Loss of the L Yellow Brake Pressure-Transducer Input of the SDAC 1

TASK 31-54-00-810-817-A
Loss of the L Yellow Brake Pressure-Transducer Input of the SDAC 1

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
AWM 315470
AMM 31-55-34-000-001	Removal of the SDAC
AMM 31-55-34-400-001	Installation of the SDAC

3. Fault Confirmation
Subtask 31-54-00-865-056-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10

Subtask 31-54-00-710-070-A

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

4. Fault Isolation
Subtask 31-54-00-810-066-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message SDAC1 : LH Y BRK PRESS XDCR 63GG:

(1) If the fault continues:

do a check and repair the wiring from the SDAC 1 (1WV1) pins AB/13C, 13D to the first terminal block , AWM 315470.

Subtask 31-54-00-810-066-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message SDAC1 : LH Y BRK PRESS XDCR 101GG:

(1) If the fault continues:

do a check and repair the wiring from the SDAC 1 (1WV1) pins AB/13C, 13D to the first terminal block , AWM 315470.

Subtask 31-54-00-710-071-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:30:24 UTC