Installation of the ADIRS CDU

TASK 34-12-12-400-001-A
Installation of the ADIRS CDU

ZONE: 210
FIN: 2FP ** 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	AR	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 34-10-00-710-001-A	Check of the ADIRS CDU Brightness and Display
ADIRS - Control and Display Unit (CDU)

3. Job Set-up
Subtask 34-12-12-010-051-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at the access door 822.
(2) Make sure that the access door 822 is open.
(3) Make sure that the protective cover is removed from the battery power center 105VU.

Subtask 34-12-12-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
105VU	ADIRS/ADIRU1/28VDC	6FP1	C02
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	ADIRS/ADIRU/2/28VDC	6FP2	N04
121VU	ADIRS/ADIRU/3/28VDC	6FP3	N03
122VU	LIGHTING/TST/BOARD/SPLY	30LP	X06
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04
122VU	LIGHTING/INSTL LT/OVHD/PNL	3LF	Y03

4. Procedure
Subtask 34-12-12-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the ADIRS CDU (2FP)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking caps from the electrical connectors (2) and (3).
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the electrical connectors (2) to the related receptacles (3).
(6) Install the CDU (4) in its housing (1).
(7) Tighten the four quarter turn fasteners (5).

Subtask 34-12-12-865-052-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
105VU	ADIRS/ADIRU1/28VDC	6FP1	C02
121VU	ADIRS/ADIRU/2/115VAC	4FP2	N06
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	ADIRS/ADIRU/2/28VDC	6FP2	N04
121VU	ADIRS/ADIRU/3/28VDC	6FP3	N03
122VU	LIGHTING/TST/BOARD/SPLY	30LP	X06
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 2	27LP	X05
122VU	LIGHTING/ANN LT SPLY/XFMR/BUS 1	26LP	X04
122VU	LIGHTING/INSTL LT/OVHD/PNL	3LF	Y03

Subtask 34-12-12-710-050-A ** ON A/C NOT FOR ALL

C. Do the test of the ADIRS CDU brightness and display.
(Ref. AMM TASK 34-10-00-710-001)

5. Close-up
Subtask 34-12-12-860-050-A ** ON A/C NOT FOR ALL

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 34-12-12-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Tighten the two screws.
(3) Close the access door 822
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:23:05 UTC