Loss of the Upper ECAM DU by the DMC2

TASK 31-63-81-810-878-A
Loss of the Upper ECAM DU by the DMC2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-60-00-740-002	Perform Electronic Instrument System (EIS) Input Test
AMM 31-60-00-740-004	EIS System Test
ASM 316104
AMM 31-63-22-000-001	Removal of the Display Unit
AMM 31-63-22-400-001	Installation of the Display Unit
AMM 31-63-34-000-001	Removal of the DMC
AMM 31-63-34-400-001	Installation of the DMC

3. Fault Confirmation
Subtask 31-63-81-740-202-A ** ON A/C NOT FOR ALL

A. Test
Do the EIS input test AMM 31-60-00-740-002.

Subtask 31-63-81-740-202-B ** ON A/C NOT FOR ALL

A. Test
Do the EIS system test AMM 31-60-00-740-004.

4. Fault Isolation
Subtask 31-63-81-810-134-A

A. If the test gives the maintenance message DMC2 - DU ECAM1 LINK:

(1) If the fault continues:

do a check of the wiring from the upper ECAM DU (4WT1) to the DMC2 (1WT2)> ASM 316104.

(a) If there is no continuity:

(b) If there is continuity:

Subtask 31-63-81-740-203-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:31:00 UTC