Reception of the HDG Data on the VOR/ADF/DME RMI Inoperative

TASK 34-57-00-810-812-A
Reception of the HDG Data on the VOR/ADF/DME RMI Inoperative

1. Possible Causes

RMI-VOR/ADF/DME [21FN]
ADIRU-1 [1FP1]
wiring of the OUTPUT BUS 2 bus from the ADIRU1 (1FP1) to the VOR/ADF/DME RMI (21FN)
ADIRU-3 [1FP3]
wiring of the OUTPUT BUS 2 bus from the ADIRU3 (1FP3) to the VOR/ADF/DME RMI (21FN)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-14-00-740-001	Interface Test of the IR
ASM 345701
AMM 34-57-22-000-002	Removal of the VOR/ADF/DME RMI
AMM 34-57-22-400-002	Installation of the VOR/ADF/DME RMI

3. Fault Confirmation
Subtask 34-57-00-740-060-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the Interface test of the IR AMM 34-14-00-740-001.

4. Fault Isolation
Subtask 34-57-00-810-064-B ** ON A/C NOT FOR ALL

A. If during the test, the HDG flag comes into view on the VOR/ADF/DME RMI:

do a check of the position of the ATT/HDG selector switch on the SWITCHING panel 8VU.

(1) If the ATT/HDG selector switch is at NORM or F/O 3:

(a) If the fault continues:

1 If the fault continues:

do a check and repair the wiring of the OUTPUT BUS 2 bus from the ADIRU1 (1FP1) to the VOR/ADF/DME RMI (21FN) ASM 345701.

(2) If the ATT/HDG selector switch is at CAPT 3:

(a) If the fault continues:

1 If the fault continues:

do a check and repair the wiring of the OUTPUT BUS 2 bus from the ADIRU3 (1FP3) to the VOR/ADF/DME RMI (21FN) ASM 345701.

Subtask 34-57-00-740-061-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:33 UTC