Loss of the ILS RECEIVER 2 OUTPUT PORT 2 Bus Identified by the EIS (DMC3)

TASK 34-36-00-810-813-A
Loss of the ILS RECEIVER 2 OUTPUT PORT 2 Bus Identified by the EIS (DMC3)

1. Possible Causes

MMR-2 [40RT2]
wiring of the ILS RECEIVER OUT PORT 2 bus from the MMR-2 (40RT2) 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
ASM 343601
AMM 34-36-31-000-001	Removal of the ILS Receiver
AMM 34-36-31-400-001	Installation of the ILS Receiver

3. Fault Confirmation
Subtask 34-36-00-865-060-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	K09
** ON A/C NOT FOR ALL
121VU	COM NAV/ILS/2	1RT2	K09
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	L07

Subtask 34-36-00-740-070-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the EIS input test (system 3) AMM 31-60-00-740-002.

Subtask 34-36-00-740-070-B ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 34-36-00-810-064-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DMC 3 : NO ILS 2 DATA:

(1) If the fault continues:

do a check and repair the wiring of the ILS RECEIVER OUT PORT 2 bus from the MMR-2 (40RT2) to the first terminal block ASM 343601.

Subtask 34-36-00-810-064-C ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message MMR2(40RT2)/DMC3(1WT3):

(1) If the fault continues:

do a check and repair the wiring of the ILS RECEIVER OUT PORT 2 bus from the MMR-2 (40RT2) to the first terminal block ASM 343601.

Subtask 34-36-00-740-071-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:32:58 UTC