DOC AIRBUS | AMM A320FRemoval of the Power Supply Unit
TASK 33-48-37-000-001-A
Removal of the Power Supply Unit
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 33-48-37-020-050-A
[Rev.10 from 2021]
2026.04.01 00:56:43 UTC
Removal of the Power Supply Unit
FIN: 4LV
1. Reason for the JobSelf 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 |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 191HB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
Power Supply Unit 4LVWARNING:
ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE ENVIRONMENT.
Subtask 33-48-37-865-050-A A. Open, safety and tag this(these) circuit breaker(s):
Subtask 33-48-37-860-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | LIGHTING/EXT LT/BEACON/LOWER | 5LV | U03 |
B. Aircraft Maintenance Configuration
(1) Make sure that switch 2LV BEACON ON-OFF on overhead panel 25VU is in the OFF position.
Subtask 33-48-37-010-050-A (1) Make sure that switch 2LV BEACON ON-OFF on overhead panel 25VU is in the OFF position.
C. Get Access
(1) Remove access panel 191HB from the belly fairing to get access to the power supply unit (1) (Ref. AMM TASK 53-35-13-000-002).
4. Procedure(1) Remove access panel 191HB from the belly fairing to get access to the power supply unit (1) (Ref. AMM TASK 53-35-13-000-002).
Subtask 33-48-37-020-050-A
A. Removal of the Power Supply Unit
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Remove the screws (4) and (6) and the washers (3).
(5) Remove the power supply unit (1) from the fuselage.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(1) Remove and discard the lockwire from the electrical connector (5). NOTE: Lockwire is not available, if it is a self-locking connector.
WARNING:
DO NOT DISCONNECT THE ELECTRICAL CONNECTIONS FOR AT LEAST 2 MINUTES AFTER YOU DE-ENERGIZE THE ELECTRICAL CIRCUITS.
CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
(2) Disconnect the electrical connectors (2) and (5) from the power supply unit (1). (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Remove the screws (4) and (6) and the washers (3).
(5) Remove the power supply unit (1) from the fuselage.