Failure of the normal brake servovalve relay (NSV1 + NSV3)

TASK 32-42-00-810-933-A
Failure of the normal brake servovalve relay (NSV1 + NSV3)

1. Possible Causes

BSCU [10GG]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-42-00-710-001	Operational Check of the Normal Braking System
AMM 32-42-34-000-001	Removal of the Braking/Steering Control Unit (BSCU)
AMM 32-42-34-400-001	Installation of the Braking/Steering Control Unit (BSCU)
AMM 32-46-00-740-002	BITE Test of the BSCU - Ground Scanning

3. Fault Confirmation
Subtask 32-42-00-700-085-A

A. Test
(1) Do the operational test of the normal braking system. AMM 32-42-00-710-001
(2) Do the ground scanning of the BSCU during the operational test of the normal braking system. AMM 32-46-00-740-002

4. Fault Isolation
Subtask 32-42-00-810-216-A

A. If the test gives the maintenance messages BRK NORM SERVOVALVE 15GG and BRK NORM SERVOVALVE 16GG:

replace the BSCU [10GG] . AMM 32-42-34-000-001 AMM 32-42-34-400-001

Subtask 32-42-00-700-086-A

B. Do the test given in Para.3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:31:38 UTC