Loss of the LGCIU 2 Discrete on the DMC 2

TASK 31-63-81-810-907-A
Loss of the LGCIU 2 Discrete on the DMC 2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-60-00-740-007	GROUND SCANNING Test of the DMC
ASM 316200
AMM 31-63-34-000-001	Removal of the DMC
AMM 31-63-34-400-001	Installation of the DMC

3. Fault Confirmation
Subtask 31-63-81-740-260-A ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 31-63-81-810-175-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message LGCIU2 FLIGHT DISCRETE (5GA2)/ DMC2(1WT2):

(1) if the fault continues:

check the wiring from DMC2 (1WT2) pins AD/7A, 7B to the first terminal block ASM 316200

Subtask 31-63-81-740-261-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2018] 2026.04.04 04:31:03 UTC