SATCOM Link Test of the ATSU

TASK 46-21-00-710-005-A
SATCOM Link Test of the ATSU

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)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
MCDU Access to COMM MENU Page
MCDU Access to COMM MENU Page ** ON A/C NOT FOR ALL
SATCOM LINK TEST Page

3. Job Set-up
Subtask 46-21-00-861-084-C ** ON A/C NOT FOR ALL

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

Subtask 46-21-00-865-075-A ** ON A/C NOT FOR ALL

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
49VU	SDAC/1/SPLY	3WV	F04
49VU	FWS/FWC1/SPLY	3WW	F01
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	ATSU 1	3TX1	L16
121VU	ATSU 1/SWTG	5TX1	L15
121VU	EIS/FWC2/SPLY	2WW	Q07

Subtask 46-21-00-860-095-C ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (upper and lower ECAM DUs only) (Ref. AMM TASK 31-60-00-860-001).
(2) On the center pedestal, on MCDU 1, adjust the brightness of the MCDU screen.

4. Procedure
Subtask 46-21-00-710-057-C ** ON A/C NOT FOR ALL

A. SATCOM Link Test of the ATSU

ACTION	RESULT
1.On MCDU1: Push the MCDU MENU mode key	On MCDU1: The MCDU MENU page comes into view. MCDU Access to COMM MENU Page MCDU Access to COMM MENU Page ** ON A/C NOT FOR ALL
2.On the MCDU MENU page: Push the line key adjacent to the ATSU indication.	On the MCDU 1: The ATSU DATALINK page comes into view.
3.On the ATSU DATALINK page: Push the line key adjacent to the COMM indication.	On MCDU1: The COMM MENU page comes into view.
4.On the COMM MENU page: Push the line key adjacent to the MAINTENANCE indication. SATCOM LINK TEST Page ** ON A/C NOT FOR ALL	On MCDU1: the MAINTENANCE page comes into view.
5.On the MAINTENANCE page: Push the line key adjacent to the TEST indication.	On MCDU1: The TEST page comes into view.
6.On the TEST page: Push the line key adjacent to the REQUEST/SAT LINK indication.	On the TEST page: The REQUEST indication goes out of view The IN PROGRESS indication comes into view At the end of the test, the OK indication comes into view.
7.On MCDU1: Push the line key adjacent to the RETURN indication until the ATSU DATALINK page comes into view.
8.On MCDU1: Push the MCDU MENU key.	On the MCDU1: The MCDU MENU page comes into view.

5. Close-up
Subtask 46-21-00-860-096-C ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On MCDU1, fully decrease the brightness of the MCDU screen (display off).
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

Subtask 46-21-00-862-069-C ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.02 06:50:19 UTC