Loss of the VOR1 Display on the DDRMI

TASK 34-55-00-810-832-A
Loss of the VOR1 Display on the DDRMI

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-55-00-740-002	BITE Test of the VOR/MKR
ASM 345501
AMM 34-57-22-000-001	Removal of the VOR/DME RMI
AMM 34-57-22-400-001	Installation of the VOR/DME RMI

3. Fault Confirmation
Subtask 34-55-00-740-086-A ** ON A/C NOT FOR ALL

A. Test
Do the BITE test of the VOR/MARKER (system 1) AMM 34-55-00-740-002.

4. Fault Isolation
Subtask 34-55-00-810-089-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DMC1/2 (1WT1/2)/DDRMI (1FN)/VOR1(3RS1):

(1) If the fault continues:

remove the DDRMI
do a check and repair the wiring between the DDRMI and the first terminal block : for pins A/<B, <C ASM 345501
install the DDRMI.

Subtask 34-55-00-740-087-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:32 UTC