TSM Lavatory Smoke Detection Failed A320

1.  Possible Causes:

-DIR-CIDS, 1 (101RH)

-DIR-CIDS, 2 (102RH)

-wiring

2.  Job Set-up Information

A.           Referenced Information

REFERENCE	DESIGNATION
Ref. AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
Ref. ASM 23-73-01
Ref. AMM 23-73-34-000-001	Removal of the Cabin Intercommunication Data System (CIDS) Director
Ref. AMM 23-73-34-400-001	Installation of the Cabin Intercommunication Data System (CIDS) Director

3. Fault Confirmation

SUBTASK 26-17-00-710-094-A

A.           Test

(1)          Do the CIDS Interface and Power-Up Test via the CFDS Ref. AMM 23-73-00-740-005.

4. Fault Isolation

SUBTASK 26-17-00-810-130-A

A.           If the test gives a different maintenance message:

—              Do the trouble shooting procedure related to the maintenance message.

SUBTASK 26-17-00-810-131-A

B.            If the test gives the maintenance message

CIDS(102RH)-SDF2 BUS / CIDS(101RH)-SDF1 or CIDS(101RH)-SDF1 BUS / CIDS(102RH)-SDF2 or NO LAV DATA/CIDS(101RH)-SDF1 BUS/CIDS(102RH)-SDF2 or NO LAV DATA/CIDS(102RH)-SDF2 BUS/CIDS(101RH)-SDF1:

(1)          Replace the DIR-CIDS, 1 (101RH) Ref. AMM 23-73-34-000-001 and Ref. AMM 23-73-34-400-001.

(2)          If the fault continues:

—              Replace the DIR-CIDS, 2 (102RH) Ref. AMM 23-73-34-000-001 and Ref. AMM 23-73-34-400-001.

(3)          If the fault continues:

—              Do a check and repair the wiring between the CIDS-SDF1 (AA15C and AA15H) and CIDS-SDF2 (AA11J and AA11K) Ref. ASM 23-73-01.

(4)          If the fault continues:

—              Do a check and repair the wiring between the CIDS-DIR1 (AA13A and AA13B) and CIDS-DIR2 (AA13E and AA13F) Ref. ASM 23-73-01.

SUBTASK 26-17-00-710-095-A

C.            Do the test as given in the Para. 3.

5. Close-up

SUBTASK 26-17-00-860-071-A

A.           Put the aircraft back to its initial configuration.