CIDS 1 receives no Data from ACSC2

TASK 21-61-00-810-922-A
CIDS 1 receives no Data from ACSC2

1. Possible Causes

wiring
DIR-CIDS, 1 [101RH]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-63-00-710-004	Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
ASM 216301
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
AMM 23-73-34-000-001	Removal of the CIDS Director
AMM 23-73-34-400-001	Installation of the CIDS Director

3. Fault Confirmation
Subtask 21-61-00-710-218-A ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 21-61-00-810-264-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 21-61-00-810-265-A ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message ACSC2(57HH)/SDAC2(1WV2)/ DIR1(101RH):

do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.

(1) If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
(2) If the fault continues:
(a) Do a check and repair if necessary the connector pin at the connector 57HH/BE for the CIDS option.

Pin BE3 to ground.

(3) If the fault continues:

do a check of the wiring from:
ASM 216301 the ACSC2 (57HH/AA) pin 1D to the DIR-CIDS, 1 (101RH/AA) pin 6A,
the ACSC2 (57HH/AA) pin 1E to the DIR-CIDS, 1 (101RH/AA) pin 6B.

(4) If the fault continues:
Replace the DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.

Subtask 21-61-00-710-219-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2018] 2026.04.04 04:25:00 UTC