Read-out of the Smoke-Detection Control-Unit (SDCU) BITE for Channel 1 and Channel 2

TASK 26-17-00-740-802-A
Read-out of the Smoke-Detection Control-Unit (SDCU) BITE for Channel 1 and Channel 2

ZONE: 210

1. Reason for the Job
Trouble Shooting of the Smoke Detection System
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 31-32-00-860-005-A	Procedure to Get Access to the SYSTEM REPORT/TEST FIRE PROT Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 26-17-00-860-056-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 EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(3) Do the procedure to get access to the SYSTEM REPORT/TEST FIRE PROT SDCU page
(Ref. AMM TASK 31-32-00-860-005).

Subtask 26-17-00-865-061-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	AIR COND/SDCU/CHAN1	11WQ	C06
122VU	AIR COND/SDCU/CHAN2	12WQ	T18

4. Procedure
Subtask 26-17-00-740-051-A ** ON A/C NOT FOR ALL

A. Read-out of the SDCU BITE for Channel 1 and Channel 2

ACTION	RESULT
1.On the Multipurpose Control and Display Unit (MCDU):	On the MCDU: The SDCU main menu comes on.
Push the line key adjacent to the LAST LEG REPORT indication.	The LAST LEG REPORT page comes on.
2.On the MCDU: Push the line key adjacent to the PRINT indication.	At the printer: The printer prints the last leg report.
3.At the printer: Remove the printed report.
4.On the MCDU: Push the line key adjacent to the RETURN indication.	On the MCDU: The SDCU page comes on.
5.On the MCDU: Push the line key adjacent to the PREVIOUS LEGS REPORT indication.	On the MCDU: The PREVIOUS LEGS REPORT page comes on.
6.On the MCDU: Push the line key adjacent to the PRINT indication.	At the printer: The printer prints the previous legs report.
7.At the printer: Remove the printed report.
8.On the MCDU: Push the line key adjacent to the RETURN indication.	On the MCDU: The SDCU page comes on.
9.On the MCDU: Push the line key adjacent to the LRU IDENT indication.	On the MCDU: The LRU IDENT page comes on.
10.On the MCDU: Push the line key adjacent to the PRINT indication.	At the printer: The printer prints the LRU identification report.
11.At the printer: Remove the printed report.
12.On the MCDU: Push the line key adjacent to the RETURN indication.	On the MCDU: The SDCU page comes on.
13.On the MCDU: Push the line key adjacent to the WIRING REPORT indication.	On the MCDU: The WIRING REPORT page comes on.
14.On the MCDU: Push the line key adjacent to the PRINT indication.	At the printer: The printer prints the wiring report.
15.At the printer: Remove the printed report.
16.On the MCDU: Push the line key adjacent to the RETURN indication.	On the MCDU: The SDCU page comes on.

5. Close-up
Subtask 26-17-00-860-057-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Put the aircraft back to its initial configuration.
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:44:08 UTC