Reactivation of the Smoke-Detection Control Unit (SDCU)

TASK 26-17-00-440-802-A
Reactivation of the Smoke-Detection Control Unit (SDCU)

1. Reason for the Job
MMEL 26-17-02A
SMOKE DETECTION CONTROL UNIT (SDCU) (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	LABEL - INOPERATIVE DO NOT ENTER

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power

3. Job Set-up
Subtask 26-17-00-861-059-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

4. Procedure
Subtask 26-17-00-440-051-A ** ON A/C NOT FOR ALL

A. Reactivation
(1) Do the trouble shooting of the SDCU with the Fault Symptoms as entry into the TSM.
(2) Remove the placard LABEL - INOPERATIVE DO NOT ENTER from the related lavatory door.
(3) Unlock the related lavatory door.
(4) Remove the WARNING NOTICE(S).

5. Close-up
Subtask 26-17-00-862-060-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:44:03 UTC