W DOC AIRBUS | AMM A320F

Removal of the IGGS Controller Unit

TASK 47-31-34-000-001-A
Removal of the IGGS Controller Unit

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:
  • ON THE THS OR IN THE REAR FUSELAGE
  • ON TOP OF THE WINGS OR PYLONS.
WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
ZONE: 121
FIN: 1YA ** 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
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
CAP - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
121
AVIONICS COMPARTMENT
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-002-A
Procedure to Get Access to the SYSTEM REPORT/TEST/AIR COND Page
F IGGS Controller Unit (ICU) - Location and Detail
3. Job Set-up
Subtask 47-31-34-970-050-A ** ON A/C NOT FOR ALL
A. Trouble Shooting Data
   (1) If available, you can print the Trouble Shooting Data (TSD) as follows:
  • Get access to the SYSTEM REPORT/TEST/AIR COND Page (Ref. AMM TASK 31-32-00-860-002).
  • On this page, push the line key adjacent to the CSAS indication.
  • On the CSAS page, push the line key adjacent to the TROUBLE SHOOT DATA indication to get the TSD page(s).
  • Print the TSD page(s).
Subtask 47-31-34-860-052-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
Subtask 47-31-34-865-054-A ** ON A/C NOT FOR ALL
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAN28
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAP28
** ON A/C NOT FOR ALL
122VUCSAS / CTRL1HWU17
Subtask 47-31-34-010-050-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE below the access door 812.
   (2) Open the access door 812 to get access to the ICU.
4. Procedure
Subtask 47-31-34-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the IGGS Controller Unit (ICU)
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.
   (1) Disconnect the electrical connector (2) from the ICU (1).
   (2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (3) Loosen the four screws (3).
   (4) Carefully remove the ICU (1).
[Rev.10 from 2021] 2026.04.02 06:26:19 UTC
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