Loss of the ADR 3 BUS 3 Output Identified by the EIS 1

TASK 34-13-00-810-894-A
Loss of the ADR 3 BUS 3 Output Identified by the EIS 1

1. Possible Causes

ADIRU-3 [1FP3]
wiring of the ADR OUTPUT BUS 3 bus from the ADIRU 3 (1FP3) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-60-00-740-002	Perform Electronic Instrument System (EIS) Input Test
AMM 31-60-00-740-007	GROUND SCANNING Test of the DMC
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
ASM 341301

3. Fault Confirmation
Subtask 34-13-00-740-162-A ** ON A/C NOT FOR ALL

A. Test
Do the EIS input test (system 1) AMM 31-60-00-740-002.

Subtask 34-13-00-740-162-B ** ON A/C NOT FOR ALL

A. Test
Do the Ground Scanning Test of the DMC (system 1) AMM 31-60-00-740-007.

4. Fault Isolation
Subtask 34-13-00-810-143-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DMC 1 : NO ADC 3 DATA:

(1) If the fault continues:

do a check and repair the wiring of the ADR OUTPUT BUS 3 bus from the ADIRU 3 (1FP3) to the first terminal block ASM 341301.

Subtask 34-13-00-810-143-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message ADIRU3(1FP3)BUSX ADR/DMC1(1WT1)

(1) If the fault continues:

do a check and repair the wiring of the ADR OUTPUT BUS 3 bus from the ADIRU 3 (1FP3) to the first terminal block ASM 341301.

Subtask 34-13-00-740-182-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:27 UTC