AMM 52-71-11-400-001	Installation of the Proximity Switches of the Passenger/Crew Door

3. Fault Confirmation
Subtask 25-62-00-710-085-A ** ON A/C NOT FOR ALL

A. Do the operational test of the emergency lighting system AMM 33-51-00-710-001.

4. Fault Isolation
Subtask 25-62-00-810-085-A ** ON A/C NOT FOR ALL

A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.

Subtask 25-62-00-810-086-B ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message ESCAPE SLIDE LT SW / EPSU (13WL) AFT L:
(1) Replace the SLIDE/RAFT, DOOR 4, LH ESCAPE SLIDE AFT L [7502MM] :
(a) For escape-slides AMM 25-62-44-000-002 and AMM 25-62-44-400-006.
(b) For escape-slide rafts AMM 25-62-44-000-012 and AMM 25-62-44-400-007.
(2) If the fault continues:

Replace the SLIDE/RAFT, DOOR 4, RH ESCAPE SLIDE AFT R [7503MM] :

(a) For escape-slides AMM 25-62-44-000-002 and AMM 25-62-44-400-006.
(b) For escape-slide rafts AMM 25-62-44-000-012 and AMM 25-62-44-400-007.
(3) If the fault continues:

Replace the EPSU [13WL] AMM 33-51-38-000-001 and AMM 33-51-38-400-001.

(4) If the fault continues:

Do a check and repair the aircraft wiring from the EPSU [13WL] to the escape slide/escape slide (raft) connector 2873VC ASM 335102.

(5) If the fault continues:

Do a check and repair the aircraft wiring from the EPSU [13WL] to the escape slide/escape slide (raft) connector 2872VC ASM 335102.

(6) If the fault continues:

Replace the PROXIMITY SWITCH PROX SW-HANDLE, L AFT PAX/CREW DOOR [17WV1] AMM 52-71-11-000-001 and AMM 52-71-11-400-001.

(7) If the fault continues:

Replace the PROXIMITY SWITCH PROX SW-HANDLE, R AFT PAX/CREW DOOR [17WV2] AMM 52-71-11-000-001 and AMM 52-71-11-400-001.

(8) If the fault continues:

Do a check and repair the aircraft wiring from the EPSU [13WL] to the proximity switch 17WV1 ASM 335102.

(9) If the fault continues:

Do a check and repair the aircraft wiring from the EPSU [13WL] to the proximity switch 17WV2 ASM 335102.

Subtask 25-62-00-710-086-A ** ON A/C NOT FOR ALL

C. Do the test given in Para. 3.

5. Close-up
Subtask 25-62-00-860-053-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.

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