Reactivation of the BSCU Channel/System 1 or 2

TASK 32-42-00-440-006-A
Reactivation of the BSCU Channel/System 1 or 2

1. Reason for the Job
MMEL 32-42-03A
BRAKING/STEERING CONTROL UNIT (BSCU) CHANNEL 1
MMEL 32-42-04A
BRAKING/STEERING CONTROL UNIT (BSCU) CHANNEL 2
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 32-46-00-740-001-A	BITE Test of the BSCU

3. Job Set-up
Subtask 32-42-00-860-102-A

A. Aircraft Maintenance Configuration
(1) On the panel 400VU, make sure that the landing gear control-lever is in the DOWN position.
(2) Make sure that the CAPT and F/O brake pedals are released.
(3) On the panel 402VU, make sure that the A/SKID & N/W STRG switch is at ON.
(4) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate:

the landing gear control-lever
the A/SKID & N/W STRG switch
the brake pedals.

Subtask 32-42-00-865-075-A

B. Table of the circuit breakers used in this procedure:

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

4. Procedure
Subtask 32-42-00-440-057-B

A. Reactivation of the BSCU System 1 or 2
(1) If the BSCU System 1 is deactivated:

Remove the safety clip and the tag and close the circuit breaker 2GG.

(2) If the BSCU System 2 is deactivated:

Remove the safety clip and the tag and close the circuit breaker 4GG.

(3) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).
(4) Do the trouble-shooting procedure related to the maintenance message.
(5) Remove the applicable entry in the log book that refers to the deactivation of the BSCU system 1 or 2.

5. Close-up
Subtask 32-42-00-860-103-A

A. Put the aircraft back to the serviceable condition.
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:47:29 UTC