Removal of the Centralized Fault Display Interface Unit (CFDIU)

TASK 31-32-34-000-001-A
Removal of the Centralized Fault Display Interface Unit (CFDIU)

ZONE: 127
FIN: 1TW

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
Centralized Fault Display Interface Unit (CFDIU)

3. Job Set-up
Subtask 31-32-34-865-050-A

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	CFDS/CFDIU/BACK/UP	8TW	J17
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J41
121VU	CFDS/CFDIU/BACK/UP	8TW	J40

Subtask 31-32-34-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at access door 824.
(2) Open access door 824 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 31-32-34-020-050-A

A. Removal of the CFDIU
(1) Loosen the nuts (4) on the front of the rack (3).
(2) Lower the nuts (4).
(3) Pull the CFDIU (1) on its rack (3) to disconnect the electrical connectors (2).
(4) Remove the CFDIU (1) from its rack (3).
(5) Put CAP - BLANKING on the electrical connectors (2).

[Rev.10 from 2021] 2026.04.01 00:34:07 UTC