Update of the APU Hours and Cycles in the FDIMU after APU, ECB or FDIMU Replacement

TASK 31-36-00-740-013-A
Update of the APU Hours and Cycles in the FDIMU after APU, ECB or FDIMU Replacement

NOTE: Before you update the APU hours and cycles, it is necessary to energize the ECB (C/B pushed and ground power switched on).

ZONE: 120
ZONE: 210
FIN: 10TV ** ON A/C NOT FOR ALL

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

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
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 31-36-00-860-086-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) Make sure that the aircraft is in the Ground configuration (the landing gear is compressed and all the engines are stopped).
(3) On overhead panel 25VU, push the APU MASTER SW button (the blue light indicator ON comes on).

Subtask 31-36-00-865-089-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	AIDS/DMU	4TV	K15
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
** ON A/C NOT FOR ALL
121VU	AIDS & RCDR/FDIMU	5TV	K15
** ON A/C NOT FOR ALL
121VU	AIDS & RCDR/FDIMU	5TV	K38

4. Procedure
Subtask 31-36-00-740-072-A ** ON A/C NOT FOR ALL

A. Update of the APU Hours and Cycles into the FDIMU

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the MCDU MENU mode key.	The MCDU MENU page comes into view.
Push the line select key adjacent to the AIDS indication.	The AIDS page comes into view.
Push the line select key adjacent to the PROGRAMMING indication.	The AIDS DMU PROGRAMMING page comes into view.
Enter the level 2 password with alphanumeric keys into the scratchpad.	An asterisk for each entered character shows on the scratchpad.
Push the line select key adjacent to the ENTER PASSWORD indication.	The color of the ENTER PASSWORD indication changes from blue into white and the asterisk goes out of view.
Push the line select key adjacent to the PROGRAMMING MENUS indication.	The AIDS DMU PROGRAMMING page comes into view.
Push the line select key adjacent to the STATISTIC COUNTERS indication.	The AIDS STATISTIC COUNTERS page comes into view.
Enter the values for APU hours and APU cycles separated with a dash (e.g 00231/04389) with the alphanumeric keys into the scratchpad.	The entered numbers show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk below the AHRS ACYC indication (5R).	The new values takes over below the AHRS ACYC indication.
Push the line select key adjacent to the RETURN indication 3 times.	The AIDS page comes into view.
Push the MCDU mode key.	The MCDU MENU page comes into view.

Subtask 31-36-00-740-072-C ** ON A/C NOT FOR ALL

A. Update of the APU Hours and APU Cycles in the FDIMU

NOTE: There is an automatic update of the APU hours and APU cycles in the FDIMU for the installed APU. The replacement of the ECB has no effect on the offsets of the APU hours and cycles in the FDIMU which stay at the values stored in the FDIMU prior to ECB replacement.

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the MCDU MENU mode key.	The MCDU MENU page comes into view.
Push the line select key adjacent to the AIDS indication.	The AIDS page comes into view.
Push the line select key adjacent to the SPECIAL FUNCTION/ REPROGRAMMING indication.	The AIDS:SPECIAL FUNC/REPROG page comes into view.
Push the line select key adjacent to the STATISTIC COUNTER indication.	The AIDS ACCESS CONTROL page comes into view.
Enter the level 2 password with the alphanumeric keys into the scratchpad.	An asterisk for each entered character comes into view.
Push the line select key adjacent to the PASSWORD indication.	The AIDS:STATISTIC CNTR 1/2 page comes into view.
Use the alphanumeric keys to set the offset value of the APU to "0", if APU TSN is more than "0" and less or equal to "16383". Use the alphanumeric keys to set the offset value of the APU to "16384", if APU TSN is more than "16383" and less or equal to "32767". Use the alphanumeric keys to set the offset value of the APU to "32768", if APU TSN is more than "32767" and less or equal to "49151". Use the alphanumeric keys to set the offset value of the APU to "49152", if APU TSN is more than "49151" and less or equal to "65535". Use the alphanumeric keys to set the offset value of the APU to "65536", if APU TSN is more than "65535" and less or equal to "81919".	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU HRS OFFSET indication.	The new values come into view at the APU HRS ; OFFSET indication.
Push the arrow down mode key.	The AIDS:STATISTIC CNTR 2/2 page comes into view.
Use the alphanumeric keys to set the offset value of the APU to "0", if the APU CSN is more than "0" and less or equal to 16383. Use the alphanumeric keys to set the offset value of the APU to "16384", if APU CSN is more than "16383" and less or equal to "32767". Use the alphanumeric keys to set the offset value of the APU to "32768", if APU CSN is more than "32767" and less or equal to "49151". Use the alphanumeric keys to set the offset value of the APU to "49152", if APU CSN is more than "49151" and less or equal to "65535". Use the alphanumeric keys to set the offset value of the APU to "65536", if APU CSN is more than "65535" and less or equal to "81919".	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU CYC OFFSET indication.	The new values come into view at the APU CYC OFFSET indication.
Push the line select key adjacent to the RETURN indication 2 times.	The AIDS page comes into view.
Push the MCDU mode key.	The MCDU MENU page comes into view.

