Installation of the Cabin Intercommunication Data System (CIDS) Director

TASK 23-73-34-400-001-C
Installation of the Cabin Intercommunication Data System (CIDS) Director

ZONE: 127
ZONE: 128
FIN: 101RH ** ON A/C NOT FOR ALL
FIN: 102RH ** 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)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-740-003-A	BITE-Test of the Cabin Intercommunication Data System (CIDS) through the PTP
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
CIDS Director

3. Job Set-up
Subtask 23-73-34-860-059-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002)

Subtask 23-73-34-865-066-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
FOR FIN: 101RH (DIRCIDS, 1)
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05

Subtask 23-73-34-010-055-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position at access door 824 in zone 128.
(2) Make sure that access door 824 is open.

4. Procedure
Subtask 23-73-34-420-058-A ** ON A/C NOT FOR ALL

A. Installation of the CIDS Director 1

NOTE: The installation procedure of the CIDS director 1 is different from the installation procedure of the CIDS director 2.

(1) Prepare CIDS director 1
(a) If the aircraft operated with only the CIDS director 1, remove the plug(s) from the ventilation holes that have marks.
(b) Clean the component interfaces and the adjacent area.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Remove the blanking cap from each electrical connector (1).
(e) Make sure that the electrical connectors (1) are clean and in the correct condition.
(2) Install the CIDS director 1 (5) on its rack (2).
(3) Push the CIDS director 1 (5) on its rack (2) to connect the electrical connectors (1).
(4) Engage the nuts (3) on the lugs (4) and tighten them.
(5) Refer to Para. 4.C. of this procedure.

Subtask 23-73-34-420-059-A ** ON A/C NOT FOR ALL

B. Installation of the CIDS Director 2

NOTE: The installation procedure of the CIDS director 2 is different from the installation procedure of the CIDS director 1.

(1) Prepare CIDS director 2:
(a) Clean the component interfaces and the adjacent area.
(b) Do an inspection of the component interfaces and the adjacent area.
(c) Remove the blanking cap from each electrical connector (1).
(d) Make sure that the electrical connectors (1) are clean and in the correct condition.
(2) Install the CIDS director 2 (5) on its rack (2).
(3) Push the CIDS director 2 (5) on its rack (2) to connect the electrical connectors (1).
(4) Engage the nuts (3) on the lugs (4) and tighten them.

Subtask 23-73-34-865-067-A ** ON A/C NOT FOR ALL

C. 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
FOR FIN: 101RH (DIRCIDS, 1)
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06

Subtask 23-73-34-865-068-A ** ON A/C NOT FOR ALL

CAUTION: DO NOT OPEN THE CIRCUIT BREAKER OF THE CIDS DIRECTOR 2 BEFORE A MINIMUM OF THREE MINUTES AFTER YOU CLOSE THIS CIRCUIT BREAKER.

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06

Subtask 23-73-34-420-060-A ** ON A/C NOT FOR ALL

E. Installation of the CIDS Director 1
(1) FOR [102RH] (DIR-CIDS, 2)
Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking cap from each electrical connector (1).
(4) Make sure that the electrical connectors (1) are clean and in the correct condition.
(5) Install the CIDS director 1 (5) on its rack (2).
(6) Push the CIDS director 1 (5) on its rack (2) to connect the electrical connectors (1).
(7) Engage the nuts (3) on the lugs (4) and tighten them.

Subtask 23-73-34-865-069-A ** ON A/C NOT FOR ALL

F. 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
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
49VU	COM/CIDS/DIR ESS/1	150RH	G01
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05

Subtask 23-73-34-740-054-A ** ON A/C NOT FOR ALL

G. Do the BITE test of the Cabin Intercommunication Data System (CIDS) (Ref. AMM TASK 23-73-00-740-003).

5. Close-up
Subtask 23-73-34-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

Subtask 23-73-34-862-053-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:18:18 UTC