Loss of the Synchro Signal of the Rudder Position Transducer Unit by the SDAC 1

TASK 31-54-00-810-911-A
Loss of the Synchro Signal of the Rudder Position Transducer Unit by 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
AMM 31-55-34-000-001	Removal of the SDAC
AMM 31-55-34-400-001	Installation of the SDAC

3. Fault Confirmation
Subtask 31-54-00-710-258-A

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

4. Fault Isolation
Subtask 31-54-00-810-160-A

A. If the test gives the maintenance message SDAC1 : RUDDER POS XDCR 42WV:

(1) If the fault continues:

do a check and repair the wiring from the SDAC 1 (1WV1) pins AB/7A, 7B, 7C to the first terminal block.

Subtask 31-54-00-710-259-A

B. Do the test given in Para. 3.

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