DOC AIRBUS | AMM A320FCheck and Uploading of the Engine Interface Unit (EIU) Software [CFML]
TASK 73-25-34-860-808-A
Check and Uploading of the Engine Interface Unit (EIU) Software
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 73-25-34-941-053-A
4. Procedure
Subtask 73-25-34-860-112-A
Subtask 73-25-34-865-115-A
Subtask 73-25-34-865-116-A
[Rev.10 from 2021]
2026.04.01 03:05:50 UTC
Check and Uploading of the Engine Interface Unit (EIU) Software
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| 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 31-32-00-860-012-A | Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page |
| TASK 31-38-00-610-804-A | Onboard Software Uploading Procedure |
| TASK 73-25-34-710-805-A | Operational Test of the Engine Interface Unit (with CFDS) |
| TASK 73-25-34-860-813-A | Check the Engine Interface Unit (EIU) Internal Memory |
Subtask 73-25-34-941-053-A
A. Aircraft Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position.
Subtask 73-25-34-865-110-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position.
B. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 73-25-34-865-096-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 121VU | PDL/PWR/SPLY | 14TD | J45 |
| 121VU | DLS&/DLRB/SPLY | 5TD | J38 |
| 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 |
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 73-25-34-865-109-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | ANTI ICE/PROBES/AOA/1 | 4DA1 | D04 |
| 49VU | ANTI ICE/PROBES/PITOT/1 | 3DA1 | D02 |
| 49VU | ANTI ICE/RAIN/RPLNT/CAPT | 1DB1 | D01 |
| 121VU | RCDR/DFDR | 7TU | K39 |
| 122VU | ANTI ICE/WINDOWS/R | 4DG2 | W14 |
| 122VU | ANTI ICE/RAIN/RPLNT/F/O | 1DB2 | W11 |
| 122VU | ANTI ICE/WINDOWS/L | 4DG1 | X14 |
| 122VU | ANTI ICE/PROBES/2/TAT | 1DA2 | Y15 |
| 122VU | ANTI ICE/PROBES/2/PITOT | 3DA2 | Y14 |
| 122VU | ANTI ICE/PROBES/2/AOA | 4DA2 | Y13 |
| 122VU | ANTI ICE/PROBES/2/STATIC | 5DA2 | Y11 |
| 122VU | ANTI ICE/PROBES/3/PITOT | 3DA3 | Z16 |
| 122VU | ANTI ICE/PROBES/3/AOA | 4DA3 | Z15 |
| 122VU | ANTI ICE/PROBES/3/STATIC | 5DA3 | Z14 |
| 122VU | ANTI ICE/PROBES/1/STATIC | 5DA1 | Z13 |
| 122VU | ANTI ICE/PROBES/1/TAT | 1DA1 | Z12 |
WARNING:
MAKE SURE THAT THE PROBE HEATER CIRCUIT-BREAKERS ARE OPEN BEFORE YOU OPEN THE PHC CIRCUIT BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:
D. Open, safety and tag this(these) circuit breaker(s):- THE PROBES WILL BECOME TOO HOT.
- THIS CAN CAUSE INJURY TO MAINTENANCE PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | ANTI ICE/PROBES/PHC/1 | 2DA1 | D03 |
| 122VU | ANTI ICE/PROBES/PHC/3 | 2DA3 | Y16 |
| 122VU | ANTI ICE/PROBES/PHC/2 | 2DA2 | Y12 |
Subtask 73-25-34-860-112-A
A. Check of the Part Number of the Operational Software Uploaded to the
EIU1(2).
(1) On the left or right MCDU, get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).
(2) Push the line key adjacent to the ENG indication.
(3) Push the line key adjacent to the EIU1(2) indication.
(4) Push the line key adjacent to the LRU IDENTIFICATION indication.
(a) The LRU IDENTIFICATION page comes into view.
(b) The P/N given on this page is the operational software P/N.
1 If the EIU operational software P/N is in line with the expected aircraft configuration, check the EIU internal configuration (Ref. AMM TASK 73-25-34-860-813).
2 If the EIU operational software P/N is not in line with the expected aircraft configuration, go to Paragraph 4.B.
Subtask 73-25-34-860-113-A EIU1(2).
(1) On the left or right MCDU, get the SYSTEM REPORT/TEST/ENG page (Ref. AMM TASK 31-32-00-860-012).
(2) Push the line key adjacent to the ENG indication.
(3) Push the line key adjacent to the EIU1(2) indication.
(4) Push the line key adjacent to the LRU IDENTIFICATION indication.
(a) The LRU IDENTIFICATION page comes into view.
(b) The P/N given on this page is the operational software P/N.
1 If the EIU operational software P/N is in line with the expected aircraft configuration, check the EIU internal configuration (Ref. AMM TASK 73-25-34-860-813).
