Ground Scanning of the CFDIU

TASK 31-32-00-740-003-A
Ground Scanning of the CFDIU

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

NOTE: IGNORE ALL THE ECAM WARNINGS AS LONG AS THE COMPUTER IS IN THE MENU MODE.

ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. 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)

3. Job Set-up
Subtask 31-32-00-861-056-A

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

Subtask 31-32-00-865-059-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AUTO FLT/MCDU/1	11CA1	B01
** ON A/C NOT FOR ALL
49VU	AUTO FLT/MCDU/1	11CA1	H07
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	CFDS/CFDIU/BACK/UP	8TW	J17
** ON A/C ALL
121VU	AUTO FLT/MCDU/2	11CA2	N20
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J41
121VU	CFDS/CFDIU/BACK/UP	8TW	J40

4. Procedure
Subtask 31-32-00-740-052-A

A. Do this test:

ACTION	RESULT
1.Adjust the brightness of the MCDU 1(2) screen.	the MCDU 1(2) is on.
2.On the MCDU 1(2): push the MCDU MENU mode key.	On the MCDU 1(2): the MCDU MENU page comes into view.
3.On the MCDU 1(2): push the line key adjacent to the CFDS indication.	On the MCDU 1(2): the CFDS MENU page comes into view.
4.On the MCDU 1(2): push the line key adjacent to the SYSTEM REPORT/TEST indication.	On the MCDU 1(2): the SYSTEM REPORT/TEST page comes into view.
5.On the MCDU 1(2): push the line key adjacent to the INST indication.	On the MCDU 1(2): the SYSTEM REPORT/TEST INST page comes into view.
6.On the MCDU 1(2): push the line key adjacent to the CFDIU indication.	On the MCDU 1(2): the CFDIU menu page comes into view.
7.On the MCDU 1(2): push the line key adjacent to the GROUND SCANNING indication.	On the MCDU 1(2): if the GROUND SCANNING is ok, NO FAILURE comes into view on the CFDIU GROUND SCANNING page.

5. Close-up
Subtask 31-32-00-860-102-A

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line key adjacent to the RETURN indication until the CFDS MENU page comes into view.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Put the system back to the serviceable condition.
(4) Put the aircraft back to the serviceable condition.

[Rev.10 from 2021] 2026.04.01 00:34:03 UTC