Loss of the BSCU Bus 2 of the SDAC 2

TASK 31-54-00-810-896-A
Loss of the BSCU Bus 2 of the SDAC 2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-50-00-710-001	Ground Scanning of the Central Warning System
ASM 315403
AMM 31-55-34-000-001	Removal of the SDAC
AMM 31-55-34-400-001	Installation of the SDAC

3. Fault Confirmation
Subtask 31-54-00-710-228-A

A. Test
Do the ground scanning of the central warning systems AMM 31-50-00-710-001.

4. Fault Isolation
Subtask 31-54-00-810-145-A

A. If the test gives the maintenance message SDAC2 : NO DATA FROM BSCU1:

(1) If the fault continues:

do a check and repair the wiring from the SDAC 2 (1WV2) pins AB/14G, 14H to the first terminal block , ASM 315403.

Subtask 31-54-00-710-229-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:30:29 UTC