DOC AIRBUS | AMM A320FSystem Test of the Flight Operations and MAintenance eXchanger (FOMAX)
TASK 46-26-32-740-801-A
System Test of the Flight Operations and MAintenance eXchanger (FOMAX)
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 46-26-32-860-102-A ** ON A/C NOT FOR ALL
Subtask 46-26-32-740-050-A ** ON A/C NOT FOR ALL
Subtask 46-26-32-860-103-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:26:09 UTC
System Test of the Flight Operations and MAintenance eXchanger (FOMAX)
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.
ZONE: 210
1. Reason for the JobSelf 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 |
| 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 31-32-00-860-001-A | Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page |
Subtask 46-26-32-860-102-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) In the cockpit, on the Multipurpose Control and Display Unit (MCDU), turn the BRT knob to ON.
(3) On the MCDU, get the SYSTEM REPORT/TEST menu page (Ref. AMM TASK 31-32-00-860-001).
Subtask 46-26-32-865-083-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) In the cockpit, on the Multipurpose Control and Display Unit (MCDU), turn the BRT knob to ON.
(3) On the MCDU, get the SYSTEM REPORT/TEST menu page (Ref. AMM TASK 31-32-00-860-001).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FOMAX | 67TA | J01 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FOMAX | 67TA | R12 |
Subtask 46-26-32-740-050-A ** ON A/C NOT FOR ALL
A. System Test of the FOMAX
If a fault message comes into view during the procedure, record the message and do the related troubleshooting procedure.
5. Close-upIf a fault message comes into view during the procedure, record the message and do the related troubleshooting procedure.
| Action | Result |
| 1.On the MCDU, on the SYSTEM REPORT/TEST page: | On the MCDU: |
| - Push the line selection key adjacent to the FOMAX indication. | - The FOMAX page comes into view. |
| 2.On the FOMAX page: | |
| - Push the line selection key adjacent to the TEST indication. | - The FOMAX SYSTEM TEST page comes into view with indication TEST IN PROGRESS 5S. At the end of the test:
|
| 3.On the MCDU, push the line selection key adjacent to the RETURN indication. | The test procedure stops. |
Subtask 46-26-32-860-103-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line selection key adjacent to the RETURN indication until the MCDU MENU page comes into view.
(2) Set the MCDU BRT knob to OFF.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) On the MCDU, push the line selection key adjacent to the RETURN indication until the MCDU MENU page comes into view.
(2) Set the MCDU BRT knob to OFF.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).