2 If the EIU operational software P/N is not in line with the expected aircraft configuration, go to Paragraph 4.B.
B. Do the uploading of the operational software to the
EIU.
(1) Prepare to upload:
(a) Obtain the Media Disk for the EIU from the storage box in the cockpit.
(b) Verify that the Media Disk corresponds to the aircraft configuration (according the airline configuration management).
(d) Push the FADEC GND PWR/1(2) pushbutton switch
(3) After the uploading, do a long power cut on EIU (>10 seconds).
(a) Open the circuit breakers that follow:
(c) Close the circuit breakers that follow:
(a) Repeat Paragraph 4.A.
(5) Check the EIU internal configuration (Ref. AMM TASK 73-25-34-860-813).
5. Close-upEIU.
(1) Prepare to upload:
(a) Obtain the Media Disk for the EIU from the storage box in the cockpit.
(b) Verify that the Media Disk corresponds to the aircraft configuration (according the airline configuration management).
NOTE: If the Media disk is not available, contact your airline engineering department to obtain the correct P/N applicable to the aircraft.
(c) Make sure that the aircraft is not positioned on jacks. (d) Push the FADEC GND PWR/1(2) pushbutton switch
- The ON legend comes on.
(3) After the uploading, do a long power cut on EIU (>10 seconds).
(a) Open the circuit breakers that follow:
- For Eng 1: 2KS1 and 4KS1. Refer to Paragraph 3.B. for their location
- for Eng 2: 2KS2 and 4KS2. Refer to Paragraph 3.B. for their location.
(c) Close the circuit breakers that follow:
- For Eng 1: 2KS1 and 4KS1. Refer to Paragraph 3.B. for their location
- for Eng 2: 2KS2 and 4KS2. Refer to Paragraph 3.B. for their location.
(a) Repeat Paragraph 4.A.
(5) Check the EIU internal configuration (Ref. AMM TASK 73-25-34-860-813).
Subtask 73-25-34-865-115-A
WARNING:
CLOSE THE PHC CIRCUIT BREAKERS BEFORE YOU CLOSE THE PROBE HEATER CIRCUIT-BREAKERS.
IF YOU DO NOT OBEY THIS SEQUENCE, THE PROBES WILL BECOME TOO HOT. THIS CAN CAUSE INJURY TO MAINTENANCE PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | ANTI ICE/PROBES/PHC/1 | 2DA1 | D03 |
| 122VU | ANTI ICE/PROBES/PHC/3 | 2DA3 | Y16 |
| 122VU | ANTI ICE/PROBES/PHC/2 | 2DA2 | Y12 |
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 73-25-34-942-057-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | ANTI ICE/PROBES/AOA/1 | 4DA1 | D04 |
| 49VU | ANTI ICE/PROBES/PITOT/1 | 3DA1 | D02 |
| 49VU | ANTI ICE/RAIN/RPLNT/CAPT | 1DB1 | D01 |
| 121VU | RCDR/DFDR | 7TU | K39 |
| 122VU | ANTI ICE/WINDOWS/R | 4DG2 | W14 |
| 122VU | ANTI ICE/RAIN/RPLNT/F/O | 1DB2 | W11 |
| 122VU | ANTI ICE/WINDOWS/L | 4DG1 | X14 |
| 122VU | ANTI ICE/PROBES/2/TAT | 1DA2 | Y15 |
| 122VU | ANTI ICE/PROBES/2/PITOT | 3DA2 | Y14 |
| 122VU | ANTI ICE/PROBES/2/AOA | 4DA2 | Y13 |
| 122VU | ANTI ICE/PROBES/2/STATIC | 5DA2 | Y11 |
| 122VU | ANTI ICE/PROBES/3/PITOT | 3DA3 | Z16 |
| 122VU | ANTI ICE/PROBES/3/AOA | 4DA3 | Z15 |
| 122VU | ANTI ICE/PROBES/3/STATIC | 5DA3 | Z14 |
| 122VU | ANTI ICE/PROBES/1/STATIC | 5DA1 | Z13 |
| 122VU | ANTI ICE/PROBES/1/TAT | 1DA1 | Z12 |
C. Put the aircraft back to its initial configuration.
(1) Put the Media disk back in the stowage box.
(3) On the ENG section of maintenance panel 50VU:
(1) Put the Media disk back in the stowage box.
CAUTION:
MAKE SURE THAT THE SOFTWARE INSTALLED AGREES WITH THE AIRLINE CONFIGURATION MANAGEMENT DOCUMENT. THE SYSTEM OPERATIONAL TEST OR BITE TEST DOES NOT DETECT INCORRECT SOFTWARE CONFIGURATION.
(2) Do the operational test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS) (Ref. AMM TASK 73-25-34-710-805). (3) On the ENG section of maintenance panel 50VU:
- Push the FADEC GND PWR/1(2) pushbutton switch (the ON legend goes off).