Loss of the ADF1 Display on the RMI

TASK 34-53-00-810-827-A
Loss of the ADF1 Display on the RMI

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-53-00-740-003	BITE Test of the ADF
ASM 345301
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 34-53-00-740-090-A ** ON A/C NOT FOR ALL

A. Test
Do the BITE test of the ADF (system 1) AMM 34-53-00-740-003.

4. Fault Isolation
Subtask 34-53-00-810-085-C ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message
DMC1/2/3 (1WT1/2/3)/DDRMI (1FN)/ADF1 (2RP1):

(1) If the fault continues:

remove the VOR/ADF/DME RMI
do a check and repair the wiring between the VOR/ADF/DME RMI and the first terminal block: for pins A/18 and 19 of the VOR/ADF/DME RMI ASM 345301
install the VOR/ADF/DME RMI.

Subtask 34-53-00-740-091-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:28 UTC