BITE Test of the SATCOM system

TASK 23-28-00-740-001-A
BITE Test of the SATCOM system

WARNING: MAKE SURE THAT ALL PERSONS STAY AWAY FROM THE SATCOM ANTENNAS (MORE THAN 7 METERS) WHEN YOU DO THIS TEST. THE SATCOM ANTENNAS USE HIGH POWER WHEN THEY TRANSMIT AND CAN CAUSE INJURY TO PERSONS.

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 31-32-00-860-003-A	Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page
TASK 34-10-00-860-002-A	ADIRS Start Procedure

3. Job Set-up
Subtask 23-28-00-860-061-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the Air Data/Inertial Reference System (ADIRS) start procedure (Ref. AMM TASK 34-10-00-860-002).

Subtask 23-28-00-860-062-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
Get access to the "SYSTEM REPORT/TEST/COM" page (Ref. AMM TASK 31-32-00-860-003).

4. Procedure
Subtask 23-28-00-740-050-E ** ON A/C NOT FOR ALL

A. BITE Test of the SATCOM System

NOTE: The actions and the results of this procedure occur on the Multipurpose Control & Display Unit (MCDU) that you use.

ACTION	RESULT
1.On the MCDU, on the "MCDU MENU" page: Push the line select key adjacent to the "SAT" indication.	On the MCDU: The "SATCOM MAIN MENU" page comes into view.
2.On the "SATCOM MAIN MENU" page: Push the line select key adjacent to the "SATCOM STATUS" indication.	The "SATCOM STATUS" page comes into view.
3.On the "SATCOM STATUS" page: Push the line select key adjacent to the "BITE" indication.	The "SATCOM BITE STATUS" page comes into view. The "SDU OK" indication comes into view. The "SIM CARDS OK" indication comes into view. The "SCM OK" indication comes into view. The "SYS BUS OK" indication comes into view.

5. Close-up
Subtask 23-28-00-860-063-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the "RETURN" indication until the "SYSTEM REPORT/TEST" page comes into view.
(2) Fully decrease the brightness of the MCDU screen (display off).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 04:04:21 UTC