Director 1 data transmission fault

TASK 23-73-00-810-896-A
Director 1 data transmission fault

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
ASM 237301
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 23-73-00-710-281-A ** ON A/C NOT FOR ALL

A. Do the CIDS BITE test through the CFDS AMM 23-73-00-740-005.

Subtask 23-73-00-710-281-B ** ON A/C NOT FOR ALL

A. Do the CIDS Interface and Power-Up Test through the CFDS AMM 23-73-00-740-005.

4. Fault Isolation
Subtask 23-73-00-810-595-A

A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.

Subtask 23-73-00-810-596-A ** ON A/C NOT FOR ALL

B. If the CIDS BITE test gives the maintenance message DIRECTOR:

(1) If the fault message DIRECTOR comes on:

(2) If no maintenance message comes on:

do a check and repair the wiring between the:
DIR-CIDS,1 connector AA/13A and DIR-CIDS,2 connector AA/13E,
DIR-CIDS,1 connector AA/13B and DIR-CIDS,2 connector AA/13F ASM 237301.

(a) If the fault continues:

Subtask 23-73-00-810-596-B ** ON A/C NOT FOR ALL

B. If the CIDS POWER-UP Test gives the maintenance message DIR1 (101RH):

(1) If the fault continues:

do a check and repair the wiring between the:
DIR-CIDS,1 connector AA/13A and DIR-CIDS,2 connector AA/13E,
DIR-CIDS,1 connector AA/13B and DIR-CIDS,2 connector AA/13F ASM 237301.

(a) If the fault continues:

Subtask 23-73-00-710-287-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:25:55 UTC