EVAC - No function of the EVAC indication on 2064VU panel

TASK 23-73-00-810-904-A
EVAC - No function of the EVAC indication on 2064VU panel

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 23-73-00-810-861-A	CIDS - Fault in all CIDS-related cabin functions
AMM 23-73-00-740-005	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
ASM 237310
AMM 23-73-47-000-001	Removal of the Decoder/Encoder Unit B (300RH)
AMM 23-73-47-400-001	Installation of the Decoder/Encoder Unit B (300RH)

3. Fault Confirmation
Subtask 23-73-00-710-297-B ** ON A/C NOT FOR ALL

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

4. Fault Isolation
Subtask 23-73-00-810-613-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 23-73-00-810-617-B ** ON A/C NOT FOR ALL

B. If the EVAC indication on one 2064VU panel does not come on:

(1) If there are approx. 28V DC:

(2) If there not are approx. 28V DC:

do a check for approx. 28V DC at the related DEU-B, connector C pin 22.
ASM 237310

(a) If there are approx. 28V DC:

(b) If there are not approx. 28V DC:

do a check and repair the wiring between:
the related DEU-B, connector C pin 22 and the related 2064VU panel, pin 3.
ASM 237310

do a check of the wiring between:
the related DEU-B connector C pin 20 and the related 2064VU panel, pin 2.
ASM 237310

Subtask 23-73-00-810-618-A ** ON A/C NOT FOR ALL

C. If the EVAC indication on all 2064VU panels do not come on:

Subtask 23-73-00-710-301-A ** ON A/C NOT FOR ALL

D. Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:25:56 UTC