W DOC AIRBUS | AMM A320F

Removal of the Braking/Steering Control Unit (BSCU)

TASK 32-42-34-000-001-A
Removal of the Braking/Steering Control Unit (BSCU)

FIN: 10GG
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 2M (6 FT) - ADJUSTABLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
811
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 31-32-00-860-009-A
Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page
TASK 32-46-00-740-003-A
BITE Test of the BSCU - LRU Identification
F Braking/Steering Control Unit (BSCU)
3. Job Set-up
Subtask 32-42-34-861-052-A
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 32-42-34-810-050-A ** ON A/C NOT FOR ALL
B. Trouble Shooting Data
   (1) You can print the Trouble Shooting Data (TSD) as follows:
  • get access to the SYSTEM/REPORT/TEST (Ref. AMM TASK 31-32-00-860-009).
  • on this page, push the line key adjacent to the BSCU1 and/or BSCU2 indication.
  • on the BSCU SYS1 and/or BSCU SYS2 page, push the line key adjacent to the TROUBLE SHOOTING DATA indication to get the TROUBLE SHOOTING DATA page.
  • print the TROUBLE SHOOTING DATA page.
   (2) If you did the deactivation procedure of the BSCU before the removal:
  • Make sure that all the printed documents related to the BSCU (PFR, TSD, ground report, ground scanning, class 3 fault messages) are attached to it.
Subtask 32-42-34-810-050-C ** ON A/C NOT FOR ALL
B. Trouble Shooting Data
   (1) You can print the Trouble Shooting Data (TSD) as follows:
  • get access to the SYSTEM/REPORT/TEST (Ref. AMM TASK 31-32-00-860-009).
  • on this page, push the line key adjacent to the BSCU1 and/or BSCU2 indication.
  • on the BSCU CHAN1 and/or BSCU CHAN 2 page, push the line key adjacent to the TROUBLE SHOOT DATA indication to get the TROUBLE SHOOTING DATA page.
  • print the TROUBLE SHOOTING DATA pages.
   (2) If you did the deactivation procedure of the BSCU before the removal:
  • Make sure that all the printed documents related to the BSCU (PFR, TSD, ground report, ground scanning, class 3 fault messages) are attached to it.
Subtask 32-42-34-970-050-A
C. Check of the BSCU pin programming
   (1) Do the LRU IDENTIFICATION selection (Ref. AMM TASK 32-46-00-740-003).
NOTE: Print or record the reference of the pin programming which is shown on the LRU IDENTIFICATION page.
Subtask 32-42-34-010-050-A
D. Get Access to the Avionics Compartment
   (1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 811.
   (2) Open the access door 811.
Subtask 32-42-34-865-050-A
E. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/SPLY4GGM36
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/CTL3GGM35
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/CTL1GGM34
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY2GGM33
4. Procedure
Subtask 32-42-34-020-050-A
A. Removal of the BSCU
   (1) Loosen the nuts (4).
   (2) Lower the nuts (4).
   (3) Pull the BSCU (1) on its rack (3) to disconnect the electrical connectors (2).
   (4) Remove the BSCU (1) from its rack (3).
   (5) Put blanking caps on the disconnected electrical connectors.
[Rev.10 from 2021] 2026.04.01 00:48:04 UTC
"Aviabrain" 2025