BITE Test of the BSCU - Ground Scanning

TASK 32-46-00-740-002-A
BITE Test of the BSCU - Ground Scanning

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	WARNING NOTICE(S)

B. 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 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 31-32-00-860-009-A	Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page
TASK 34-10-00-860-004-A	Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01	Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02	Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)

3. Job Set-up
Subtask 32-46-00-860-054-A

A. Aircraft Maintenance Configuration
(1) On panel 400VU, make sure that the L/G normal control-lever is in the DOWN position.
(2) On panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is in the ON position.
(3) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(4) Do the IR alignment procedure (Ref. AMM TASK 34-10-00-860-004).
(5) On one MCDU, get the SYSTEM REPORT/TEST/L/G page (Ref. AMM TASK 31-32-00-860-009).

Subtask 32-46-00-941-055-A

B. Safety Precautions
(1) Put a WARNING NOTICE(S) on the L/G normal control-lever to tell persons not to move it.

Subtask 32-46-00-865-051-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33

4. Procedure
Subtask 32-46-00-740-051-B

A. Do this test:

NOTE: This test is for CHAN/SYS 1. For CHAN/SYS 2, use the indications between parentheses.

ACTION	RESULT
1.On the MCDU, push the line key adjacent to the BSCU 1(2) indication.	the BSCU CHAN/SYS 1(2) page comes into view.
2.Push the line key adjacent to the GROUND SCANNING indication.	the BSCU CHAN/SYS 1(2)/GROUND SCANNING page comes into view. If the test finds no faults: - the NO FAULT DETECTED indication comes into view. If the test results are incorrect: - a list of faults comes into view. NOTE: The prompt ">" to the right of the Class number shows that there are TSD pages related to this fault. Push the line key adjacent to the prompt to get access to these pages.
3.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST/L/G page.

5. Close-up
Subtask 32-46-00-860-053-A

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:31:50 UTC