Removal of the FDIU/DMU (FDIMU)

TASK 31-36-34-000-002-A
Removal of the FDIU/DMU (FDIMU)

ZONE: 127
FIN: 10TV ** ON A/C NOT FOR ALL

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 31-36-00-000-001-A	Removal of the Personal Computer Memory Card (PCMCIA) of the FDIMU/DMU
TASK 31-36-00-740-015-A	Printout of the Engine/APU Hours and Cycles Stored in the Flight Data Interface and Management Unit (FDIMU)
Flight Data Interface Management Unit (FDIMU)

3. Job Set-up
Subtask 31-36-34-740-060-A ** ON A/C NOT FOR ALL

A. Print out the Engine/APU hours and cycles (Ref. AMM TASK 31-36-00-740-015) stored in the FDIMU.

Subtask 31-36-34-865-058-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	AIDS & RCDR/FDIMU	5TV	K15
** ON A/C NOT FOR ALL
121VU	AIDS & RCDR/FDIMU	5TV	K38

Subtask 31-36-34-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 128, at the access door 824.
(2) Open the access door 824.
(3) If PCMCIA-Card(s) is(are) installed on the FDIMU, remove it(them) (Ref. AMM TASK 31-36-00-000-001).

Subtask 31-36-34-550-057-A ** ON A/C NOT FOR ALL

D. On the FDIMU front face, set the ON/OFF switch to OFF.
(1) To do so open the door, the one bearing the caution: "BEFORE INSTALLING SET INSIDE SWITCH TO ON". Push down the small handle and the door swivels open to show a hole in the upper part with a switch. Use one finger to set the switch to OFF.
(2) Swivel back the door to its closed position.

4. Procedure
Subtask 31-36-34-020-053-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 00:36:07 UTC