Removal of the Cabin Intercommunication Data System (CIDS) Director

TASK 23-73-34-000-001-B
Removal 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	CAP - BLANKING
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 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
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 31-32-00-860-003-A	Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
CIDS Director

3. Job Set-up
Subtask 23-73-34-861-053-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 23-73-34-970-051-A ** ON A/C NOT FOR ALL

B. Printing of the Trouble Shooting Data
(1) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(2) If available, print the TROUBLE SHOOTING DATA page as follows:

Get access to the SYSTEM REPORT/TEST COM page (Ref. AMM TASK 31-32-00-860-003).
On this page, push the line key adjacent to the CIDS1(2) indication.
On the CIDS1(2) page, push the line key adjacent to the TROUBLE SHOOTING DATA indication to get access to the TROUBLE SHOOTING DATA page.
Print the TROUBLE SHOOTING DATA page.

Subtask 23-73-34-865-062-A ** ON A/C NOT FOR ALL

C. Open, safety and tag 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
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR1 ESS	15WH	C05
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR1 ESS	150RH	G01
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR1 NORM	151RH	M05
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/1	17WH	T17
** ON A/C NOT FOR ALL
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR2 ESS	18WH	C06
** ON A/C NOT FOR ALL
49VU	COM DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM NAV/CIDS/DIR2 ESS	157RH	G02
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M07
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR2 NORM	156RH	M06
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/2	14WH	T18

Subtask 23-73-34-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at zone 128.
(2) Open access door 824 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 23-73-34-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the CIDS Director
(1) Loosen the nuts (3).
(2) Lower the nuts (3).
(3) Pull the CIDS director (5) on its rack (2) to disconnect the electrical connectors (1).
(4) Remove the CIDS director (5) from its rack (2).
(5) Put a CAP - BLANKING on the disconnected electrical connectors (1).
(6) If you send the aircraft to service with only one CIDS director:
(a) On the rack of the removed CIDS director 1(2), make marks on the ventilation holes on which no plugs were installed to record their location.

NOTE: This is important for the subsequent installation procedure.

1 If necessary, install the plugs on the ventilation holes.
2 If necessary, remove the plugs from ventilation holes 1 and 9.

[Rev.10 from 2021] 2026.03.31 23:18:14 UTC