Failure of the Lower ECAM DU

TASK 31-63-81-810-871-A
Failure of the Lower ECAM DU

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
AMM 31-63-22-000-001	Removal of the Display Unit
AMM 31-63-22-400-001	Installation of the Display Unit

3. Fault Confirmation
Subtask 31-63-81-740-190-A ** ON A/C NOT FOR ALL

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

Subtask 31-63-81-740-190-B ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 31-63-81-810-128-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DU ECAM 2:

Subtask 31-63-81-810-128-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message DU SD(4WT2)

Subtask 31-63-81-740-191-A

B. Do the test given in Para. 3.

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