Engine Interface Unit (EIU) Ground Scanning [CFML]

TASK 73-25-34-710-806-A
Engine Interface Unit (EIU) Ground Scanning

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page

3. Job Set-up
Subtask 73-25-34-861-067-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 73-25-34-865-094-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 73-25-34-860-110-A

C. Aircraft Maintenance Configuration
(1) On the left or right MCDU, get the SYSTEM REPORT/TEST ENG page (Ref. AMM TASK 31-32-00-860-012).

4. Procedure
Subtask 73-25-34-710-068-A

A. Engine Interface Unit (EIU) Ground Scanning
(1) Do this test:

ACTION	RESULT
1.Push the line key adjacent to the EIU1(EIU2) indication.	The EIU1(EIU2) menu comes into view.
2.Push the line key adjacent to the TESTS indication.	On the MENU page, the TEST menu comes into view.
3.Push the line key adjacent to the GROUND SCANNING indication.	The GROUND SCANNING page comes into view. After a short time: If there is no failure, the NO FAULT DETECTED message comes into view. If there are failures, the first page of text failures comes into view.
4.Push the line key adjacent to the RETURN indication until the CFDS menu comes into view.
5.Stop the MCDU.

5. Close-up
Subtask 73-25-34-861-068-A

A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 03:05:53 UTC