Subtask 31-36-00-740-072-D ** ON A/C NOT FOR ALL

A. Update of the APU Hours and Cycles in the FDIMU

NOTE: There is an automatic update of the APU hours and APU cycles in the FDIMU for the installed APU. The replacement of the APU and/or the ECB has no effect on the offsets of the APU hours and cycles in the FDIMU which stay at zero.
Make sure that the offsets of the APU hours and cycles in the FDIMU are zero after the replacement of the FDIMU.

(1) Update of the APU Hours and Cycles in the FDIMU (SAGEM PN ED48A100).

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the MCDU MENU mode key.	The MCDU MENU page comes into view.
Push the line select key adjacent to the AIDS indication.	The AIDS page comes into view.
Push the line select key adjacent to the PROGRAMMING indication.	The AIDS DMU PROGRAMMING page comes into view.
Enter the level 2 password with alphanumeric keys into the scratchpad.	An asterisk for each entered character shows on the scratchpad.
Push the line select key adjacent to the ENTER PASSWORD indication.	The color of the ENTER PASSWORD indication changes from blue into white and the asterisk goes out of view.
Push the line select key adjacent to the PROGRAMMING MENUS indication.	The AIDS DMU PROGRAMMING page comes into view.
Push the line select key adjacent to the STATISTIC COUNTERS indication.	The AIDS STATISTIC COUNTERS page comes into view.
If the values for the offset of the APU hours and APU cycles are not zero, set them to zero. Use the alphanumeric keys to do this and a dash for the separation (e.g 00000/00000).	The entered numbers show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk below the AHRS ACYC indication (5R).	The new values come into view below the AHRS ACYC indication.
Push the line select key adjacent to the RETURN indication 3 times.	The AIDS page comes into view.
Push the MCDU mode key.	The MCDU MENU page comes into view.

(2) Update of the APU Hours and Cycles in the FDIMU (TELEDYNE PN 2234320-01-01).

NOTE: This update is only applicable if you installed FDIMU PN 2234320-01-01 (refer to the IPC for the correct interchangeability).

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the MCDU MENU mode key.	The MCDU MENU page comes into view.
Push the line select key adjacent to the AIDS indication.	The AIDS page comes into view.
Push the line select key adjacent to the SPECIAL FUNCTION/ REPROGRAMMING indication.	The AIDS:SPECIAL FUNC/REPROG page comes into view.
Push the line select key adjacent to the STATISTIC COUNTER indication.	The AIDS ACCESS CONTROL page comes into view.
Enter the level 2 password with alphanumeric keys into the scratchpad.	An asterisk for each entered character shows on the scratchpad.
Push the line select key adjacent to the PASSWORD indication.	The AIDS:STATISTIC CNTR 1/2 page comes into view.
Enter the values for the APU hours offset with the alphanumeric keys into the scratchpad.	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU HRS OFFSET indication.	The new values transmit over to the APU HRS OFFSET indication.
Push the arrow down mode key.	The AIDS:STATISTIC CNTR 2/2 page comes into view.
Enter the values for the APU cycles offset with the alphanumeric keys into the scratchpad.	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU CYC OFFSET indication.	The new values transmit over to the APU CYC OFFSET indication.
Push the line select key adjacent to the RETURN indication 2 times.	The AIDS page comes into view.
Push the MCDU mode key.	The MCDU MENU page comes into view.

Subtask 31-36-00-740-072-H ** ON A/C NOT FOR ALL

A. Update of the APU Hours and APU Cycles in the FDIMU

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the MCDU MENU mode key.	The MCDU MENU page comes into view.
Push the line select key adjacent to the AIDS indication.	The AIDS page comes into view.
Push the line select key adjacent to the SPECIAL FUNCTION/ REPROGRAMMING indication.	The AIDS:SPECIAL FUNC/REPROG page comes into view.
Push the line select key adjacent to the STATISTIC COUNTER indication.	The AIDS ACCESS CONTROL page comes into view.
Enter the level 2 password with the alphanumeric keys into the scratchpad.	An asterisk for each entered character comes into view.
Push the line select key adjacent to the PASSWORD indication.	The AIDS:STATISTIC CNTR 1/2 page comes into view.
Use the alphanumeric keys to set the offset value of the APU to "16384".	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU HRS OFFSET indication.	The new values come into view at the APU HRS OFFSET indication.
Push the arrow down mode key.	The AIDS:STATISTIC CNTR 2/2 page comes into view.
Use the alphanumeric keys to set the offset value of the APU to "16384".	The numbers entered show on the scratchpad.
Push the line select key adjacent to the numbers and asterisk of the APU CYC OFFSET indication.	The new values come into view at the APU CYC OFFSET indication.
Push the line select key adjacent to the RETURN indication 2 times.	The AIDS page comes into view.
Push the MCDU mode key.	The MCDU MENU page comes into view.

5. Close-up
Subtask 31-36-00-860-087-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On overhead panel 25VU, push the APU MASTER SW button (the blue light indicator ON goes off).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:35:24 UTC