No data from neither SDF channel

TASK 26-16-00-810-829-A
No data from neither SDF channel

1. Possible Causes

DIR-CIDS, 2 [102RH]
wiring
connector AA
DIR-CIDS, 1 [101RH]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 237301
AMM 23-73-34-000-001	Removal of the CIDS Director
AMM 23-73-34-400-001	Installation of the CIDS Director
AMM 26-10-00-740-801	BITE Test of the Smoke Detection Function - System Test

3. Fault Confirmation
Subtask 26-16-00-710-103-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the BITE the test of the smoke detection function - system test AMM 26-10-00-740-801.

4. Fault Isolation
Subtask 26-16-00-810-127-A ** ON A/C NOT FOR ALL

A. If the test gives a different maintenance message:

Do the trouble shooting procedure related to the maintenance message.

Subtask 26-16-00-810-128-A ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message
CIDS(102RH)-SDF2 BUS/ CIDS(101RH)-SDF1 or SDF1(101RH)-DIR2(102RH):
(1) Replace DIR-CIDS, 2 [102RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
(2) If the fault continues:

Do a check and repair the wiring between connector AA of DIR-CIDS, 1 [101RH] pin 11J and 11K to connector AA of DIR-CIDS, 2 [102RH] pin 15C and 15H ASM 237301.

Subtask 26-16-00-810-129-A ** ON A/C NOT FOR ALL

C. If the test gives the maintenance message
CIDS(101RH)-SDF1 BUS/ CIDS(102RH)-SDF2 or SDF2(102RH)-DIR1(101RH):
(1) Replace DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
(2) If the fault continues:

Do a check and repair the wiring between connector AA of DIR-CIDS, 2 [102RH] pin 11J and 11K to connector AA of DIR-CIDS, 1 [101RH] pin 15C and 15H ASM 237301.

Subtask 26-16-00-710-104-A ** ON A/C NOT FOR ALL

D. Do the test given in Para. 3.

5. Close-up
Subtask 26-16-00-860-077-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

[Rev.8 from Aug 2018] 2026.04.04 04:27:19 UTC